CN114413473A

CN114413473A - Online frozen coal thawing device and method

Info

Publication number: CN114413473A
Application number: CN202210018718.8A
Authority: CN
Inventors: 方明成; 徐涛; 曹辉; 王瑞; 韩清国; 李先超; 孙胜臣; 盖建旺; 刘超
Original assignee: Hua Electricity Qu Dong Electricity Generating Corp Ltds
Current assignee: Hua Electricity Qu Dong Electricity Generating Corp Ltds
Priority date: 2022-01-08
Filing date: 2022-01-08
Publication date: 2022-04-29
Anticipated expiration: 2042-01-08
Also published as: CN114413473B

Abstract

The invention discloses an online frozen coal thawing device which comprises a railway track, wherein a quick thawing area, a carriage heat preservation area and a readjusting machine are arranged above the railway track, the readjusting machine is arranged at the end part of the railway track and close to the carriage heat preservation area, a steam source pipeline is arranged between the quick thawing area and the carriage heat preservation area, a steam source pipeline is arranged in the quick thawing area, the carriage heat preservation area comprises a carriage heating heat preservation shed and a steam heating system, the steam source pipeline is connected with the steam source pipeline, and the steam heating system is connected with the steam source pipeline. The invention realizes the on-line quick thawing of frozen coal transported by a train in the process of train receiving and unloading, does not need to wait for the natural thawing of a carriage and delay waiting, is reformed on the prior railway track line, changes the prior normal receiving and unloading operation flow of a tippler, can be operated automatically, has simple and easy operation, is safe and efficient, greatly saves the labor cost and integrally reduces the production and operation cost.

Description

Online frozen coal thawing device and method

Technical Field

The invention relates to an online frozen coal unfreezing device and method, and belongs to the technical field of safe and economic operation of thermal power plants.

Background

The thermal power plant needs a large amount of coal, when the coal is transported by using a train, under the condition that the environmental temperature is lower than 0 ℃, because the coal contains certain moisture, when the coal is transported to the thermal power plant, the coal can be frozen, the coal and the inner wall of the carriage are frozen together, and the lower the environmental temperature is, the more serious the freezing phenomenon is.

The train for transporting coal adopts two types, namely an open wagon carriage and a K-shaped hopper carriage, the existing train for transporting coal is not provided with a coal unfreezing device, after the open wagon carriage is overturned by a tipper to be unloaded, more than about one fourth of coal is still left in the carriage due to freezing, tools such as a sledge hammer, a chisel, a shovel and the like are needed to be used for manual cleaning, the inner wall of the carriage is easily damaged in the cleaning process, potential safety hazards exist, and the unloading and receiving efficiency is low; k type hopper compartment bottom door department of unloading leads to the door of unloading to be difficult to open owing to freeze, can cause near the door of unloading to freeze into the bold and lead to the fact not the coal when unloading, still block up the ditch coal grate of unloading easily, if adopt the sledge hammer to strike the supplementary door of unloading or wait for the carriage to unfreeze naturally and wait the mode when receiving and unloading, need a large amount of time, the efficiency of receiving and unloading has been reduced, it delays and is overtime easily to cause the unloading, it can produce train delay cost to receive and unload overtime, waste time and energy, the production and management cost of thermal power plant has wholly been increased.

Therefore, a device for rapidly thawing frozen coal is urgently needed to solve the above problems.

Disclosure of Invention

The invention aims to provide an online frozen coal unfreezing device and an online frozen coal unfreezing method, which can realize online rapid unfreezing of frozen coal transported by a train in the process of train loading and unloading, does not need to wait for natural unfreezing of a carriage, does not need to wait for time delay, is reformed on the existing railway track line, changes the normal loading and unloading operation process of the existing tipper, can be automatically operated, is simple and easy to operate, is safe and efficient, greatly saves labor cost, and integrally reduces production and operation cost.

In order to solve the technical problems, the invention adopts the following technical scheme: an online frozen coal thawing device comprises a railway track, wherein a quick thawing area, a carriage heat preservation area and a readjusting machine are arranged above the railway track, the readjusting machine is arranged at the end part of the railway track and is close to the carriage heat preservation area, a steam source pipeline is arranged between the quick thawing area and the carriage heat preservation area, a steam source pipeline is arranged in the quick thawing area, the carriage heat preservation area comprises a carriage heating heat preservation shed and a steam heating system, the steam source pipeline is connected with the steam source pipeline, and the steam heating system is connected with the steam source pipeline; the frozen coal transported by the train in the process of train loading and unloading can be quickly thawed on line without delaying to wait and change the normal loading and unloading operation procedures of the existing tipper, so that the method is convenient, quick, safe and efficient, and saves labor and production and operation costs; carriage heat preservation district, the carriage after unfreezing to steam heating with in time keep warm, prevent to receive low temperature environment and carriage middle part frozen coal influence to freeze once more before accomplishing the unloading, carriage heating heat preservation canopy internal energy holds two sections at least carriages simultaneously, passes through the carriage heating heat preservation canopy in-process in the carriage and unfreezes to the carriage in the frozen coal degree of depth, has reduced the coal and has frozen and produce the bold, prevents to block up the coal discharge ditch coal grate, improves the coal discharge efficiency.

The steam source pipeline comprises a steam supply pipeline A and a steam injection system, the steam injection system is connected with the steam source pipeline through the steam supply pipeline A, the steam heating system comprises a steam supply pipeline B and a steam heating pipeline, the steam heating pipeline is connected with the steam source pipeline through the steam supply pipeline B, fins are arranged on one part of the steam heating pipeline, which is provided with a spray head, is arranged in the carriage heating heat-preservation shed, the steam injection system comprises a steam pipeline A, a horizontal nozzle assembly, a steam pipeline B and a vertical nozzle assembly, the steam pipeline B is connected with the steam pipeline A, the steam pipeline A is connected with the steam supply pipeline A, the horizontal nozzle assembly is arranged on the steam pipeline A, and the vertical nozzle assembly is arranged on the steam pipeline B; the vertical nozzle assembly is adopted, the frozen coal in the unloading door area at the bottom of the K-shaped hopper carriage can be directly heated and thawed by steam, so that large blocks of the frozen coal are reduced, the unloading efficiency is improved, and the unloading door at the bottom of the K-shaped hopper carriage is protected; the vertical nozzle assembly is provided with a stop valve for controlling the steam source of the vertical nozzle assembly to be in a stopping state, and when the open wagon carriage passes above the vertical nozzle assembly, the vertical nozzle assembly does not work, so that the parts at the bottom of the open wagon carriage are prevented from being damaged due to overheating.

According to the on-line frozen coal unfreezing device, the steam source pipeline further comprises a photoelectric detector group, a controller and an audible and visual alarm, the controller is connected to the steam supply pipeline A, the photoelectric detector group is connected to the controller, and the audible and visual alarm is connected to the controller; the controller has two control modes of manual control and automatic control; in the automatic control mode, carriage passing signals are acquired through a photoelectric detector, and the on-off state of an electromagnetic valve is controlled by logical judgment, so that automatic control of steam spraying of a steam nozzle is realized, and steam is saved; the manual mode can be controlled manually according to the actual situation, and is safe and reliable; the audible and visual alarm is connected with the controller; before the steam nozzle is put into operation and when spouting the vapour, the warning is reminded, prevents that personnel from mistake from going into and spouting the vapour workspace, improves device safety in utilization.

According to the on-line frozen coal unfreezing device, the pressure gauge, the temperature gauge and the steam trap are sequentially arranged at the other part of the steam heating pipeline, which is arranged outside the carriage heating and heat insulation shed, the steam trap is close to the reconditioning machine, and the pressure gauge and the temperature gauge are both arranged close to the B steam supply pipeline; the steam trap heats the system pipeline before the system is put into operation, so that the severe vibration damage caused by the water carried by the pipeline steam can be effectively prevented; draining water from a system pipeline after the system is put into operation and is stopped, draining water stored in the pipeline, and preventing the water stored in the pipeline from being rusted; after the heat preservation area of the carriage is put into operation, the steam trap ensures that the steam in the heat preservation heating pipeline normally flows and is separated from water and steam, and the drained water can be collected and recovered, thereby saving water.

