Cold test device

Abstract

The utility model discloses a cold state test device, which is characterized in that an ash inlet shell is provided with a first flue provided with an ash inlet and an ash outlet, a plurality of mounting parts are arranged in the first flue, an ash conveying part is provided with an ash conveying pipeline which is communicated with the ash inlet and conveys ash into the first flue, and an ash collecting part is arranged at the bottom of the first flue to collect falling ash; the ash outlet shell is provided with a second flue, the second flue is provided with an ash outlet connecting port and an ash treatment connecting port, the ash outlet connecting port is connected with the ash outlet, the ash treatment part is connected with the ash treatment connecting port so as to treat dust passing through the ash baffle and the second flue, and the multiple mounting parts comprise the first mounting part and the second mounting part; the first mounting parts with different heights and the second mounting parts with different heights are selected to be combined to mount the ash baffle, so that the ash baffle is mounted on the first flue at different angles, and the ash inlet shell and the ash outlet shell are transparent. The device aims at visually monitoring and simulating the state of ash in the boiler in real time and selecting the appropriate type and inclination angle of the ash baffle according to the ash blocking condition.

Description

Technical Field

[0001] The utility model relates to the technical field of power station boilers, in particular to a cold state test device. Background Art

[0002] A power plant boiler is a medium-to-large boiler in a power plant that provides a specified amount and quality of steam to the steam turbine. It is also one of the main thermal equipment in a thermal power plant. Ash accumulation on the heating surface of a power plant boiler is unavoidable. However, by reasonably setting ash baffles in the flue of the power plant boiler to block ash or adjusting the internal structure of the flue, the degree of ash accumulation on the heating surface of the power plant boiler can be reduced, thereby reducing the impact of ash accumulation on the heating surface, reducing safety hazards, and ensuring the thermal efficiency of the boiler.

[0003] At present, the angle at which the ash baffle is placed in the flue or what type of ash baffle is placed in the flue often involves the numerical simulation technology of the boiler system. This technology has a long cycle and high cost. Of course, hot tests can also be carried out directly, that is, tests are carried out with real power station boilers. This also has the problem of high cost and great safety hazards. Utility Model Content

[0004] The main purpose of the utility model is to provide a cold test device, which can monitor the state of ash in a simulated boiler flue in real time and intuitively, and can select a suitable ash baffle plate type and ash baffle plate angle according to the ash baffle situation.

[0005] In order to achieve the above object, the utility model provides a cold test device, comprising:

[0006] An ash inlet shell is formed with a first flue extending in the up-down direction, the first flue is connected to the ash inlet shell to form an ash inlet and an ash outlet, and a plurality of mounting portions spaced apart in the up-down direction are provided in the first flue;

[0007] An ash delivery part, formed with an ash delivery pipeline, for communicating with the ash inlet and delivering ash into the first flue;

[0008] An ash collecting portion, disposed at the bottom of the first flue, for collecting dust falling from the first flue;

[0009] An ash discharge shell is formed with a second flue extending in the left-right direction, the second flue is connected to the ash discharge shell to form an ash discharge connection port and an ash processing connection port, the ash discharge connection port is connected to the ash discharge port; and

[0010] A dust processing part connected to the ash processing connection port for processing dust in the airflow after passing through the ash baffle and the second flue;

[0011] The plurality of mounting parts include a first mounting part and a second mounting part that are arranged opposite to each other, and the first mounting parts at different heights and the second mounting parts at different heights are selected to be combined to mount the ash baffle, so that the ash baffle is mounted in the first flue at different inclination angles;

[0012] The ash inlet shell and the ash outlet shell are transparent.

[0013] Optionally, a mounting plate is provided inside the ash inlet housing, so that the first flue has a first ash inlet flue section and a second ash inlet flue section extending in the up-down direction;

[0014] The first mounting portion includes a lap block protruding from the inner wall of the ash inlet housing, and the second mounting portion includes a lap block protruding from the surface of the mounting plate;

[0015] The ash inlet housing is also provided with a connecting port to connect the first ash inlet flue section with the second ash inlet flue section;

[0016] The ash inlet and the ash outlet are both arranged away from the connecting port.

