Injection tank with pressure relief device
By designing a solid-gas separation device in the blowing tank and using the pressure relief gas to blow the spiral separator to separate the material, the problem of excessive material discharge during the blowing tank is solved, reducing the impact on the equipment, and extending the service life of the equipment.
Patent Information
- Application Number
- CN202421406303.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-19
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-06-19
AI Technical Summary
When the blowing tank is relieved, the remaining internal materials will be discharged along with the pressure relief pipeline, causing impact and flushing to subsequent equipment such as valves and pipelines, reducing the service life of the equipment.
A blowing tank with a pressure relief device is designed, and a solid-gas separation device is adopted, including a solid-gas separation pipeline and a spiral separator. The spiral separator is blown by a pressure relief gas to rotate, separate gas and materials, reduce material discharge and reduce impact on the equipment.
It effectively reduces the discharge of materials in the blowing tank during pressure relief, reduces the impact and erosion on subsequent equipment, and extends the service life of the equipment.
Smart Images
Figure CN222665874U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of spray cans, in particular to a spray can with a pressure relief device. Background Art
[0002] In modern blast furnace ironmaking technology, pulverized coal injection is one of the important means of energy saving and consumption reduction, and it is also one of the indispensable technologies of modern blast furnaces. The injection tank uses gas pressure to transport materials out, and needs to go through the processes of loading, pressurizing, transporting, and depressurizing, and then repeat the cycle.
[0003] However, the spray tank will not be completely emptied when conveying materials. A little bit of material will be left in the spray tank each time to prevent material flow interruption. For example, if the spray tank is filled with 20 tons of material, 15 tons will be conveyed out, and 5 tons will be left in the tank so that it can switch to another tank during the uninterrupted conveying process. However, the remaining material in the spray tank is pressurized. During the pressure relief process of the spray tank, the remaining material inside will be discharged out of the tank along with the pressure relief pipe, which will bring great impact and scouring to subsequent equipment such as valves and pipelines, reducing the service life of the equipment. Utility Model Content
[0004] The utility model aims to solve the above problems and designs a spray tank with a pressure relief device, which solves the problem that when the spray tank is depressurized, the material will be discharged out of the tank and cause impact on other supporting equipment.
[0005] To achieve the above-mentioned purpose, the technical solution of the utility model is as follows: a spray tank with a pressure relief device comprises a spray tank body, a solid-gas separation device is arranged on the top of the spray tank body, the solid-gas separation device comprises a solid-gas separation pipeline and a spiral separator rotatably arranged in the solid-gas separation pipeline, a pressure relief pipeline is arranged on the side of the solid-gas separation pipeline, the other end of the pressure relief pipeline is communicated with the inner side of the spray tank body, a pressure relief valve is arranged on the pressure relief pipeline, and the pressure relief gas in the spray tank body is blown tangentially to the spiral separator through the pressure relief pipeline, and can blow the spiral separator to rotate;
[0006] The upper and lower ends of the solid-gas separation pipeline are respectively provided with an air outlet and a material drop port, the material drop port extends to the inner side of the spray tank body, a rotatable gate is arranged at the material drop port, and a gap for gas to pass through is provided between the spiral separator and the inner wall of the solid-gas separation pipeline.
[0007] Preferably, the spiral separator comprises a rotating shaft and a spiral structure extending axially along the rotating shaft, and the spiral structure can control the downward movement of the material when it is rotated by the pressure relief gas.
[0008] Preferably, a fixing plate is provided on the inner side of the solid-gas separation pipeline near both ends, and both ends of the rotating shaft are rotatably connected to the fixing plate via bearings, and the fixing plate has holes.
[0009] Preferably, one end of the pressure relief pipe away from the fixed separation pipe is connected obliquely downward to the middle of the top of the spray tank body.
[0010] Preferably, a buffer space for material buffering is formed between the lower end of the spiral separator and the gate.
[0011] Preferably, the bottom of the spray tank body has a discharge port, and a discharge pipe is arranged at the discharge port; the top or side of the spray tank body has a feed port, and a feed pipe is arranged at the feed port.
[0012] Preferably, a preload spring is provided at a hinge between the gate and the solid-gas separation pipeline, and under the action of the preload spring, the gate can close the blanking opening of the solid-gas separation pipeline.
[0013] Preferably, a driving mechanism for driving the gate to rotate is provided at the lower end of the solid-gas separation pipeline, and the driving mechanism can control the opening and closing of the gate.