The utility model provides an online thawing apparatus of frozen coal, be provided with the A stop valve on the vapour source pipeline, A supplies to have set gradually B stop valve, solenoid valve and A trap on the vapour pipeline, and the controller is connected in the solenoid valve, has set gradually F stop valve and B trap on the B supplies the vapour pipeline.

According to the frozen coal online thawing device, the stop valve C is arranged on the steam pipeline A, and the stop valve E is arranged on the steam pipeline B.

The utility model provides an online thawing apparatus of frozen coal, still be provided with the D stop valve on the steam heating pipeline, the D stop valve is arranged in between manometer and the B steam supply pipeline, and the steam heating pipeline still is provided with the C trap on arranging the other part outside the carriage heating heat preservation canopy in, and the one end that is close to the steam trap is arranged in to the C trap.

In the online frozen coal thawing device, the two ends of the carriage heating and heat-insulating shed are respectively provided with the heat-insulating curtain; the carriage heating heat preservation shed and the heat preservation curtains on the two sides can adopt flexible heat preservation materials, so that the heat loss of the heat preservation shed is reduced; the thermal insulation shed is provided with the flexible thermal insulation curtains with the upper ends fixed along the two sides of the width direction of the track, the flexible thermal insulation curtains can be rolled upwards without influencing the unloading inspection of workers and the work of the tractor draft arms of the readjusting machine, and the use adaptability is good.

An online unfreezing method for frozen coal comprises the following steps:

s1, before the train carriage for transporting the frozen coal enters the rapid thawing area, the audible and visual alarm is started and various pipelines and equipment are overhauled, so that the pipeline vibration damage caused by vaporization of accumulated water in the pipeline when the accumulated water is heated is prevented, the device is prompted to be put into operation by workers, the workers are prevented from entering the air injection system area by mistake, and the safety is ensured;

s2, closing the stop valve C, the stop valve E and the stop valve D, opening the drain valve A and the drain valve B, opening the stop valve A, the stop valve B and the stop valve F, and opening the electromagnetic valves by the controller in a manual control mode to drain and warm the steam supply pipeline A in the fast thawing area and the steam supply pipeline B in the compartment heat preservation area; putting a steam trap, opening a C steam trap, opening a D stop valve, starting heating of a carriage heat preservation area, and opening a C stop valve to enable a quick thawing area to operate;

s3, adjusting the opening and closing state of the E stop valve according to the type of the train carriage, and keeping the closing state of the E stop valve if the open wagon carriage is driven into the quick thawing area;

s4, closing the drain valve A and the drain valve B; adjusting the opening degree of a stop valve A according to the indication of a pressure gauge and a temperature gauge; the controller is set in an automatic control mode, the frozen coal train carriage drives into the fast thawing zone, the photoelectric detector group sends out corresponding signals when detecting that the frozen coal train carriage passes through, the controller receives the signals, logically judges that the frozen coal train carriage passes through the fast thawing zone (2), starts an audible and visual alarm to prompt a worker that an air injection system is put into operation, controls the electromagnetic valve to be opened, and when the open wagon carriage passes through, the horizontal nozzle assembly keeps a steam ejection state;

s5, enabling the frozen coal train carriage passing through the quick thawing area to enter a carriage heat preservation area for thawing and heat preservation, and dragging by a readjusting machine to enter an unloading operation procedure;

s6, enabling the frozen coal train carriage to drive away from the rapid thawing area, enabling the photoelectric detector group to detect that the non-frozen coal train carriage passes through the rapid thawing area and send out corresponding signals, enabling the controller to receive the signals, determining that the non-frozen coal train carriage passes through the rapid thawing area according to logic judgment, controlling the electromagnetic valve to be closed, stopping steam ejection of the horizontal nozzle assembly and the vertical nozzle assembly, and stopping alarming by the audible and visual alarm;

and S7, closing the stop valve A, the stop valve B, the stop valve F, the stop valve C, the stop valve D and the stop valve E after all the frozen coal gondola car carriages are frozen, opening the drain valve A, the drain valve B and the drain valve C, manually closing the electromagnetic valve by the controller, and stopping the operation of the rapid thawing area and the carriage heat preservation area.

According to the method for unfreezing the frozen coal on line, if a K-shaped hopper car carriage drives into the quick unfreezing area, the E stop valve is opened, and when the K-shaped hopper car carriage passes through, the horizontal nozzle assembly and the vertical nozzle assembly keep a steam spraying state, so that the frozen coal train carriage is quickly unfrozen

Compared with the prior art, the invention has the advantages that:

1. the invention realizes the on-line quick thawing of frozen coal transported by a train in the process of train receiving and unloading, does not need to wait for the natural thawing of a carriage and delay waiting, is reformed on the existing railway track line, changes the normal receiving and unloading operation flow of the existing tipper, can be operated automatically, has simple and easy operation, is safe and efficient, greatly saves the labor cost and integrally reduces the production and operation cost;

2. the rapid thawing area is arranged, the carriage and the frozen coal are directly heated by steam by adopting the horizontal nozzle assembly, so that the frozen coal on the edge layer of the carriage and the frozen part of the carriage can be rapidly thawed, and the thawing efficiency is improved;

3. according to the invention, the steam nozzles are vertically and upwardly arranged at the upper part of the middle of the railway track, and are used for directly heating and unfreezing the frozen coal in the unloading door area at the bottom of the K-shaped hopper carriage by steam, so that the generation of large frozen coal is reduced, the unloading efficiency is improved, and the unloading door at the bottom of the K-shaped hopper carriage is protected;

4. the carriage heat preservation area can preserve heat of the carriage heated and thawed by steam in time, the carriage is prevented from being influenced by low-temperature environment and frozen coal in the middle of the carriage and from being frozen again before unloading is finished, at least two carriages can be simultaneously accommodated in the carriage heating heat preservation shed, and the frozen coal movement in the carriage is deeply thawed in the process that the carriage passes through the carriage heating heat preservation shed, so that the large blocks generated by freezing of coal are reduced, the coal unloading ditch coal grate is prevented from being blocked, and the coal unloading efficiency is improved;

5. the quick thawing area and the carriage heat preservation area are provided with at least three carriages in length, and when the carriage of the frozen coal open wagon is close to the traction arm of the reconditioning machine, the normal loading and unloading operation of the reconditioning machine is not influenced when the carriage of the frozen coal open wagon is communicated with the area, so that the frozen coal and the carriage are thawed continuously, the on-line completion can be realized without stopping and waiting, and the operation is convenient and quick;

6. the invention is provided with a photoelectric detector and a controller, wherein the controller has two control modes of manual control and automatic control; in an automatic control mode, carriage passing signals are acquired through a photoelectric detector, and the on-off state of an electromagnetic valve is controlled by logical judgment, so that automatic control of steam spraying of a steam nozzle is realized, and steam is saved; the manual mode can be controlled manually according to the actual situation, and is safe and reliable;

7. in the invention, sound-light alarms are arranged around the steam nozzle arrangement rack and are connected with a controller; before the steam nozzle is put into operation and during steam injection, the alarm is given to remind, so that personnel are prevented from entering a steam injection working area by mistake, and the use safety of the device is improved;

8. the steam pipeline is provided with the drain valve and the steam trap, and the system pipeline is heated before the system is put into operation, so that severe vibration damage caused by water carried by the pipeline steam can be effectively prevented; draining water from a system pipeline after the system is put into operation and is stopped, draining water stored in the pipeline, and preventing the water stored in the pipeline from being rusted; after the heat preservation area of the carriage is put into operation, the steam trap ensures normal flow and steam-water separation of steam in the heat preservation heating pipeline, and the drained water can be collected and recovered, so that water is saved;

9. the equipment is arranged above and at two sides of the railway track and symmetrically arranged, so that the normal passing, receiving and unloading of the train are not influenced, other fields are not occupied, and the device is simple in structure and easy to realize;

10. according to the invention, the carriage heating heat preservation shed and the heat preservation curtains on the two sides can be made of flexible heat preservation materials, so that the heat loss of the heat preservation shed is reduced; the flexible heat-insulation curtains with fixed upper ends are arranged on the two sides of the heat-insulation shed along the width direction of the track, the flexible heat-insulation curtains can be rolled up without influencing the unloading inspection of workers and the work of a readjusting machine traction arm, and the use adaptability is good;

11. according to the invention, the fins are arranged on the steam heating pipelines on two sides of the carriage heating and heat insulation shed, so that the heat exchange efficiency of the heating pipelines is high;

12. the two ends of the steam heating pipelines on the two sides of the carriage heating and heat preservation shed can be connected by the expandable elbows, so that the device has wide application range;

13. the rapid thawing area and the heat preservation area of the carriage share one path of main pipe steam source pipeline, and the quality of used steam is the same, so that the structure of the invention is simple;

14. the rapid thawing area and the carriage heat preservation area can be used in a matched manner, and the thawing effect is good; but also can be mutually independently put into operation, has strong adaptability and is convenient for operation control and equipment maintenance.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic diagram of the structure of the rapid thaw section of the present invention;

fig. 3 is a schematic view of the structure of the insulated compartment area of the present invention.