[0017] Optionally, the ash delivery part includes a blower, an ash delivery pipe and an ash inlet hopper, one end of the ash delivery pipe is connected to the blower, and the other end is connected to the ash inlet to form the ash delivery pipeline;

[0018] The ash feeding funnel is located between the blower and the ash feeding port and is connected to the ash conveying pipe.

[0019] Optionally, the side of the ash inlet shell is provided with two ash inlets and two ash outlets which are spaced apart in the up-down direction, the two ash inlets are adapted to the other end of the ash delivery pipe, and the two ash inlets are provided with an opening and closing portion, so that when the other end of the ash delivery pipe is connected to one of the two ash inlets, the other end of the ash delivery pipe is connected to the first ash inlet flue section, and the other of the two ash inlets is separated from the outer side of the ash inlet shell;

[0020] The two ash outlets are matched with the ash outlet connection port, and the two ash outlets are provided with the opening and closing part, so that when the ash outlet connection port is connected to one of the two ash outlets, the ash outlet connection port is connected with the second ash inlet flue section, and the other of the two ash outlets is separated from the outer side of the ash inlet shell.

[0021] Optionally, a gas-solid mixer is provided on the ash delivery pipe, one end of the gas-solid mixer is connected to the blower through one end of the ash delivery pipe, and the other end of the gas-solid mixer is connected to the first ash inlet flue section through the other end of the ash delivery pipe;

[0022] The ash feeding funnel is connected to the gas-solid mixer.

[0023] Optionally, the ash collecting part includes an electronic scale arranged at the bottom of the first ash inlet flue section, and an ash collecting cylinder and a dust cover are arranged on the top of the electronic scale. The dust cover is arranged on the ash collecting cylinder, and the open end of the ash collecting cylinder corresponds to the first ash inlet flue section to collect dust falling into the first ash inlet flue section.

[0024] Optionally, a portion of the ash inlet shell corresponding to the bottom of the first ash inlet flue section is arranged in a funnel shape.

[0025] Optionally, the ash inlet hopper and the portion of the ash inlet shell corresponding to the bottom of the first ash inlet flue section are both provided with an ash discharge valve.

[0026] Optionally, one end of the mounting plate is connected to the inner wall of one end of the ash inlet shell in the up-down direction, and the other end of the mounting plate is spaced from the inner wall of the other end of the ash inlet shell in the up-down direction to form the communication port; or,

[0027] One end of the mounting plate is connected to the inner wall of the other end of the ash inlet housing in the up-down direction, and the other end of the mounting plate is spaced from the inner wall of one end of the ash inlet housing in the up-down direction to form the communication port.

[0028] Optionally, the dust processing unit includes a first row of ash pipes, a second row of ash pipes, an induced draft fan and an ash processing device, one end of the induced draft fan is connected to the ash processing connection port through the first row of ash pipes, and the other end of the induced draft fan is connected to the ash processing device through the second row of ash pipes;

[0029] The ash inlet housing is provided with a pressure gauge.

[0030] In the technical solution of the utility model, the first flue in the ash inlet shell and the second flue in the ash outlet shell can be used to simulate the vertical flue and the horizontal flue in a real power station boiler, and the ash delivery part can deliver ash to the first flue through the ash delivery pipe, thereby preparing for the ash blocking situation in the boiler flue. The plurality of mounting parts include a first mounting part and a second mounting part that are relatively arranged, and the first mounting parts at different heights and the second mounting parts at different heights are selected to install the ash baffle plate, so that the ash baffle plate is installed in the first flue at different inclination angles, and the ash inlet shell and the ash outlet shell are both transparent. In this way, it is possible to intuitively and in real time observe or monitor the conditions in which different types of ash baffles placed at the first mounting portion and the second mounting portion in the simulated flue block the ash entering from the ash delivery pipe, and it is also possible to intuitively and in real time monitor the ash blocking conditions of the ash baffles at different placement angles. The blocked ash will fall into the ash collecting portion, and the ash blocking conditions of the ash baffles can also be determined by observing the ash in the ash collecting portion. The dust processing portion is provided to process dust in the airflow after passing through the ash baffle and the second flue, to prevent dust from entering the external environment through the second flue, thereby ensuring the environmental friendliness of the cold test device. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solution in the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0032] Figure 1 It is a structural schematic diagram of a cold state test device of the utility model when simulating an ascending flue;

[0033] Figure 2 It is a structural schematic diagram of a cold state test device of the utility model when simulating a descending flue.