[0014] Compared with the prior art, the beneficial effects are:
[0015] In the utility model, a solid-gas separation device is added to the top of the spray tank, one side of the solid-gas separation device is connected with the spray tank through a pressure relief pipe, the lower end of the solid-gas separation device extends into the spray tank, and a gate is arranged at the lower end. When the spray tank needs to release pressure, the pressure relief gas will enter the solid-gas separation pipe through the pressure relief pipe, and the high-pressure gas will blow the spiral separator to rotate. During the rotation of the spiral separator, the solid and gas in the high-pressure gas can be separated, and the pressure relief gas can be discharged from the upper end of the solid-gas separation pipe. The coal powder will remain in the solid-gas separation pipe under the action of the spiral separator, and the gate is opened to allow the coal powder to flow back into the spray tank, which can greatly reduce or lower the material discharge amount. Only a small part of the coal powder will be discharged from the spray tank along with the pressure relief gas, thereby reducing the impact and scouring on subsequent equipment such as valves and pipelines, and improving the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a structural schematic diagram of the spray tank in the utility model;
[0017] Figure 2 It is a schematic diagram of the cross-sectional structure of the solid-gas separation device in the spray tank;
[0018] Figure 3 It is a structural schematic diagram of the solid-gas separation pipeline.
[0019] In the figure, 1. the spray tank body; 2. the solid-gas separation pipeline; 201. the buffer space; 3. the spiral separator; 31. the rotating shaft; 32. the spiral structure; 4. the pressure relief pipeline; 5. the discharge pipeline; 6. the feed pipeline; 7. the fixed plate; 8. the gate; 9. the pressure relief valve. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0021] like Figure 1 As shown, a preferred embodiment of the utility model proposes a blowing tank with a pressure relief device, which mainly includes a blowing tank body 1, a solid-gas separation pipeline 2 and a spiral separator 3, wherein the spiral separator 3 is arranged inside the solid-gas separation pipeline 2, and the solid-gas separation pipeline 2 is vertically fixed on the top of the blowing tank body 1. An inclined pressure relief pipeline 4 is arranged on the side of the solid-gas separation pipeline 2, and the two ends of the pressure relief pipeline 4 are respectively welded to the top of the blowing tank body 1 and the solid-gas separation pipeline 2 and connected with the two. When the blowing tank body 1 is pressed downward, the pressure relief gas flows to the solid-gas separation pipeline 2 through the pressure relief pipeline 4, and blows the spiral separator 3 to rotate, thereby separating the gas in the pressure relief gas from the coal powder, and the gas can flow out along the solid-gas separation pipeline 2, and the coal powder is retained.
[0022] like Figure 1 As shown, the solid-gas separation pipeline 2 is located at the top of the blowing tank body 1 near the edge, and the upper and lower ends of the solid-gas separation pipeline 2 respectively have an air outlet and a feed outlet. The end of the solid-gas separation pipeline 2 where the feed outlet is located will extend into the blowing tank body 1 by an appropriate length, and at the same time, the other end of the pressure relief pipeline 4 (i.e., the end away from the solid-gas separation pipeline 2) will be connected to the middle position of the top of the blowing tank body 1, so that the pressure relief gas of the blowing tank body 1 can be evenly discharged through the pressure relief pipeline 4.
[0023] like Figure 2 , Figure 3 As shown, the spiral separator 3 is composed of a rotating shaft 31 and a spiral structure 32 extending axially along the rotating shaft 31. The spiral structure 32 extends radially outward for a certain length to increase the area of the windward surface. When the depressurized gas blows toward the spiral structure 32, the spiral separator 3 can rotate.
[0024] In the solid-gas separation pipeline 2, fixed plates 7 are provided near the gas outlet and the discharge port. The fixed plates 7 are welded to the inner wall of the solid-gas separation pipeline 2. Both ends of the rotating shaft 31 are rotatably connected to the center of the two fixed plates 7 through bearings. At the same time, a number of holes are provided on the fixed plates 7 to facilitate the gas to go out from the gas inlet and the coal powder to go out from the discharge port.
[0025] A certain gap is left between the spiral structure 32 and the inner wall of the solid-gas separation pipeline 2. When the pressure-relief gas blows the spiral structure 32 to drive the rotating shaft 31 to rotate, due to the obstruction of the spiral structure 32 and the dead weight of the coal powder, the gas in the pressure-relief gas will flow out from the gas outlet of the solid-gas separation pipeline 2 along the spiral structure 32, and the coal powder will settle down. The spiral separator 3 will control the coal powder to move downward when rotating and remain in the solid-gas separation pipeline 2.
[0026] In order to prevent the pressure in the spray tank body 1 from directly impacting the inside of the solid-gas separation pipe 2 from the drop-out port at the bottom of the solid-gas separation pipe 2 during pressure relief, so that the pressure is directly released from the drop-out port of the solid-gas separation pipe 2, a gate 8 is provided at the drop-out port of the solid-gas separation pipe 2, and the gate 8 is hinged to the solid-gas separation pipe 2. In this embodiment, a pre-tightening spring is provided at the hinge between the gate 8 and the solid-gas separation pipe 2. Under the action of the pre-tightening spring, the gate 8 is closed to block the drop-out port. At the same time, there will be a pressure difference on both sides of the gate 8, so that the gate 8 is closed.