Reference numerals: 1-railway track, 2-rapid thawing area, 3-carriage heat preservation area, 4-reconditioning machine, 5-steam source pipeline, 6-thawing system, 7-carriage heating heat preservation shed, 8-steam heating system, 9-A steam supply pipeline, 10-air injection system, 11-B steam supply pipeline, 12-steam heating pipeline, 13-fin, 14-A steam pipeline, 15-horizontal nozzle component, 16-B steam pipeline, 17-vertical nozzle component, 18-photoelectric detector set, 19-controller, 20-audible and visual alarm, 21-pressure gauge, 22-thermometer, 23-steam trap, 24-A stop valve, 25-B stop valve, 26-electromagnetic valve, 27-A steam trap, 28-F stop valve, 29-B drain valve, 30-C stop valve, 31-E stop valve, 32-D stop valve, 33-C drain valve and 34-heat preservation curtain.

The invention is further described with reference to the following figures and detailed description.

Detailed Description

Example 1 of the invention: the utility model provides an online thawing apparatus of frozen coal, includes

railway track

1, 1 top of railway track is provided with fast thawing district 2, carriage heat preservation district 3 and readjusts machine 4, readjust machine 4 and arrange railway track 1's tip in, readjust machine 4 and be close to in carriage heat preservation district 3, be provided with steam source pipeline 5 between fast thawing district 2 and the carriage heat preservation district 3, be provided with thawing system 6 in the fast thawing district 2, carriage heat preservation district 3 includes carriage heating heat preservation canopy 7 and

steam heating system

8, 6 and 5 pipe connection of steam source pipeline of thawing system,

steam heating system

8 and 5 pipe connection of steam source pipeline.

Example 2 of the invention: an online frozen coal thawing device comprises a railway track 1, wherein a quick thawing area 2, a carriage heat preservation area 3 and a reconditioning machine 4 are arranged above the railway track 1, the reconditioning machine 4 is arranged at the end part of the railway track 1, the reconditioning machine 4 is close to the carriage heat preservation area 3, a steam source pipeline 5 is arranged between the quick thawing area 2 and the carriage heat preservation area 3, a thawing system 6 is arranged in the quick thawing area 2, the carriage heat preservation area 3 comprises a carriage heating heat preservation shed 7 and a steam heating system 8, the thawing system 6 is in pipeline connection with the steam source pipeline 5, and the steam heating system 8 is in pipeline connection with the steam source pipeline 5; thawing system 6 includes that A supplies vapour pipeline 9 and air injection system 10, air injection system 10 supplies vapour pipeline 9 and vapour source pipeline 5 to be connected through A, and steam heating system 8 includes that B supplies vapour pipeline 11 and steam heating pipeline 12, steam heating pipeline 12 supplies vapour pipeline 11 and vapour source pipeline 5 to be connected through B, is provided with fin 13 on steam heating pipeline 12's the part, and carriage heating heat preservation canopy 7 is arranged in to the part that is provided with fin 13 on steam heating pipeline 12, and air injection system 10 includes that A steam pipeline 14, horizontal nozzle subassembly 15, B steam pipeline 16 and perpendicular nozzle assembly 17, and B steam pipeline 16 connects in A steam pipeline 14, and A steam pipeline 14 connects in A supplies vapour pipeline 9, and horizontal nozzle assembly 15 arranges A steam pipeline 14 in, and perpendicular nozzle assembly 17 arranges in on B steam pipeline 16.

Example 3 of the invention: an online frozen coal thawing device comprises a railway track 1, wherein a quick thawing area 2, a carriage heat preservation area 3 and a reconditioning machine 4 are arranged above the railway track 1, the reconditioning machine 4 is arranged at the end part of the railway track 1, the reconditioning machine 4 is close to the carriage heat preservation area 3, a steam source pipeline 5 is arranged between the quick thawing area 2 and the carriage heat preservation area 3, a thawing system 6 is arranged in the quick thawing area 2, the carriage heat preservation area 3 comprises a carriage heating heat preservation shed 7 and a steam heating system 8, the thawing system 6 is in pipeline connection with the steam source pipeline 5, and the steam heating system 8 is in pipeline connection with the steam source pipeline 5; the thawing system 6 comprises an A steam supply pipeline 9 and a gas injection system 10, the gas injection system 10 is connected with a steam source pipeline 5 through the A steam supply pipeline 9, the steam heating system 8 comprises a B steam supply pipeline 11 and a steam heating pipeline 12, the steam heating pipeline 12 is connected with the steam source pipeline 5 through the B steam supply pipeline 11, a fin 13 is arranged on one part of the steam heating pipeline 12, which is provided with the fin 13, is arranged in the carriage heating heat preservation shed 7, the gas injection system 10 comprises an A steam pipeline 14, a horizontal nozzle assembly 15, a B steam pipeline 16 and a vertical nozzle assembly 17, the B steam pipeline 16 is connected with the A steam pipeline 14, the A steam pipeline 14 is connected with the A steam supply pipeline 9, the horizontal nozzle assembly 15 is arranged on the A steam pipeline 14, and the vertical nozzle assembly 17 is arranged on the B steam pipeline 16; the thawing system 6 further comprises a photoelectric detector group 18, a controller 19 and an audible and visual alarm 20, the controller 19 is connected to the A steam supply pipeline 9, the photoelectric detector group 18 is connected to the controller 19, and the audible and visual alarm 20 is connected to the controller 19.

Example 4 of the invention: an online frozen coal thawing device comprises a railway track 1, wherein a quick thawing area 2, a carriage heat preservation area 3 and a reconditioning machine 4 are arranged above the railway track 1, the reconditioning machine 4 is arranged at the end part of the railway track 1, the reconditioning machine 4 is close to the carriage heat preservation area 3, a steam source pipeline 5 is arranged between the quick thawing area 2 and the carriage heat preservation area 3, a thawing system 6 is arranged in the quick thawing area 2, the carriage heat preservation area 3 comprises a carriage heating heat preservation shed 7 and a steam heating system 8, the thawing system 6 is in pipeline connection with the steam source pipeline 5, and the steam heating system 8 is in pipeline connection with the steam source pipeline 5; the thawing system 6 comprises an A steam supply pipeline 9 and a gas injection system 10, the gas injection system 10 is connected with a steam source pipeline 5 through the A steam supply pipeline 9, the steam heating system 8 comprises a B steam supply pipeline 11 and a steam heating pipeline 12, the steam heating pipeline 12 is connected with the steam source pipeline 5 through the B steam supply pipeline 11, a fin 13 is arranged on one part of the steam heating pipeline 12, which is provided with the fin 13, is arranged in the carriage heating heat preservation shed 7, the gas injection system 10 comprises an A steam pipeline 14, a horizontal nozzle assembly 15, a B steam pipeline 16 and a vertical nozzle assembly 17, the B steam pipeline 16 is connected with the A steam pipeline 14, the A steam pipeline 14 is connected with the A steam supply pipeline 9, the horizontal nozzle assembly 15 is arranged on the A steam pipeline 14, and the vertical nozzle assembly 17 is arranged on the B steam pipeline 16; the thawing system 6 further comprises a photoelectric detector group 18, a controller 19 and an audible and visual alarm 20, wherein the controller 19 is connected to the steam supply pipeline A9, the photoelectric detector group 18 is connected to the controller 19, and the audible and visual alarm 20 is connected to the controller 19; the other part of the steam heating pipeline 12, which is arranged outside the carriage heating heat preservation shed 7, is sequentially provided with a pressure gauge 21, a thermometer 22 and a steam trap 23, the steam trap 23 is close to the reconditioning machine 4, and the pressure gauge 21 and the thermometer 22 are arranged close to the B steam supply pipeline 11.