[0034] Description of Figure Numbers:

[0035] Label name Label name 100 Cold test device 31 The first row of ash pipes 1 Ash inlet housing 32 Induced draft fan 11 Mounting Plate 33 Ash handling device 12 Ash inlet 34 Second row of ash pipes 13 Ash outlet 4 Ash delivery department 14 Lap Block 41 Blower 15 Pressure gauge 42 Ash hopper 16 First flue 43 Gas-solid mixer 16a Second ash inlet section 44 Ash delivery pipe 16b First ash inlet section 5 Ash collection department 2 Ash discharge housing 51 Ash discharge valve 21 Second flue 52 Ash collecting bin 3 Dust treatment unit 53 Electronic scales

[0036] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0037] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0040] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0041] A power plant boiler is a medium-to-large boiler in a power plant that provides a specified amount and quality of steam to the steam turbine. It is also one of the main thermal equipment in a thermal power plant. Ash accumulation on the heating surface of a power plant boiler is unavoidable. However, by reasonably setting ash baffles in the flue of the power plant boiler to block ash or adjusting the internal structure of the flue, the degree of ash accumulation on the heating surface of the power plant boiler can be reduced, thereby reducing the impact of ash accumulation on the heating surface, reducing safety hazards, and ensuring the thermal efficiency of the boiler.

[0042] At present, the angle at which the ash baffle is placed in the flue or what type of ash baffle is placed in the flue often involves the numerical simulation technology of the boiler system. This technology has a long cycle and high cost. Of course, hot tests can also be carried out directly, that is, tests are carried out with real power station boilers. This also has the problem of high cost and great safety hazards.

[0043] In view of this, the utility model provides a cold test device. Figure 1 and Figure 2 This is an embodiment of the present utility model.

[0044] See also Figure 1The utility model provides a cold test device 100, which includes an ash inlet shell 1, an ash delivery part 4, an ash collection part 5, an ash outlet shell 2 and a dust processing part 3. The ash inlet shell 1 is formed with a first flue 16 extending in the up-down direction, and the first flue 16 is connected to the ash inlet shell 1 to form an ash inlet port 12 and an ash outlet port 13. A plurality of mounting parts spaced apart in the up-down direction are provided in the first flue 16. The ash delivery part 4 is formed with an ash delivery pipe for connecting the ash inlet port 12 and delivering ash to the first flue 16. The ash collection part 5 is provided at the bottom of the first flue 16 to collect dust falling in the first flue 16. The ash outlet shell 2 is provided with a first flue 16 extending in the up-down direction. The first flue 16 is connected to the ash inlet shell 1 to form an ash inlet port 12 and an ash outlet port 13. A plurality of mounting parts spaced apart in the up-down direction are provided in the first flue 16. The ash delivery part 4 is provided with an ash delivery pipe for connecting the ash inlet port 12 and delivering ash to the first flue 16. The ash collection part 5 is provided at the bottom of the first flue 16 to collect dust falling in the first flue 16. A second flue 21 extending in the left and right directions is formed, and the second flue 21 is connected to the ash outlet shell 2 to form an ash outlet connection port and an ash processing connection port, and the ash outlet connection port is connected to the ash outlet 13, and the dust processing part 3 is connected to the ash processing connection port to process the dust in the airflow after passing through the ash baffle plate and the second flue 21, wherein the multiple mounting parts include a first mounting part and a second mounting part arranged relatively to each other, and the first mounting parts at different heights and the second mounting parts at different heights are selected in combination to install the ash baffle plate, so that the ash baffle plate is installed in the first flue 16 at different inclination angles, and the ash inlet shell 1 and the ash outlet shell 2 are transparently arranged.

