Cold box structure with exhaust device
By setting up an exhaust device with a gas collection bridge and a top flue in the cold box, the problem of flammable and toxic gas accumulation inside the cold box is solved, safe exhaust and real-time detection are achieved, explosion risk is reduced, and the cost is low.
Patent Information
- Application Number
- CN202422364297.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-09-27
AI Technical Summary
When handling flammable and toxic gases, existing cold box devices lack effective collection and discharge devices, resulting in gases aggregation inside the cold box and exploding risk.
An exhaust device with a gas collecting bridge tray, a support base, a bracket, a U-shaped fixed bracket and a flue is designed to collect gas through the exhaust flue inside the gas collecting bridge tray, and discharge the cold box through the top flue and chimney. It is equipped with H2, CO, and CH4 detectors for real-time monitoring.
It effectively prevents flammable and toxic gases from agglomerating inside the cold box, reduces the risk of explosion, and has a simple structure and low cost, and has real-time detection functions.
Smart Images
Figure CN223090920U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of cold box equipment, and particularly relates to a cold box structure with an exhaust device. Background Technique
[0002] During the working process of the cold box, the raw gas comes from the upstream MDEA decarbonization device, enters the mercury removal tower after water cooling, and then enters the same molecular sieve adsorption tower after pre-cooling water separation. In the molecular sieve adsorption tower, water, CO2 and organic amines are removed, and then enter the cold box system through a filter. The purified raw gas is cooled and condensed in the cold box system by a heat exchanger and then enters the hydrogen-rich gas flash tank. In the hydrogen-rich gas flash tank, it is reheated and then exits the boundary area. The liquid at the bottom of the hydrogen-rich gas flash tank is passed through multiple distillation towers to remove components such as H2 and N2, and some flammable and toxic gases such as H2, CO, and CH4 will inevitably be generated.
[0003] Therefore, there is an urgent need for a device that can collect these flammable and toxic gases and safely discharge them from the inside of the cold box. Content of the Utility Model
[0004] The purpose of the utility model is to solve the deficiencies in the prior art and provide a cold box structure with an exhaust device.
[0005] The specific technical solution adopted by the utility model is as follows:
[0006] A cold box structure with an exhaust device, characterized in that it includes a gas collecting bridge, a support base, a bracket, a U-shaped fixing bracket, an upper support frame and a flue arranged in the cold box; the gas collecting bridge is arranged from bottom to top in the cold box, and a through exhaust flue is formed inside the gas collecting bridge;
[0007] One end of the support base is fixed to the inner side of the cold box panel, and the support base extends obliquely upward; the bracket is arranged perpendicular to the cold box panel, one end of the bracket is fixed to the inner side of the cold box panel, and the other end is fixedly connected to the other end of the support base; the gas collecting bridge is arranged above the bracket; a number of gas collecting holes for gas collection are opened on the surface of the gas collecting bridge;
[0008] The top of the gas collecting bridge is fixed with a U-shaped fixing bracket, the U-shaped fixing bracket is arranged around the periphery of the gas collecting bridge, and both ends of the U-shaped fixing bracket are respectively fixedly connected to the cross beam on the inner side of the cold box panel through an upper support frame; there is a distance between the top of the gas collecting bridge and the top panel of the cold box to form a top flue, and the top flue receives the gas from the exhaust flue inside the gas collecting bridge; a steel wire mesh is arranged to connect the top flue with the cold box chimney to discharge the cold box.
[0009] Preferably, a first limiting member is welded and fixed to the end of the bracket away from the cold box panel to prevent the gas collecting bridge from moving outwards; the first limiting member is made of steel plate.
[0010] Preferably, a second limiting member is fixedly welded to the side of the gas collecting bridge frame close to the cold box panel, and the second limiting member is arranged along the width direction of the gas collecting bridge frame to prevent the gas collecting bridge frame from moving inward.
[0011] Preferably, the second limiting member is made of angle steel.
[0012] Preferably, both the upper support frame and the bracket are made of angle steel.
[0013] Preferably, a high-density fiberglass cloth is provided outside the gas collecting bridge frame to prevent the pearlite sand in the cold box from entering the exhaust flue.