Example 5 of the invention: an online frozen coal thawing device comprises a railway track 1, wherein a quick thawing area 2, a carriage heat preservation area 3 and a reconditioning machine 4 are arranged above the railway track 1, the reconditioning machine 4 is arranged at the end part of the railway track 1, the reconditioning machine 4 is close to the carriage heat preservation area 3, a steam source pipeline 5 is arranged between the quick thawing area 2 and the carriage heat preservation area 3, a thawing system 6 is arranged in the quick thawing area 2, the carriage heat preservation area 3 comprises a carriage heating heat preservation shed 7 and a steam heating system 8, the thawing system 6 is in pipeline connection with the steam source pipeline 5, and the steam heating system 8 is in pipeline connection with the steam source pipeline 5; the thawing system 6 comprises an A steam supply pipeline 9 and a gas injection system 10, the gas injection system 10 is connected with a steam source pipeline 5 through the A steam supply pipeline 9, the steam heating system 8 comprises a B steam supply pipeline 11 and a steam heating pipeline 12, the steam heating pipeline 12 is connected with the steam source pipeline 5 through the B steam supply pipeline 11, a fin 13 is arranged on one part of the steam heating pipeline 12, which is provided with the fin 13, is arranged in the carriage heating heat preservation shed 7, the gas injection system 10 comprises an A steam pipeline 14, a horizontal nozzle assembly 15, a B steam pipeline 16 and a vertical nozzle assembly 17, the B steam pipeline 16 is connected with the A steam pipeline 14, the A steam pipeline 14 is connected with the A steam supply pipeline 9, the horizontal nozzle assembly 15 is arranged on the A steam pipeline 14, and the vertical nozzle assembly 17 is arranged on the B steam pipeline 16; the thawing system 6 further comprises a photoelectric detector group 18, a controller 19 and an audible and visual alarm 20, wherein the controller 19 is connected to the steam supply pipeline A9, the photoelectric detector group 18 is connected to the controller 19, and the audible and visual alarm 20 is connected to the controller 19; the other part of the steam heating pipeline 12, which is arranged outside the carriage heating heat preservation shed 7, is sequentially provided with a pressure gauge 21, a thermometer 22 and a steam trap 23, the steam trap 23 is close to the reconditioning machine 4, and the pressure gauge 21 and the thermometer 22 are both arranged close to the B steam supply pipeline 11; the steam source pipeline 5 is provided with an A stop valve 24, the A steam supply pipeline 9 is sequentially provided with a B stop valve 25, an electromagnetic valve 26 and an A drain valve 27, the controller 19 is connected to the electromagnetic valve 26, and the B steam supply pipeline 11 is sequentially provided with an F stop valve 28 and a B drain valve 29.

Example 6 of the invention: an online frozen coal thawing device comprises a railway track 1, wherein a quick thawing area 2, a carriage heat preservation area 3 and a reconditioning machine 4 are arranged above the railway track 1, the reconditioning machine 4 is arranged at the end part of the railway track 1, the reconditioning machine 4 is close to the carriage heat preservation area 3, a steam source pipeline 5 is arranged between the quick thawing area 2 and the carriage heat preservation area 3, a thawing system 6 is arranged in the quick thawing area 2, the carriage heat preservation area 3 comprises a carriage heating heat preservation shed 7 and a steam heating system 8, the thawing system 6 is in pipeline connection with the steam source pipeline 5, and the steam heating system 8 is in pipeline connection with the steam source pipeline 5; the thawing system 6 comprises an A steam supply pipeline 9 and a gas injection system 10, the gas injection system 10 is connected with a steam source pipeline 5 through the A steam supply pipeline 9, the steam heating system 8 comprises a B steam supply pipeline 11 and a steam heating pipeline 12, the steam heating pipeline 12 is connected with the steam source pipeline 5 through the B steam supply pipeline 11, a fin 13 is arranged on one part of the steam heating pipeline 12, which is provided with the fin 13, is arranged in the carriage heating heat preservation shed 7, the gas injection system 10 comprises an A steam pipeline 14, a horizontal nozzle assembly 15, a B steam pipeline 16 and a vertical nozzle assembly 17, the B steam pipeline 16 is connected with the A steam pipeline 14, the A steam pipeline 14 is connected with the A steam supply pipeline 9, the horizontal nozzle assembly 15 is arranged on the A steam pipeline 14, and the vertical nozzle assembly 17 is arranged on the B steam pipeline 16; the thawing system 6 further comprises a photoelectric detector group 18, a controller 19 and an audible and visual alarm 20, wherein the controller 19 is connected to the steam supply pipeline A9, the photoelectric detector group 18 is connected to the controller 19, and the audible and visual alarm 20 is connected to the controller 19; the other part of the steam heating pipeline 12, which is arranged outside the carriage heating heat preservation shed 7, is sequentially provided with a pressure gauge 21, a thermometer 22 and a steam trap 23, the steam trap 23 is close to the reconditioning machine 4, and the pressure gauge 21 and the thermometer 22 are both arranged close to the B steam supply pipeline 11; the steam source pipeline 5 is provided with an A stop valve 24, the A steam supply pipeline 9 is sequentially provided with a B stop valve 25, an electromagnetic valve 26 and an A drain valve 27, the controller 19 is connected to the electromagnetic valve 26, and the B steam supply pipeline 11 is sequentially provided with an F stop valve 28 and a B drain valve 29; the A steam pipeline 14 is provided with a C stop valve 30, and the B steam pipeline 16 is provided with an E stop valve 31.

Example 7 of the invention: an online frozen coal thawing device comprises a railway track 1, wherein a quick thawing area 2, a carriage heat preservation area 3 and a reconditioning machine 4 are arranged above the railway track 1, the reconditioning machine 4 is arranged at the end part of the railway track 1, the reconditioning machine 4 is close to the carriage heat preservation area 3, a steam source pipeline 5 is arranged between the quick thawing area 2 and the carriage heat preservation area 3, a thawing system 6 is arranged in the quick thawing area 2, the carriage heat preservation area 3 comprises a carriage heating heat preservation shed 7 and a steam heating system 8, the thawing system 6 is in pipeline connection with the steam source pipeline 5, and the steam heating system 8 is in pipeline connection with the steam source pipeline 5; the thawing system 6 comprises an A steam supply pipeline 9 and a gas injection system 10, the gas injection system 10 is connected with a steam source pipeline 5 through the A steam supply pipeline 9, the steam heating system 8 comprises a B steam supply pipeline 11 and a steam heating pipeline 12, the steam heating pipeline 12 is connected with the steam source pipeline 5 through the B steam supply pipeline 11, a fin 13 is arranged on one part of the steam heating pipeline 12, which is provided with the fin 13, is arranged in the carriage heating heat preservation shed 7, the gas injection system 10 comprises an A steam pipeline 14, a horizontal nozzle assembly 15, a B steam pipeline 16 and a vertical nozzle assembly 17, the B steam pipeline 16 is connected with the A steam pipeline 14, the A steam pipeline 14 is connected with the A steam supply pipeline 9, the horizontal nozzle assembly 15 is arranged on the A steam pipeline 14, and the vertical nozzle assembly 17 is arranged on the B steam pipeline 16; the thawing system 6 further comprises a photoelectric detector group 18, a controller 19 and an audible and visual alarm 20, wherein the controller 19 is connected to the steam supply pipeline A9, the photoelectric detector group 18 is connected to the controller 19, and the audible and visual alarm 20 is connected to the controller 19; the other part of the steam heating pipeline 12, which is arranged outside the carriage heating heat preservation shed 7, is sequentially provided with a pressure gauge 21, a thermometer 22 and a steam trap 23, the steam trap 23 is close to the reconditioning machine 4, and the pressure gauge 21 and the thermometer 22 are both arranged close to the B steam supply pipeline 11; the steam source pipeline 5 is provided with an A stop valve 24, the A steam supply pipeline 9 is sequentially provided with a B stop valve 25, an electromagnetic valve 26 and an A drain valve 27, the controller 19 is connected to the electromagnetic valve 26, and the B steam supply pipeline 11 is sequentially provided with an F stop valve 28 and a B drain valve 29; the A steam pipeline 14 is provided with a C stop valve 30, and the B steam pipeline 16 is provided with an E stop valve 31; the steam heating pipeline 12 is further provided with a D stop valve 32, the D stop valve 32 is arranged between the pressure gauge 21 and the B steam supply pipeline 11, the other part of the steam heating pipeline 12, which is arranged outside the compartment heating heat preservation shed 7, is further provided with a C drain valve 33, and the C drain valve 33 is arranged at one end close to the steam trap 23.