[0045] In the technical solution of the utility model, the first flue 16 in the ash inlet shell 1 and the second flue 21 in the ash outlet shell 2 can be used to simulate the vertical flue and the horizontal flue in a real power station boiler, and the ash delivery part 4 can deliver ash to the first flue 16 through the ash delivery pipe, thereby preparing for the ash blocking situation in the boiler flue, wherein the multiple mounting parts include a first mounting part and a second mounting part that are relatively arranged, and the first mounting parts at different heights and the second mounting parts at different heights are selected to install the ash baffle plate, so that the ash baffle plate is installed in the first flue 16 at different inclination angles, and the ash inlet shell 1 and the ash outlet shell 2 are both transparent. In this way, it is possible to intuitively and in real time observe or monitor the different types of ash baffles placed at the first mounting portion and the second mounting portion in the simulated flue to block the ash entering from the ash delivery pipe, and it is also possible to intuitively and in real time monitor the ash blocking capabilities of the ash baffles at different placement angles. The blocked ash will fall into the ash collecting portion 5, and the ash blocking capabilities of the ash baffles can also be determined by observing the ash in the ash collecting portion 5. The dust processing portion 3 is provided to process dust in the airflow after passing through the ash baffles and the second flue 21, to prevent dust from entering the external environment through the second flue 21, thereby ensuring the environmental friendliness of the cold test device 100.

[0046] In this embodiment, the first mounting portion includes a lap block 14 protruding from the inner wall of the ash inlet shell 1, and the second mounting portion includes the lap block 14 protruding from the surface of the mounting plate 11. The lap block 14 is provided to place the ash baffle, and ash baffles of different angles and different types can be placed and removed more simply and conveniently, which is easy to operate. Of course, the first mounting portion and the second mounting portion can also be grooves provided on the inner wall of the ash inlet shell 1 and grooves provided on the surface of the mounting plate 11, which can be used for the insertion of the two ends of the ash baffle to achieve the placement of the ash baffle. A mounting plate 11 is provided inside the ash inlet shell 1 so that the first flue 16 has a first ash inlet flue section 16b and a second ash inlet flue section 16a extending in the up-down direction. A connecting port is also provided inside the ash inlet shell 1 so that the first ash inlet flue section 16b and the second ash inlet flue section 16a are connected. The ash inlet port 12 and the ash outlet port 13 are both arranged away from the connecting port. Such an arrangement allows ash to flow in both the first ash inlet flue section 16b and the second ash inlet flue section 16a, and ensures that ash can flow in the two vertical flues, thereby ensuring the accuracy of the ash blocking simulation of the ash baffle in the flue of the actual power station boiler.

[0047] In this embodiment, the ash delivery unit 4 includes a blower 41, an ash delivery pipe 44 and an ash inlet hopper 42. One end of the ash delivery pipe 44 is connected to the blower 41, and the other end is connected to the ash inlet 12 to form the ash delivery pipeline. The ash inlet hopper 42 is located between the blower 41 and the ash inlet 12 and is connected to the ash delivery pipe 44. With such a configuration, when ash blocking simulation is to be performed, ash is poured into the ash inlet hopper 42, and the ash enters the ash delivery pipe 44 through the ash inlet hopper 42. The blower 41 can generate wind, and the wind generated carries the ash in the ash delivery pipe 44 into the first flue 16 with the ash blocking plate.

[0048] Furthermore, the side of the ash inlet shell 1 is provided with two ash inlet ports 12 and two ash outlet ports 13 which are arranged at intervals in the upper and lower directions, the two ash inlet ports 12 are adapted to the other end of the ash delivering pipe 44, and the two ash inlet ports 12 are provided with an opening and closing portion, so that when the other end of the ash delivering pipe 44 is connected to one of the two ash inlet ports 12, the other end of the ash delivering pipe 44 is connected to the first ash inlet flue section 16b, and the other of the two ash inlet ports 12 is separated from the outer side of the ash inlet shell 1, the two ash outlet ports 13 are adapted to the ash outlet connecting port, and the two ash outlet ports 13 are provided with the opening and closing portion, so that when the ash outlet connecting port is connected to one of the two ash outlet ports 13, the ash outlet connecting port is connected to the second ash inlet flue section 16a, and the other of the two ash outlet ports 13 is separated from the outer side of the ash inlet shell 1. By providing two ash inlets 12 and two ash outlets 13, it is possible to use one cold test device 100 to simulate the upward flue and downward flue of a power station boiler, that is, it is possible to simulate the flow of ash from top to bottom and from bottom to top in the flue of the boiler, wherein only one ash inlet 12 can be connected to the first ash inlet flue section 16b, and only one ash outlet 13 can be connected to the second ash inlet flue section 16a by manual operation. Of course, the above operations can also be automatically realized by remote control.

