Device for dredging blockage of high-pressure air cooler

Abstract

The utility model discloses a device for dredging blockage of a high-pressure air cooler, and relates to high-pressure air coolers. A snakelike metal bent pipe is laid on the upper surface of an air cooler tube box of the high-pressure air cooler body, and the snakelike metal bent pipe is tightly attached to a finned tube on the air cooler tube box; one end of the snakelike metal bent pipe is connected with a steam pipe; a stop valve is arranged on the steam pipe; a foldable heat preservation plate covers the snake-shaped metal bent pipe; an outlet pipe remote temperature sensor is arranged on the outlet pipeline, and a main outlet convergence pipe remote temperature sensor is arranged on the hot high-pressure gas outlet pipeline; the device does not need to be stopped for treatment and does not need to treat blockage one by one after the finned tubes are dismounted; and online operation air cooling dredging can be achieved, and the overhaul risk and the overhaul cost are greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to coal oil high pressure air cooling technical field relates to high pressure air cooler, concretely is a device for dredging high pressure air cooler blockage. BACKGROUND

[0002] When the hydrofining / hydrocracking device is running, the hot high pressure air cooler plays a vital role in system operation, and once the air cooler is blocked, the operation cost is increased, and the system is stopped, and even a major safety accident occurs.

[0003] The reason for the blockage of the hot high pressure air cooler is that the long-term accumulation of heavy oil wax causes partial finned tube blockage, which in turn causes the cooling efficiency of the air cooler to decrease, and in winter, all air cooler motors must be started to force the temperature to reach the operating temperature index and have no fault tolerance, and once an air cooler motor or a belt is abnormal, the system index will exceed the standard and even the system will be stopped, and in summer, the air cooler cannot meet the operating requirements. Usually, enterprises use desalted water spraying method for cooling, or stop the vehicle for processing.

[0004] Disadvantages:

[0005] 1. The full start of the air cooler motor and the increase of the desalted water use increase the equipment operation cost, and there is no spare machine and no fault tolerance.

[0006] 2. The water sprayed by the desalted water cooling falls on the motor, increasing the risk of motor water entry, shutdown and even burning;

[0007] 3. For chemical enterprises, shutdown for repair is very costly, and after dredging, the risk of leakage of the disassembled finned tube block increases, and once the block leakage is found after starting, the vehicle must be stopped for repair. INVENTION CONTENTS

[0008] The utility model overcomes the defects of the prior art and provides a device for dredging high pressure air cooler blockage. The air cooler tube bundle blocked by heavy oil wax can be dredged online, the air cooler has good heat dissipation function, and the desired cooling capacity is achieved.

[0009] In order to achieve the above purpose, the utility model is realized by the following technical scheme:

[0010] The utility model relates to a device for dredging high pressure air cooler blockage, including high pressure air cooler body, the high pressure air cooler body includes air cooler pipe box, and the air cooler pipe box is provided with a plurality of finned tube, the high pressure air cooler body is connected with motor, the high pressure air cooler body is connected with outlet pipeline, and the outlet pipeline is connected with hot high separation gas outlet pipeline, the air cooler pipe box upper surface of high pressure air cooler body is paved with serpentine metal elbow pipe, and the serpentine metal elbow pipe is closely attached to the finned tube on the air cooler pipe box, one end of serpentine metal elbow pipe is connected with steam pipe, the steam pipe is provided with stop valve, and the serpentine metal elbow pipe is covered with foldable heat preservation board, outlet pipeline is provided with outlet pipe remote temperature sensor, and the hot high separation gas outlet pipeline is provided with total outlet pipe remote temperature sensor.

[0011] Further, one end of the heat preservation board is fixed to one end of the serpentine metal elbow pipe, and the other end of the heat preservation board is a movable end.

[0012] Further, the upper surface of the heat preservation board is provided with fireproof cotton blanket.

[0013] Further, the other end of the heat preservation board is connected with a handle.

[0014] Further, the high pressure air cooler body is provided with two groups, and the two groups of high pressure air cooler bodies are connected with two outlet pipelines; the two outlet pipelines of one group of high pressure air cooler bodies are connected with the hot high separation gas outlet pipeline through a first branch pipe, and the two outlet pipelines of the other group of high pressure air cooler bodies are connected with the hot high separation gas outlet pipeline through a second branch pipe.

[0015] Further, the four outlet pipelines connected by the two groups of high pressure air cooler bodies are provided with outlet pipe remote temperature sensors.

[0016] Further, the first branch pipe and the second branch pipe are provided with outlet pipe remote temperature sensors.

[0017] Further, the heat preservation board is an aluminum plate.

[0018] The utility model has the advantages that:

[0019] The utility model can realize online dredging of the hot high pressure air cooler, efficiently and quickly process the heavy oil wax blockage problem of the high pressure air cooler, and solve the low cooling efficiency problem of the air cooler. The risk and cost of the traditional method are reduced, and the processing time is saved. Specifically:

[0020] 1, adopt metal elbow pipe, it has good heat conductivity, can heat finned tube very well, can pass in 0.5MPa steam inside, guarantee the safety of operation.