Example 8 of the invention: an online frozen coal thawing device comprises a railway track 1, wherein a quick thawing area 2, a carriage heat preservation area 3 and a reconditioning machine 4 are arranged above the railway track 1, the reconditioning machine 4 is arranged at the end part of the railway track 1, the reconditioning machine 4 is close to the carriage heat preservation area 3, a steam source pipeline 5 is arranged between the quick thawing area 2 and the carriage heat preservation area 3, a thawing system 6 is arranged in the quick thawing area 2, the carriage heat preservation area 3 comprises a carriage heating heat preservation shed 7 and a steam heating system 8, the thawing system 6 is in pipeline connection with the steam source pipeline 5, and the steam heating system 8 is in pipeline connection with the steam source pipeline 5; the thawing system 6 comprises an A steam supply pipeline 9 and a gas injection system 10, the gas injection system 10 is connected with a steam source pipeline 5 through the A steam supply pipeline 9, the steam heating system 8 comprises a B steam supply pipeline 11 and a steam heating pipeline 12, the steam heating pipeline 12 is connected with the steam source pipeline 5 through the B steam supply pipeline 11, a fin 13 is arranged on one part of the steam heating pipeline 12, which is provided with the fin 13, is arranged in the carriage heating heat preservation shed 7, the gas injection system 10 comprises an A steam pipeline 14, a horizontal nozzle assembly 15, a B steam pipeline 16 and a vertical nozzle assembly 17, the B steam pipeline 16 is connected with the A steam pipeline 14, the A steam pipeline 14 is connected with the A steam supply pipeline 9, the horizontal nozzle assembly 15 is arranged on the A steam pipeline 14, and the vertical nozzle assembly 17 is arranged on the B steam pipeline 16; the thawing system 6 further comprises a photoelectric detector group 18, a controller 19 and an audible and visual alarm 20, wherein the controller 19 is connected to the steam supply pipeline A9, the photoelectric detector group 18 is connected to the controller 19, and the audible and visual alarm 20 is connected to the controller 19; the other part of the steam heating pipeline 12, which is arranged outside the carriage heating heat preservation shed 7, is sequentially provided with a pressure gauge 21, a thermometer 22 and a steam trap 23, the steam trap 23 is close to the reconditioning machine 4, and the pressure gauge 21 and the thermometer 22 are both arranged close to the B steam supply pipeline 11; the steam source pipeline 5 is provided with an A stop valve 24, the A steam supply pipeline 9 is sequentially provided with a B stop valve 25, an electromagnetic valve 26 and an A drain valve 27, the controller 19 is connected to the electromagnetic valve 26, and the B steam supply pipeline 11 is sequentially provided with an F stop valve 28 and a B drain valve 29; the A steam pipeline 14 is provided with a C stop valve 30, and the B steam pipeline 16 is provided with an E stop valve 31; the steam heating pipeline 12 is also provided with a D stop valve 32, the D stop valve 32 is arranged between the pressure gauge 21 and the B steam supply pipeline 11, the other part of the steam heating pipeline 12, which is arranged outside the compartment heating heat preservation shed 7, is also provided with a C drain valve 33, and the C drain valve 33 is arranged at one end close to the steam trap 23; and heat preservation curtains 34 are arranged at two ends of the carriage heating and heat preservation shed 7.

An online unfreezing method for frozen coal comprises the following steps:

s1, before the train carriage for transporting the frozen coal enters the rapid thawing zone 2, the audible and visual alarm 20 is started and various pipelines and equipment are checked, so that the accumulated water in the pipelines is prevented from being vaporized by heat to cause pipeline vibration damage, the device is prompted to be put into operation by workers, the workers are prevented from entering the air injection system 10 area by mistake, and the safety is ensured;

s2, closing the C stop valve 30, the E stop valve 31 and the D stop valve 32, opening the A drain valve 27 and the B drain valve 29, opening the A stop valve 24, the B stop valve 25 and the F stop valve 28, opening the electromagnetic valve 26 by the controller 19 in a manual control mode, and draining and heating the A steam supply pipeline 9 of the rapid thawing area 2 and the B steam supply pipeline 11 of the compartment heat preservation area 3; putting a steam trap 23, opening a C steam trap 33, opening a D stop valve 32, starting heating of the compartment heat preservation area 3, opening a C stop valve 30, and enabling the quick thawing area 2 to operate;

s3, adjusting the opening and closing state of the E stop valve 31 according to the type of the train carriage, and keeping the closing state of the E stop valve 31 if the open wagon carriage is driven into the quick thawing area 2;

s4, closing the A steam trap 27 and the B steam trap 29; adjusting the opening degree of the stop valve A24 according to the indication of the pressure gauge 21 and the thermometer 22; the controller 19 is set in an automatic control mode, a frozen coal train carriage drives into the fast thawing zone 2, the photoelectric detector group 18 sends out a corresponding signal when detecting that the frozen coal train carriage passes through, the controller 19 receives the signal, logically judges that the frozen coal train carriage passes through the fast thawing zone 2, starts the audible and visual alarm 20 to prompt a worker that the air injection system 10 is put into operation, controls the electromagnetic valve 26 to be opened, and the horizontal nozzle assembly 15 keeps a steam injection state when the open wagon carriage passes through;

s5, the frozen coal train carriage in the fast thawing area 2 enters the carriage heat preservation area 3 for thawing and heat preservation, and is dragged by the readjusting machine 4 to enter the unloading operation procedure;

s6, the frozen coal train carriage is driven away from the fast thawing zone 2, the photoelectric detector group 18 detects that the non-frozen coal train carriage passes through and sends out a corresponding signal, the controller 19 receives the signal, the non-frozen coal train carriage is judged to pass through the fast thawing zone 2 according to logic, the electromagnetic valve 26 is controlled to be closed, the horizontal nozzle assembly 15 and the vertical nozzle assembly 17 stop steam ejection, and the audible and visual alarm 20 stops alarming;

and S7, closing the stop valve A24, the stop valve B25, the stop valve F28, the stop valve C30 and the stop valve D32 after all the frozen coal open wagon compartments are frozen, opening the drain valve A27, the drain valve B29 and the drain valve C33, manually closing the electromagnetic valve 26 by the controller 19, and stopping the operation of the rapid thawing area 2 and the compartment heat preservation area 3.