[0014] Preferably, a high-density fiberglass cloth is fixed to the steel wire mesh through copper wires to prevent the pearlite sand in the cold box from being discharged from the cold box through the top flue.
[0015] Preferably, the steel wire mesh is fixed by a flat support frame and a support beam, specifically as follows: the flat support frame is arranged parallel to the top panel of the cold box, one end of the flat support frame is fixedly welded to the outside of the top of the gas collecting bridge frame, and the other end is fixedly welded to one end of the support beam; the support beam is vertically welded between the flat support frame and the top panel of the cold box; the steel wire mesh is respectively fixed to the side of the flat support frame and the support beam away from the top flue by spot welding.
[0016] Preferably, the included angle between the support base and the cold box panel is set to 30° - 60°.
[0017] Preferably, the top flue is communicated with the cold box chimney, and one or more of an H2 detector, a CO detector or a CH4 detector are installed in the chimney.
[0018] Compared with the prior art, the utility model has the following beneficial effects:
[0019] The utility model is provided with a top flue. Once leakage occurs, all flammable and toxic gases are discharged from the top of the cold box through the top flue, preventing explosion caused by accumulation inside the cold box. At the same time, an H2 / CO / CH4 detector is installed in the chimney. If leakage occurs, it can be detected and uploaded, effectively preventing explosion caused by the accumulation of flammable and toxic gases inside the cold box. And the production cost of the structure of the utility model is low. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a detail drawing of the lower end node of the gas collecting bridge frame;
[0021] Figure 2 It is a detail drawing of the upper end node of the gas collecting bridge frame;
[0022] Figure 3Connection diagram when there is only one support base;
[0023] Figure 4 Detail drawing of the fixed node of the U-shaped fixing bracket and the cross beam;
[0024] Figure 5 Schematic diagram of the position of the flue and the gas collecting bridge;
[0025] Figure 6 Structural diagram of the top flue;
[0026] In the figure: gas collecting bridge 1, gas collecting bridge hole 101, high-density fiberglass cloth 2, support base 3, bracket 4, U-shaped fixing bracket 5, upper support frame 6, top flue 7, flat support frame 71, support beam 72, wire mesh 73, first limiting member 8, second limiting member 9. Detailed implementation manners
[0027] To make the above objects, features and advantages of the present utility model more obvious and understandable, the following will describe in detail the specific implementation manners of the present utility model with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below. The technical features in the various embodiments of the present utility model can be combined correspondingly without conflict.
[0028] In the description of the present utility model, it should be understood that the terms "first" and "second" are only used for the purpose of distinguishing descriptions, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features.
[0029] As Figure 1 shown, as a preferred embodiment of the specific implementation manner of the present utility model, this embodiment provides a cold box structure with an exhaust device. This structure includes a gas collecting bridge 1, a support base 3, a bracket 4, a U-shaped fixing bracket 5, an upper support frame 6 and a flue 7 arranged in the cold box. The gas collecting bridge 1 is arranged from bottom to top in the cold box, and a through exhaust flue is formed inside the gas collecting bridge 1.
[0030] In this embodiment, there are two support bases 3. One end of the two support bases 3 is fixed to the inner side of the cold box panel, and the other end extends obliquely upward and is fixedly connected to one end of the bracket 4. To ensure stability, welding is usually used for fixation. The angle between the support base 3 and the cold box panel can be adjusted according to actual production requirements, and the adjustment range is generally 30° to 60°.
[0031] In the present utility model, the bracket 4 is arranged perpendicular to the cold box panel. One end of the bracket 4 is fixed to the inner side of the cold box panel, and the other end is fixedly connected to the other end of the support base 3. The bracket 4 generally uses angle steel, and the two support bases 3 are respectively welded and fixed to the horizontal side surfaces of the two brackets 4.
[0032] In the present utility model, a gas collecting bridge 1 is arranged above the bracket 4. Inside the gas collecting bridge 1, there is an exhaust flue communicating with the internal flue of the cold box, and a number of gas collecting bridge holes 101 for gas collection are opened on the surface. A high-density fiberglass cloth 2 is also provided on the outer side of the gas collecting bridge 1, mainly to prevent the pearlite sand in the cold box from entering the inside of the gas collecting bridge through the gas collecting bridge holes 101, thereby causing the blockage of the exhaust flue.