[0021] 2, adopt folding aluminum plate and fireproof blanket, folding aluminum plate is simple and fast control for operator, fireproof blanket has good heat preservation performance and fireproof performance, perfect guarantee the heat preservation effect and safety effect of operation.

[0022] 3, the device does not need to stop processing, also does not need to remove the root processing, adopt online operation air cooling dredging, can greatly reduce the maintenance risk and maintenance cost. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is the explosion structure diagram of the device for dredging the blockage of the high-pressure air cooler of the utility model;

[0024] Figure 2 is the temperature monitoring position schematic diagram of the inlet and outlet pipelines of the high-pressure air cooler of the utility model;

[0025] Figure 3 is the plan view of the serpentine metal elbow pipe;

[0026] Figure 4 is the side view of the aluminum plate covering on the serpentine metal elbow pipe;

[0027] Figure 5 is the side view of the aluminum plate folding.

[0028] REFERENCE SIGNS:

[0029] 1, air cooler pipe box;2, finned tube;3, serpentine metal elbow pipe;4, steam pipe;5, stop valve;6, aluminum plate;7, fireproof blanket;8, handle;9, outlet pipeline;10, inlet pipeline;11, hot high separation gas inlet pipeline;12, first branch pipe;13, hot high separation gas outlet pipeline;14, second branch pipe;15, outlet pipe remote temperature sensor;16, outlet convergence pipe remote temperature sensor;17, total outlet convergence pipe remote temperature sensor;18, motor. DETAILED DESCRIPTION

[0030] In order to make the technical problems, technical schemes and beneficial effects to be solved by the utility model more clear and obvious, combining with the embodiment and the drawing, the utility model is further described in detail. It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model. The technical scheme of the utility model is described in detail below combining with the embodiment and the drawing, but the protection scope is not limited by this.

[0031] Referring to Figures 1 to 5The embodiment provides a device for dredging the blockage of high-pressure air coolers, which comprises two groups of high-pressure air cooler bodies, namely A101A / B and A101C / D; each of the high-pressure air cooler bodies comprises an air cooler pipe box 1, and a plurality of finned pipes 2 are arranged in the air cooler pipe box 1; each high-pressure air cooler body is connected with two motors 18; a serpentine metal bent pipe 3 is arranged on the upper surface of the air cooler pipe box 1 of each high-pressure air cooler body, and the serpentine metal bent pipe 3 is in close contact with the finned pipe 2 on the air cooler pipe box 1. One end of the serpentine metal bent pipe 3 is connected with a steam pipe 4; a stop valve 5 for adjusting the steam flow is arranged on the steam pipe 4; and the steam pipe 4 is used for introducing 0.5mpa steam.

[0032] An foldable aluminum plate 6 is arranged above the serpentine metal bent pipe 3, and a fireproof cotton blanket 7 is arranged on the upper surface of the aluminum plate 6; one end of the aluminum plate 6 is fixed with the serpentine metal bent pipe 3, and the other end of the aluminum plate 6 is a movable end and is connected with a handle 8; the handle 8 is used for folding or spreading the aluminum plate 6. When it is needed to dredge the blocked finned pipe 2 on line, the stop valve 5 is opened, 0.5mpa steam is introduced into the serpentine metal bent pipe 3 through the steam pipe 4, the finned pipe 2 is heated, the aluminum plate 6 is pulled and spread together with the fireproof cotton blanket 7 through the handle 8, the aluminum plate 6 covers the serpentine metal bent pipe 3 above to keep warm, and when it is not needed to dredge, the aluminum plate 6 can be pushed up and folded through the handle 8, so that the finned pipe 2 is ventilated and cooled. The folding and unfolding degrees of the aluminum plate 6 can be controlled through the handle 8, the temperature of the finned pipe 2 is increased to a temperature above the heavy oil wax condensation point, and the heavy oil wax in the finned pipe is melted and taken out by hot high-pressure gas.

[0033] The two groups of high-pressure air cooler bodies A101A / B and A101C / D are connected with two outlet pipelines 9 and two inlet pipelines 10, the two inlet pipelines 10 of A101A / B and A101C / D are connected with a hot high-pressure gas inlet pipeline 11; the two outlet pipelines 9 of A101A / B are connected with a hot high-pressure gas outlet pipeline 13 through a first branch pipe 12, the two outlet pipelines 9 of A101C / D are connected with the hot high-pressure gas outlet pipeline 13 through a second branch pipe 14; outlet pipe remote temperature sensors 15 are arranged on the two outlet pipelines 9 of A101A / B and A101C / D, outlet convergence pipe remote temperature sensors 16 are arranged on the first branch pipe 12 and the second branch pipe 14; and a total outlet convergence pipe remote temperature sensor 17 is arranged on the hot high-pressure gas outlet pipeline 13.