[0027] A certain space is left between the lower end of the spiral separator 3 and the gate 8 as a buffer space 201 for coal powder. The coal powder after solid-gas separation will remain in the buffer space 201. When the coal powder accumulates to a certain extent, the weight of the coal powder will overcome the preload force of the preload spring and the upward pressure on the gate 8 in the spray tank body 1, so that the gate 8 opens downward to a certain angle, and the coal powder will naturally fall into the inside of the spray tank body 1. When the weight of the coal powder is not enough to overcome the pressure on the gate 8 in the closing direction, the gate 8 will close naturally.
[0028] In other technical solutions, the preload spring may not be provided, and a driving mechanism such as a cylinder or a motor may be provided to control the gate 8 to open. The driving mechanism controls the gate to open at a fixed time so that the coal powder can flow out of the buffer space 201.
[0029] refer to Figure 1 A pressure relief valve 9 is also provided on the pressure relief pipeline 4 to control the opening or closing of the pressure relief pipeline 4. The pressure relief valve 9 is opened when pressure relief is required, and is closed when materials are normally transported. One end of the pressure relief pipeline 4 is connected to the middle position of the solid-gas separation pipeline 2 so that the pressure relief gas has a sufficient length when passing through the spiral separator 3.
[0030] A discharge port is provided at the bottom of the spray tank body 1, which is connected to the discharge pipe 5 for discharging coal powder. A feed port is provided at the top or side of the spray tank body 1, which is connected to the feed pipe 6 for inputting coal powder.
[0031] The above technical solutions only reflect the preferred technical solutions of the technical solutions of the utility model. Some changes that may be made to certain parts thereof by technicians in this technical field all reflect the principles of the utility model and fall within the protection scope of the utility model.
Claims
1. A spray tank with a pressure relief device, comprising a spray tank body (1), characterized in that: A solid-gas separation device is arranged on the top of the spray tank body (1), and the solid-gas separation device comprises a solid-gas separation pipeline (2) and a spiral separator (3) rotatably arranged in the solid-gas separation pipeline (2); a pressure relief pipeline (4) is arranged on the side of the solid-gas separation pipeline (2); the other end of the pressure relief pipeline (4) is communicated with the inner side of the spray tank body (1); a pressure relief valve (9) is arranged on the pressure relief pipeline (4); the pressure relief gas in the spray tank body (1) is tangentially blown toward the spiral separator (3) through the pressure relief pipeline (4), and can blow the spiral separator (3) to rotate; The solid-gas separation pipeline (2) has a gas outlet and a material drop opening at the upper and lower ends respectively. The material drop opening extends to the inner side of the spray tank body (1). A rotatable gate (8) is provided at the material drop opening. A gap for gas to pass through is provided between the spiral separator (3) and the inner wall of the solid-gas separation pipeline (2).
2. The spray tank with a pressure relief device according to claim 1, characterized in that: The spiral separator (3) comprises a rotating shaft (31) and a spiral structure (32) extending along the axial direction of the rotating shaft (31); the spiral structure (32) can control the downward movement of materials when rotated by the depressurized gas.
3. The spray tank with a pressure relief device according to claim 2, characterized in that: Fixed plates (7) are provided on the inner side of the solid-gas separation pipeline (2) near both ends, and both ends of the rotating shaft (31) are rotatably connected to the fixed plates (7) via bearings, and the fixed plates (7) have holes.
4. The spray tank with a pressure relief device according to claim 1, characterized in that: One end of the pressure relief pipe (4) away from the fixed separation pipe is connected obliquely downward to the middle of the top of the spray tank body (1).
5. The spray tank with a pressure relief device according to claim 1, characterized in that: A buffer space (201) for material buffering is formed between the lower end of the spiral separator (3) and the gate (8).
6. The spray tank with a pressure relief device according to claim 1, characterized in that: The bottom of the spray tank body (1) is provided with a discharge port, and a discharge pipe (5) is arranged at the discharge port; the top or side of the spray tank body (1) is provided with a feed port, and a feed pipe (6) is arranged at the feed port.
7. The spray tank with a pressure relief device according to any one of claims 1 to 6, characterized in that: A preload spring is provided at the hinge between the gate (8) and the solid-gas separation pipeline (2), and under the action of the preload spring, the gate (8) can close the blanking opening of the solid-gas separation pipeline (2).
8. The spray tank with a pressure relief device according to any one of claims 1 to 6, characterized in that: A driving mechanism for driving the gate (8) to rotate is provided at the lower end of the solid-gas separation pipeline (2), and the driving mechanism can control the gate (8) to open and close.