[0033] To prevent the gas collecting bridge 1 from moving inward and outward, a first limiting member 8 and a second limiting member 9 are also provided in this embodiment. Specifically, as Figure 2 shown, the gas collecting bridge 1 is placed in the bending groove of the bracket 4, and the vertical side surfaces of the two bending grooves respectively limit the movement of the gas collecting bridge 1 in the plane parallel to the cold box panel. A first limiting member 8 is welded to the other end of the bracket 4, that is, the end far from the cold box panel. Generally, a steel plate is used, and the wide surface of the steel plate is welded and fixed to the other end of the bracket 4, mainly to prevent the gas collecting bridge 1 from moving outward away from the cold box panel. On the side of the gas collecting bridge 1 opposite to the first limiting member 8, that is, on the side of the gas collecting bridge 1 close to the cold box panel, a second limiting member 9 is provided. The second limiting member 9 is welded and fixed to the bracket 4 along the width direction of the gas collecting bridge 1 to prevent the gas collecting bridge 1 from moving inward close to the cold box panel. To facilitate the implementation of the welding work on the bracket 4, the second limiting member 9 generally uses angle steel, and the angle steel side surface of the second limiting member 9 is horizontally placed and welded to the edge of the vertical surface of the angle steel of the bracket 4.
[0034] In the present utility model, as Figure 3 shown, a U-shaped fixing bracket 5 is fixed to the top end of the gas collecting bridge 1. The U-shaped fixing bracket 5 is arranged around the periphery of the gas collecting bridge 1, and the two ends of the U-shaped fixing bracket 5 are respectively fixedly connected to the cross beam on the inner side of the cold box panel through the upper end support frame 6. Specifically, as Figure 4 shown, the two cross beams are arranged perpendicular to the inner side of the cold box panel, and the two cross beams are connected by the vertically arranged upper end support frame 6. Generally, welding can be used for fixed connection. The U-shaped fixing bracket 5 is arranged around the periphery of the gas collecting bridge 1, and the pins on both sides of the U-shaped fixing bracket 5 are fixed to the upper end support frame 6 by welding.
[0035] As Figure 5As shown, there is a spacing between the top of the gas collecting bridge 1 and the top panel of the cold box to form the top flue 7. To prevent the toxic or flammable gases collected in the gas collecting bridge 1 from escaping back into the cold box through the spacing, a steel wire mesh 73 needs to be set up to connect the top flue 7 with the cold box chimney, so that the top flue 7 receives the gases from the exhaust flue in the gas collecting bridge 1 and discharges them from the cold box.
[0036] As Figure 6 shown, the top flue 7 is surrounded by a steel wire mesh 73. The steel wire mesh 73 is fixed by a planar support frame 71 and a support beam 72, specifically as follows: The planar support frame 71 is arranged parallel to the top panel of the cold box. One end of the planar support frame 71 is welded and fixed to the outside of the top end of the gas collecting bridge 1, and the other end is welded and fixed to one end of the support beam 72. The support beam 72 is perpendicularly welded between the planar support frame 71 and the top panel of the cold box. The steel wire mesh 73 can be fixed to the planar support frame 71 and the support beam 72 respectively by spot welding, and together with the cold box panel and the top panel of the cold box, it forms the top flue 7.
[0037] All the flammable and toxic gases in the cold box are collected through the flue inside the gas collecting bridge 1 and discharged from the chimney at the top of the cold box through the top flue 7. To prevent the gases from accumulating and exploding inside the cold box, a variety of gas detectors are also installed in the cold box chimney, such as H2 detectors, CO detectors, or CH4 detectors, etc. In addition, to prevent the perlite inside the cold box from being discharged from the cold box through the top flue 7, the outside of the top flue 7 is also wrapped with a high-density fiberglass cloth 2, and the high-density fiberglass cloth 2 is tied to the steel wire mesh 73 with copper wires.