Example 9 of the invention: an online frozen coal thawing device comprises a railway track 1, wherein a quick thawing area 2, a carriage heat preservation area 3 and a reconditioning machine 4 are arranged above the railway track 1, the reconditioning machine 4 is arranged at the end part of the railway track 1, the reconditioning machine 4 is close to the carriage heat preservation area 3, a steam source pipeline 5 is arranged between the quick thawing area 2 and the carriage heat preservation area 3, a thawing system 6 is arranged in the quick thawing area 2, the carriage heat preservation area 3 comprises a carriage heating heat preservation shed 7 and a steam heating system 8, the thawing system 6 is in pipeline connection with the steam source pipeline 5, and the steam heating system 8 is in pipeline connection with the steam source pipeline 5; the thawing system 6 comprises an A steam supply pipeline 9 and a gas injection system 10, the gas injection system 10 is connected with a steam source pipeline 5 through the A steam supply pipeline 9, the steam heating system 8 comprises a B steam supply pipeline 11 and a steam heating pipeline 12, the steam heating pipeline 12 is connected with the steam source pipeline 5 through the B steam supply pipeline 11, a fin 13 is arranged on one part of the steam heating pipeline 12, which is provided with the fin 13, is arranged in the carriage heating heat preservation shed 7, the gas injection system 10 comprises an A steam pipeline 14, a horizontal nozzle assembly 15, a B steam pipeline 16 and a vertical nozzle assembly 17, the B steam pipeline 16 is connected with the A steam pipeline 14, the A steam pipeline 14 is connected with the A steam supply pipeline 9, the horizontal nozzle assembly 15 is arranged on the A steam pipeline 14, and the vertical nozzle assembly 17 is arranged on the B steam pipeline 16; the thawing system 6 further comprises a photoelectric detector group 18, a controller 19 and an audible and visual alarm 20, wherein the controller 19 is connected to the steam supply pipeline A9, the photoelectric detector group 18 is connected to the controller 19, and the audible and visual alarm 20 is connected to the controller 19; the other part of the steam heating pipeline 12, which is arranged outside the carriage heating heat preservation shed 7, is sequentially provided with a pressure gauge 21, a thermometer 22 and a steam trap 23, the steam trap 23 is close to the reconditioning machine 4, and the pressure gauge 21 and the thermometer 22 are both arranged close to the B steam supply pipeline 11; the steam source pipeline 5 is provided with an A stop valve 24, the A steam supply pipeline 9 is sequentially provided with a B stop valve 25, an electromagnetic valve 26 and an A drain valve 27, the controller 19 is connected to the electromagnetic valve 26, and the B steam supply pipeline 11 is sequentially provided with an F stop valve 28 and a B drain valve 29; the A steam pipeline 14 is provided with a C stop valve 30, and the B steam pipeline 16 is provided with an E stop valve 31; the steam heating pipeline 12 is also provided with a D stop valve 32, the D stop valve 32 is arranged between the pressure gauge 21 and the B steam supply pipeline 11, the other part of the steam heating pipeline 12, which is arranged outside the compartment heating heat preservation shed 7, is also provided with a C drain valve 33, and the C drain valve 33 is arranged at one end close to the steam trap 23; and heat preservation curtains 34 are arranged at two ends of the carriage heating and heat preservation shed 7.

An online unfreezing method for frozen coal comprises the following steps:

s3, adjusting the opening and closing state of the E stop valve 31 according to the type of the train carriage, keeping the E stop valve 31 in a closed state if the train carriage is an open wagon carriage which is driven into the quick thawing area 2, and opening the E stop valve 31 if the train carriage is a K-type hopper wagon carriage which is driven into the quick thawing area 2;

s4, closing the A steam trap 27 and the B steam trap 29; adjusting the opening degree of a stop valve A24 according to the indication of a pressure gauge 21 and a thermometer 22; the controller 19 is set in an automatic control mode, a frozen coal train carriage drives into the fast thawing zone 2, the photoelectric detector group 18 sends out a corresponding signal when detecting that the frozen coal train carriage passes through, the controller 19 receives the signal, logically judges that the frozen coal train carriage passes through the fast thawing zone 2, starts the audible and visual alarm 20 to prompt a worker that the air injection system 10 is put into operation, controls the electromagnetic valve 26 to be opened, the horizontal nozzle assembly 15 keeps a steam injection state when the open car carriage passes through, and the horizontal nozzle assembly 15 and the vertical nozzle assembly 17 keep the steam injection state when the K-shaped hopper car carriage passes through, so that the frozen coal train carriage is thawed fast;

Example 10 of the present invention: an online frozen coal thawing device comprises a railway track 1, wherein a quick thawing area 2, a carriage heat preservation area 3 and a reconditioning machine 4 are arranged above the railway track 1, the reconditioning machine 4 is arranged at the end part of the railway track 1, the reconditioning machine 4 is close to the carriage heat preservation area 3, a steam source pipeline 5 is arranged between the quick thawing area 2 and the carriage heat preservation area 3, a thawing system 6 is arranged in the quick thawing area 2, the carriage heat preservation area 3 comprises a carriage heating heat preservation shed 7 and a steam heating system 8, the thawing system 6 is in pipeline connection with the steam source pipeline 5, the steam heating system 8 is in pipeline connection with the steam source pipeline 5, and the thawing system 6 and the steam heating system 8 are at least provided with one group; the thawing system 6 comprises an A steam supply pipeline 9 and a gas injection system 10, the gas injection system 10 is connected with a steam source pipeline 5 through the A steam supply pipeline 9, the steam heating system 8 comprises a B steam supply pipeline 11 and a steam heating pipeline 12, the steam heating pipeline 12 is connected with the steam source pipeline 5 through the B steam supply pipeline 11, a fin 13 is arranged on one part of the steam heating pipeline 12, which is provided with the fin 13, is arranged in the carriage heating heat preservation shed 7, the gas injection system 10 comprises an A steam pipeline 14, a horizontal nozzle assembly 15, a B steam pipeline 16 and a vertical nozzle assembly 17, the B steam pipeline 16 is connected with the A steam pipeline 14, the A steam pipeline 14 is connected with the A steam supply pipeline 9, the horizontal nozzle assembly 15 is arranged on the A steam pipeline 14, and the vertical nozzle assembly 17 is arranged on the B steam pipeline 16; the thawing system 6 further comprises a photoelectric detector group 18, a controller 19 and an audible and visual alarm 20, wherein the controller 19 is connected to the steam supply pipeline A9, the photoelectric detector group 18 is connected to the controller 19, and the audible and visual alarm 20 is connected to the controller 19; the other part of the steam heating pipeline 12, which is arranged outside the carriage heating heat preservation shed 7, is sequentially provided with a pressure gauge 21, a thermometer 22 and a steam trap 23, the steam trap 23 is close to the reconditioning machine 4, and the pressure gauge 21 and the thermometer 22 are both arranged close to the B steam supply pipeline 11; the steam source pipeline 5 is provided with an A stop valve 24, the A steam supply pipeline 9 is sequentially provided with a B stop valve 25, an electromagnetic valve 26 and an A drain valve 27, the controller 19 is connected to the electromagnetic valve 26, and the B steam supply pipeline 11 is sequentially provided with an F stop valve 28 and a B drain valve 29; the A steam pipeline 14 is provided with a C stop valve 30, and the B steam pipeline 16 is provided with an E stop valve 31; the steam heating pipeline 12 is also provided with a D stop valve 32, the D stop valve 32 is arranged between the pressure gauge 21 and the B steam supply pipeline 11, the other part of the steam heating pipeline 12, which is arranged outside the compartment heating heat preservation shed 7, is also provided with a C drain valve 33, and the C drain valve 33 is arranged at one end close to the steam trap 23; thermal insulation curtains 34 are arranged at two ends of the carriage heating thermal insulation shed 7, and the carriage heating thermal insulation shed 7 and the thermal insulation curtains 34 can be made of flexible thermal insulation materials.

An online unfreezing method for frozen coal comprises the following steps:

Example 11 of the invention: an online frozen coal thawing device comprises a railway track 1, wherein a quick thawing area 2, a carriage heat preservation area 3 and a reconditioning machine 4 are arranged above the railway track 1, the reconditioning machine 4 is arranged at the end part of the railway track 1, the reconditioning machine 4 is close to the carriage heat preservation area 3, a steam source pipeline 5 is arranged between the quick thawing area 2 and the carriage heat preservation area 3, a thawing system 6 is arranged in the quick thawing area 2, the carriage heat preservation area 3 comprises a carriage heating heat preservation shed 7 and a steam heating system 8, the thawing system 6 is in pipeline connection with the steam source pipeline 5, the steam heating system 8 is in pipeline connection with the steam source pipeline 5, and the thawing system 6 and the steam heating system 8 are arranged in a group; the thawing system 6 comprises an A steam supply pipeline 9 and a gas injection system 10, the gas injection system 10 is connected with a steam source pipeline 5 through the A steam supply pipeline 9, the steam heating system 8 comprises a B steam supply pipeline 11 and a steam heating pipeline 12, the steam heating pipeline 12 is connected with the steam source pipeline 5 through the B steam supply pipeline 11, a fin 13 is arranged on one part of the steam heating pipeline 12, which is provided with the fin 13, is arranged in the carriage heating heat preservation shed 7, the gas injection system 10 comprises an A steam pipeline 14, a horizontal nozzle assembly 15, a B steam pipeline 16 and a vertical nozzle assembly 17, the B steam pipeline 16 is connected with the A steam pipeline 14, the A steam pipeline 14 is connected with the A steam supply pipeline 9, the horizontal nozzle assembly 15 is arranged on the A steam pipeline 14, and the vertical nozzle assembly 17 is arranged on the B steam pipeline 16; the thawing system 6 further comprises a photoelectric detector group 18, a controller 19 and an audible and visual alarm 20, wherein the controller 19 is connected to the steam supply pipeline A9, the photoelectric detector group 18 is connected to the controller 19, and the audible and visual alarm 20 is connected to the controller 19; the other part of the steam heating pipeline 12, which is arranged outside the carriage heating heat preservation shed 7, is sequentially provided with a pressure gauge 21, a thermometer 22 and a steam trap 23, the steam trap 23 is close to the reconditioning machine 4, and the pressure gauge 21 and the thermometer 22 are both arranged close to the B steam supply pipeline 11; the steam source pipeline 5 is provided with an A stop valve 24, the A steam supply pipeline 9 is sequentially provided with a B stop valve 25, an electromagnetic valve 26 and an A drain valve 27, the controller 19 is connected to the electromagnetic valve 26, and the B steam supply pipeline 11 is sequentially provided with an F stop valve 28 and a B drain valve 29; the A steam pipeline 14 is provided with a C stop valve 30, and the B steam pipeline 16 is provided with an E stop valve 31; the steam heating pipeline 12 is also provided with a D stop valve 32, the D stop valve 32 is arranged between the pressure gauge 21 and the B steam supply pipeline 11, the other part of the steam heating pipeline 12, which is arranged outside the compartment heating heat preservation shed 7, is also provided with a C drain valve 33, and the C drain valve 33 is arranged at one end close to the steam trap 23; thermal insulation curtains 34 are arranged at two ends of the carriage heating thermal insulation shed 7, and the carriage heating thermal insulation shed 7 and the thermal insulation curtains 34 can be made of flexible thermal insulation materials.

An online unfreezing method for frozen coal comprises the following steps:

Example 12 of the present invention: an online frozen coal thawing device comprises a railway track 1, wherein a fast thawing area 2, a carriage heat preservation area 3 and a reconditioning machine 4 are arranged above the railway track 1, the reconditioning machine 4 is arranged at the end part of the railway track 1, the reconditioning machine 4 is close to the carriage heat preservation area 3, a steam source pipeline 5 is arranged between the fast thawing area 2 and the carriage heat preservation area 3, a thawing system 6 is arranged in the fast thawing area 2, the carriage heat preservation area 3 comprises a carriage heating heat preservation shed 7 and a steam heating system 8, the thawing system 6 is in pipeline connection with the steam source pipeline 5, the steam heating system 8 is in pipeline connection with the steam source pipeline 5, the thawing system 6 and the steam heating system 8 are provided with two groups, the carriage heating heat preservation shed 7 is provided with flexible heat preservation curtains with fixed upper ends along the two sides of the width direction of the railway track 1, the flexible heat preservation curtains can be rolled up without influencing the unloading inspection and the reconditioning operation of a tractor arm of a worker, the use adaptability is good; the thawing system 6 comprises an A steam supply pipeline 9 and a gas injection system 10, the gas injection system 10 is connected with a steam source pipeline 5 through the A steam supply pipeline 9, the steam heating system 8 comprises a B steam supply pipeline 11 and a steam heating pipeline 12, the steam heating pipeline 12 is connected with the steam source pipeline 5 through the B steam supply pipeline 11, a fin 13 is arranged on one part of the steam heating pipeline 12, which is provided with the fin 13, is arranged in the carriage heating heat preservation shed 7, the gas injection system 10 comprises an A steam pipeline 14, a horizontal nozzle assembly 15, a B steam pipeline 16 and a vertical nozzle assembly 17, the B steam pipeline 16 is connected with the A steam pipeline 14, the A steam pipeline 14 is connected with the A steam supply pipeline 9, the horizontal nozzle assembly 15 is arranged on the A steam pipeline 14, and the vertical nozzle assembly 17 is arranged on the B steam pipeline 16; the thawing system 6 further comprises a photoelectric detector group 18, a controller 19 and an audible and visual alarm 20, wherein the controller 19 is connected to the steam supply pipeline A9, the photoelectric detector group 18 is connected to the controller 19, and the audible and visual alarm 20 is connected to the controller 19; the other part of the steam heating pipeline 12, which is arranged outside the carriage heating heat preservation shed 7, is sequentially provided with a pressure gauge 21, a thermometer 22 and a steam trap 23, the steam trap 23 is close to the reconditioning machine 4, and the pressure gauge 21 and the thermometer 22 are both arranged close to the B steam supply pipeline 11; the steam source pipeline 5 is provided with an A stop valve 24, the A steam supply pipeline 9 is sequentially provided with a B stop valve 25, an electromagnetic valve 26 and an A drain valve 27, the controller 19 is connected to the electromagnetic valve 26, and the B steam supply pipeline 11 is sequentially provided with an F stop valve 28 and a B drain valve 29; the A steam pipeline 14 is provided with a C stop valve 30, and the B steam pipeline 16 is provided with an E stop valve 31; the steam heating pipeline 12 is also provided with a D stop valve 32, the D stop valve 32 is arranged between the pressure gauge 21 and the B steam supply pipeline 11, the other part of the steam heating pipeline 12, which is arranged outside the compartment heating heat preservation shed 7, is also provided with a C drain valve 33, and the C drain valve 33 is arranged at one end close to the steam trap 23; thermal insulation curtains 34 are arranged at two ends of the carriage heating thermal insulation shed 7, and the carriage heating thermal insulation shed 7 and the thermal insulation curtains 34 can be made of flexible thermal insulation materials.

An online unfreezing method for frozen coal comprises the following steps:

The working principle of one embodiment of the invention is as follows: when the rapid thawing device works, before a train carriage for transporting frozen coal enters the rapid thawing zone 2, the audible and visual alarm 20 is started, various pipelines and equipment are checked, the accumulated water in the pipelines is prevented from being vaporized and vibrated to be damaged after being heated, the device is prompted to be put into operation by workers, the workers are prevented from entering the air injection system 10 area by mistake, and the safety is ensured; closing a C stop valve 30, an E stop valve 31 and a D stop valve 32, opening a drain valve 27 and a B drain valve 29, opening an A stop valve 24, a B stop valve 25 and an F stop valve 28, opening an electromagnetic valve 26 by a controller 19 in a manual control mode, and draining and warming the A steam supply pipeline 9 of the quick thawing area 2 and the B steam supply pipeline 11 of the compartment heat preservation area 3; putting a steam trap 23, opening a C steam trap 33, opening a D stop valve 32, starting heating of the compartment heat preservation area 3, opening a C stop valve 30, and enabling the quick thawing area 2 to operate; and adjusting the opening and closing state of the E stop valve 31 according to the type of the railway carriage, keeping the E stop valve 31 in a closed state if the railway carriage is an open railway carriage entering the quick thawing zone 2, and opening the E stop valve 31 if the railway carriage is a K-type hopper railway carriage entering the quick thawing zone 2. Closing the A trap 27 and the B trap 29; adjusting the opening degree of the stop valve A24 according to the indication of the pressure gauge 21 and the thermometer 22; the controller 19 is set in an automatic control mode, a frozen coal train carriage drives into the fast thawing zone 2, the photoelectric detector group 18 sends out a corresponding signal when detecting that the frozen coal train carriage passes through, the controller 19 receives the signal, logically judges that the frozen coal train carriage passes through the fast thawing zone 2, starts the audible and visual alarm 20 to prompt a worker that the air injection system 10 is put into operation, controls the electromagnetic valve 26 to be opened, the horizontal nozzle assembly 15 keeps a steam injection state when the open car carriage passes through, and the horizontal nozzle assembly 15 and the vertical nozzle assembly 17 keep the steam injection state when the K-shaped hopper car carriage passes through, so that the frozen coal train carriage is thawed fast; the frozen coal train carriage passing through the quick thawing area 2 enters a carriage heat preservation area 3 for thawing and heat preservation, and is dragged by a readjusting machine 4 to enter an unloading operation procedure; the frozen coal train carriage drives away from the fast thawing zone 2, the photoelectric detector group 18 detects that no frozen coal train carriage passes through and sends out a corresponding signal, the controller 19 receives the signal, the situation that no carriage passes through the fast thawing zone 2 is judged according to logic, the electromagnetic valve 26 is controlled to be closed, the horizontal nozzle assembly 15 and the vertical nozzle assembly 17 stop steam spraying, and the audible and visual alarm 20 stops alarming; and after all the frozen coal train carriages are frozen, closing the stop valve A24, the stop valve B25, the stop valve F28, the stop valve C30 and the stop valve D32, opening the drain valve A27, the drain valve B29 and the drain valve C33, manually closing the electromagnetic valve 26 by the controller 19, and stopping the operation of the rapid thawing area 2 and the carriage heat preservation area 3.