[0034] When the finned tube 2 in one of the high-pressure air coolers is blocked, the two motors 18 connected to the high-pressure air cooler body A101A / B are stopped, 0.5 MPa steam is introduced into the serpentine metal pipe 3 of the high-pressure air cooler body A101A / B, the steam flow is adjusted by the stop valve 5, the corresponding aluminum plate 6 is pulled by the handle 8 to cover the serpentine metal pipe 3, so that the temperature of the tube bundle of the finned tube 2 is increased to 90-100 DEG C, and the heavy oil wax in the finned tube 2 is melted and taken out to the rear system by the hot high-pressure gas until the infrared thermal imager detects that the tube bundle is unblocked.

[0035] During the dredging process, the temperature of the four outlet pipe remote temperature sensors 15 is monitored every hour, the temperature of the two outlet pipes 9 of the A101A / B is ensured to be not more than 100 DEG C, the temperature of the two outlet pipes 9 of the A101C / D is ensured to be not more than 55 DEG C, the temperature detected by the two outlet pipe remote temperature sensors 16 and the total outlet pipe remote temperature sensor 17 is strictly monitored by the monitoring personnel, the temperature of the first branch pipe 12 is ensured to be not more than 100 DEG C, the temperature of the second branch pipe 14 is ensured to be not more than 55 DEG C, and the temperature of the high-pressure gas outlet pipe 13 is ensured to be not more than 60 DEG C, so as to ensure the normal operation of the centrifugal machine in the rear system. If the temperature exceeds, the on-site personnel adjusts the opening of the aluminum plate 6 and the steam temperature in the serpentine metal pipe 3 in time to ensure the stable and safe operation.

[0036] Before the air cooler is dredged, when the high-load working condition is running, all the four motors 18 of the two high-pressure air coolers cannot reduce the temperature to the normal temperature control range, and the temperature is maintained by spraying desalted water, which causes the air-cooled motor to be easily watered, the operation risk of the motor 18 is great, and the system has great risk to the safe and stable operation. After the device is dredged, the four air cooler motors 18 only need to start 2 to control the outlet temperature of the air cooler in the normal range. The use of desalted water and the power consumption cost is reduced, the system operation is stabilized, and the time and money wasted by large-scale parking treatment problems are avoided.

[0037] The above is a further detailed description of the present application in combination with a specific preferred embodiment, which cannot be regarded as limiting the specific embodiments of the present application to this, and for ordinary skilled persons in the technical field to which the present application belongs, without departing from the present application, a number of simple deductions or substitutions can be made, which should be regarded as belonging to the scope of patent protection determined by the claims submitted by the present application.

Claims

1. A device for unblocking a high-pressure air cooler, comprising a high-pressure air cooler body, the high-pressure air cooler body comprising an air cooler tube box (1), a plurality of finned tubes (2) being arranged in the air cooler tube box (1); the high-pressure air cooler body being connected with a motor (18); the high-pressure air cooler body being connected with an outlet pipeline (9), the outlet pipeline (9) being connected with a hot high-pressure gas outlet pipeline (13); characterized in that, The high-pressure air cooler body is provided with serpentine metal bent pipes (3) laid on the upper surface of the air cooler pipe box (1), the serpentine metal bent pipes (3) are in close contact with the finned pipes (2) on the air cooler pipe box (1), one end of the serpentine metal bent pipes (3) is connected with steam pipes (4), the steam pipes (4) are provided with stop valves (5), foldable heat insulation plates are covered above the serpentine metal bent pipes (3), outlet pipe lines (9) are provided with outlet pipe remote temperature sensors (15), and the hot high-pressure separation gas outlet pipe line (13) is provided with a total outlet pipe remote temperature sensor (17).

2. A device for unblocking the blockage of a high-pressure air cooler according to claim 1, characterized in that, One end of the heat insulation plate is fixed with one end of the serpentine metal bent pipe (3), and the other end of the heat insulation plate is a movable end.

3. A device for unblocking the blockage of high-pressure air coolers according to claim 1, characterized in that, The upper surface of the heat insulation plate is provided with fireproof cotton blanket (7).

4. A device for unblocking the blockage of a high-pressure air cooler according to claim 2, characterized in that, The other end of the heat insulation plate is connected with a handle (8).

5. A device for unblocking the blockage of high-pressure air coolers according to claim 1, characterized in that, The high-pressure air cooler body is provided with two groups, and the two groups of high-pressure air cooler bodies are connected with two outlet pipe lines (9); the two outlet pipe lines (9) of one group of high-pressure air cooler bodies are connected with the hot high-pressure separation gas outlet pipe line (13) through a first branch pipe (12), and the two outlet pipe lines (9) of the other group of high-pressure air cooler bodies are connected with the hot high-pressure separation gas outlet pipe line (13) through a second branch pipe (14).

6. A device for unblocking a high pressure air cooler according to claim 5, characterized in that, The four outlet pipe lines (9) connected with the two groups of high-pressure air cooler bodies are provided with outlet pipe remote temperature sensors (15).

7. A device for unblocking a high pressure air cooler according to claim 6, characterized in that, The first branch pipe (12) and the second branch pipe (14) are provided with outlet pipe remote temperature sensors (16).

8. A device for unblocking the blockage of a high-pressure air cooler according to any one of claims 1-4, characterized in that, The heat insulation plate is an aluminum plate (6).

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