[0038] The above-described embodiments are only a preferred solution of the present utility model, but it is not intended to limit the present utility model. Those of ordinary skill in the relevant technical field can still make various changes and modifications without departing from the spirit and scope of the present utility model. Therefore, all technical solutions obtained by means of equivalent replacement or equivalent transformation fall within the protection scope of the present utility model.
Claims
1. A cold box structure with an exhaust device, characterized in that, It includes a gas collecting bridge (1), a support base (3), a bracket (4), a U-shaped fixing bracket (5), an upper end support frame (6) and a flue (7) arranged in the cold box; the gas collecting bridge (1) is arranged from bottom to top in the cold box, and a through exhaust flue is formed inside the gas collecting bridge (1); One end of the support base (3) is fixed to the inner side of the cold box panel, and the support base (3) extends obliquely upward; the bracket (4) is arranged perpendicular to the cold box panel, one end of the bracket (4) is fixed to the inner side of the cold box panel, and the other end is fixedly connected to the other end of the support base (3); the gas collecting bridge (1) is arranged above the bracket (4); a number of gas collecting bridge holes (101) for gas collection are formed on the surface of the gas collecting bridge (1); A U-shaped fixing bracket (5) is fixed to the top end of the gas collecting bridge (1), the U-shaped fixing bracket (5) is arranged around the periphery of the gas collecting bridge (1), and both ends of the U-shaped fixing bracket (5) are fixedly connected to the cross beam on the inner side of the cold box panel through the upper end support frame (6) respectively; there is a spacing between the top of the gas collecting bridge (1) and the top panel of the cold box to form a top flue (7), and the top flue (7) receives the gas from the exhaust flue in the gas collecting bridge (1); A steel wire mesh (73) is arranged to connect the top flue (7) with the cold box chimney to discharge the cold box.
2. The cold box structure with an exhaust device according to claim 1, characterized in that, A first limiting member (8) is welded and fixed to the end of the bracket (4) away from the cold box panel to prevent the gas collecting bridge (1) from moving outwards; the first limiting member (8) is made of steel plate.
3. The cold box structure with an exhaust device according to claim 1, characterized in that, A second limiting member (9) is welded and fixed to the side of the gas collecting bridge (1) close to the cold box panel, and the second limiting member (9) is arranged along the width direction of the gas collecting bridge (1) to prevent the gas collecting bridge (1) from moving inwards.
4. The cold box structure with an exhaust device according to claim 3, characterized in that, The second limiting member (9) is made of angle steel.
5. The cold box structure with an exhaust device according to claim 1, characterized in that, Both the upper end support frame (6) and the bracket (4) are made of angle steel.
6. The cold box structure with an exhaust device according to claim 1, characterized in that, A high-density fiberglass cloth (2) is arranged outside the gas collecting bridge (1) to prevent pearlite sand in the cold box from entering the exhaust flue.
7. The cold box structure with an exhaust device according to claim 1, characterized in that, The high-density fiberglass cloth (2) is fixed to the steel wire mesh (73) through copper wires to prevent pearlite sand in the cold box from being discharged from the cold box through the top flue (7).
8. The cold box structure with an exhaust device according to claim 1, characterized in that, The steel wire mesh (73) is fixed through a plane support frame (71) and a support beam (72) as follows: the plane support frame (71) is arranged parallel to the top panel of the cold box, one end of the plane support frame (71) is welded and fixed to the outside of the top of the gas collecting bridge (1), and the other end is welded and fixed to one end of the support beam (72); the support beam (72) is perpendicularly welded between the plane support frame (71) and the top panel of the cold box; the steel wire mesh (73) is fixed to the sides of the plane support frame (71) and the support beam (72) away from the top flue (7) by spot welding respectively.
9. The cold box structure with an exhaust device according to claim 1, characterized in that, The included angle between the support base (3) and the cold box panel is set to be 30° - 60°.
10. The cold box structure with an exhaust device according to claim 1, characterized in that, The top flue (7) is communicated with the cold box chimney, and one or more of an H2 detector, a CO detector or a CH4 detector are installed in the chimney.