Claims

1. The utility model provides an online thawing apparatus of frozen coal, includes railway track (1), its characterized in that, railway track (1) top is provided with fast thawing district (2), carriage heat preservation district (3) and readjust machine (4), readjust machine (4) and arrange the tip of railway track (1) in, readjust machine (4) and be close to in carriage heat preservation district (3), be provided with between fast thawing district (2) and carriage heat preservation district (3) vapour source pipeline (5), be provided with system (6) of thawing in fast thawing district (2), carriage heat preservation district (3) are including carriage heating heat preservation canopy (7) and steam heating system (8), system (6) and vapour source pipeline (5) pipe connection unfreeze, steam heating system (8) and vapour source pipeline (5) pipe connection.

2. The frozen coal online thawing device according to claim 1, wherein the thawing system (6) comprises an A steam supply pipeline (9) and an air injection system (10), the air injection system (10) is connected with a steam source pipeline (5) through the A steam supply pipeline (9), the steam heating system (8) comprises a B steam supply pipeline (11) and a steam heating pipeline (12), the steam heating pipeline (12) is connected with the steam source pipeline (5) through the B steam supply pipeline (11), a part of the steam heating pipeline (12) is provided with fins (13), a part of the steam heating pipeline (12) provided with the fins (13) is arranged in the compartment heating greenhouse (7), the air injection system (10) comprises the A steam pipeline (14), a horizontal nozzle assembly (15), a B steam pipeline (16) and a vertical nozzle assembly (17), the B steam pipeline (16) is connected with the A steam pipeline (14), the steam pipeline A (14) is connected with the steam supply pipeline A (9), the horizontal nozzle assembly (15) is arranged on the steam pipeline A (14), and the vertical nozzle assembly (17) is arranged on the steam pipeline B (16).

3. The on-line unfreezing device for the frozen coal according to claim 2, wherein the unfreezing system (6) further comprises a photoelectric detector set (18), a controller (19) and an audible and visual alarm (20), the controller (19) is connected to the A steam supply pipeline (9), the photoelectric detector set (18) is connected to the controller (19), and the audible and visual alarm (20) is connected to the controller (19).

4. The frozen coal online thawing device according to claim 2, wherein a pressure gauge (21), a temperature gauge (22) and a steam trap (23) are sequentially arranged at another part of the steam heating pipeline (12) outside the carriage heating heat preservation shed (7), the steam trap (23) is close to the reconditioning machine (4), and the pressure gauge (21) and the temperature gauge (22) are both arranged close to the B steam supply pipeline (11).

5. The frozen coal online thawing device according to claim 3, wherein a stop valve A (24) is arranged on the steam source pipeline (5), a stop valve B (25), an electromagnetic valve (26) and a drain valve A (27) are sequentially arranged on the steam supply pipeline A (9), the controller (19) is connected to the electromagnetic valve (26), and a stop valve F (28) and a drain valve B (29) are sequentially arranged on the steam supply pipeline B (11).

6. The frozen coal online thawing apparatus according to claim 4, wherein a C stop valve (30) is provided on the A steam pipeline (14), and an E stop valve (31) is provided on the B steam pipeline (16).

7. The frozen coal online thawing device according to claim 4, wherein a D stop valve (32) is further disposed on the steam heating pipeline (12), the D stop valve (32) is disposed between the pressure gauge (21) and the B steam supply pipeline (11), a C drain valve (33) is further disposed on another portion of the steam heating pipeline (12) disposed outside the compartment heating insulation shed (7), and the C drain valve (33) is disposed at one end close to the steam trap (23).

8. The frozen coal online thawing apparatus according to claim 1, wherein both ends of the carriage heating thermal insulation shed (7) are provided with thermal insulation curtains (34).

9. The method for unfreezing the frozen coal on line is characterized by comprising the following steps of:

s1, before the train carriage for transporting the frozen coal enters the quick thawing zone (2), the audible and visual alarm (20) is started and various pipelines and equipment are checked, so that the situation that accumulated water in the pipelines is vaporized after being heated to cause pipeline vibration damage is prevented, a worker is prompted to put the device into operation, the situation that the worker mistakenly enters the air injection system (10) area is prevented, and safety is guaranteed;

s2, closing a stop valve C (30), a stop valve E (31) and a stop valve D (32), opening a drain valve A (27) and a drain valve B (29), opening a stop valve A (24), a stop valve B (25) and a stop valve F (28), opening an electromagnetic valve (26) by a controller (19) in a manual control mode, and draining and heating the steam supply pipeline A (9) of the rapid thawing area (2) and the steam supply pipeline B (11) of the compartment heat preservation area (3); putting a steam trap (23), opening a C steam trap (33), opening a D stop valve (32), starting heating of a compartment heat preservation area (3), opening a C stop valve (30), and enabling a quick thawing area (2) to operate;

s3, adjusting the opening and closing state of the E stop valve (31) according to the type of the train compartment, and keeping the closing state of the E stop valve (31) if the open wagon compartment is driven into the quick thawing area (2);

s4, closing the A steam trap (27) and the B steam trap (29); the opening degree of a stop valve A (24) is adjusted according to the indication of a pressure gauge (21) and a thermometer (22); the controller (19) is set in an automatic control mode, a frozen coal train carriage drives into the fast thawing zone (2), a photoelectric detector group (18) sends out a corresponding signal when detecting that the frozen coal train carriage passes through, the controller (19) receives the signal, logically judges that the frozen coal train carriage passes through the fast thawing zone (2), starts an audible and visual alarm (20) to prompt a worker that the air injection system (10) is put into operation, controls the opening of an electromagnetic valve (26), and when the open wagon carriage passes through, the horizontal nozzle assembly (15) keeps a steam injection state;

s5, the frozen coal train carriage passing through the quick thawing area (2) enters the carriage heat preservation area (3) for thawing and heat preservation, and is dragged by the reset machine (4) to enter the unloading operation procedure;

s6, the frozen coal train carriage is driven away from the fast thawing area (2), the photoelectric detector group (18) detects that the non-frozen coal train carriage passes through and sends out a corresponding signal, the controller (19) receives the signal, the non-frozen coal train carriage is judged to pass through the fast thawing area (2) according to logic, the electromagnetic valve (26) is controlled to be closed, the horizontal nozzle assembly (15) and the vertical nozzle assembly (17) stop steam ejection, and the audible and visual alarm (20) stops alarming;

s7, after all the frozen coal gondola car carriages are frozen, closing the A stop valve (24), the B stop valve (25), the F stop valve (28), the C stop valve (30) and the D stop valve (32), opening the A drain valve (27), the B drain valve (29) and the C drain valve (33), manually closing the controller (19) to close the electromagnetic valve (26), and stopping the operation of the rapid thawing area (2) and the carriage heat preservation area (3).

10. The method for unfreezing the frozen coal online according to the claim 9, wherein if a K-shaped hopper car body is driven into the quick unfreezing area (2), the E stop valve (31) is opened, and when the K-shaped hopper car body passes through, the horizontal nozzle assembly (15) and the vertical nozzle assembly (17) keep a steam spraying state, so that the frozen coal train car body is quickly unfrozen.