[0049] Furthermore, a gas-solid mixer 43 is provided on the ash delivery pipe 44, one end of the gas-solid mixer 43 is connected to the blower 41 through one end of the ash delivery pipe 44, the other end of the gas-solid mixer 43 is connected to the first ash inlet flue section 16b through the other end of the ash delivery pipe 44, and the ash inlet funnel 42 is connected to the gas-solid mixer 43. In this arrangement, the wind generated by the blower 41 and the ash in the ash inlet funnel 42 will enter the gas-solid mixer 43 for mixing, which is more conducive to the wind generated by the blower 41 to bring the ash into the ash inlet housing 1 and the ash outlet housing 2, and is conducive to the ash smoothly entering the second ash inlet flue section 16a from the first ash inlet flue section 16b, and then entering the second flue 21, and finally entering the dust treatment part 3 from the second flue 21.

[0050] The ash collecting part 5 includes an electronic scale 53 arranged at the bottom of the first ash inlet flue section 16b, and an ash collecting barrel 52 and a dust cover are arranged on the top of the electronic scale 53. The dust cover is arranged on the ash collecting barrel 52, and the open end of the ash collecting barrel 52 corresponds to the first ash inlet flue section 16b to collect the dust falling from the first ash inlet flue section 16b. The electronic scale 53 can measure the weight of the blocked dust, and can quantify the dust blocked by the ash baffle plate, so as to more intuitively understand what type of ash baffle plate and what angle of the ash baffle plate can block more dust. The ash collecting barrel 52 can gather the blocked dust and prevent the dust from scattering, thereby reducing the measurement error of the blocked dust. The dust cover can further prevent the dust from scattering in the falling process, and can also ensure the high environmental protection of the cold test device 100.

[0051] Furthermore, the portion of the ash inlet housing 1 corresponding to the bottom of the first ash inlet flue section is funnel-shaped. In this way, the dust falling from the first ash inlet flue section 16b can be gathered and then made to fall, so that a larger portion of the blocked dust falls out of the first ash inlet flue section 16b and falls into the ash collecting portion 5 more accurately.

[0052] Furthermore, the ash inlet funnel 42 and the portion of the ash inlet shell 1 corresponding to the bottom of the first ash inlet flue section are both provided with an ash outlet valve 51. The ash inlet funnel 42 is provided with the ash outlet valve 51, and the flow rate of dust can be controlled according to demand, simulating the different flow rates of dust in a real power station boiler. At the same time, the amount of dust with too small a flow rate is also too small, that is, the weight is relatively light, and it is easy to float around. The portion of the ash inlet shell 1 corresponding to the bottom of the first ash inlet flue section is provided with an ash outlet valve 51, and a suitable falling flow rate of dust can be set so that it can reach the ash collecting part 5 to a greater extent.

[0053] In this embodiment, one end of the mounting plate 11 is connected to the inner wall of one end of the ash inlet shell 1 in the up-down direction, and the other end of the mounting plate 11 is spaced from the inner wall of the other end of the ash inlet shell 1 in the up-down direction to form the connecting port; or, one end of the mounting plate 11 is connected to the inner wall of the other end of the ash inlet shell 1 in the up-down direction, and the other end of the mounting plate 11 is spaced from the inner wall of one end of the ash inlet shell 1 in the up-down direction to form the connecting port. The connecting port formed by such arrangement can allow more dust to enter the second ash inlet flue section 16a from the first ash inlet flue section 16b in the ascending flue or the descending flue, and can also save the manufacturing material of the mounting plate 11, reduce the cost, and ensure the high mechanical strength of the mounting plate 11. Of course, the two ends of the mounting plate 11 can also be connected to the inner walls of the two ends of the ash inlet shell 1, and a plurality of small holes can be opened on the mounting plate 11 to allow dust to pass through.

[0054] In this embodiment, the dust processing part 3 includes a first ash discharge pipe 31, a second ash discharge pipe 34, an induced draft fan 32 and an ash processing device 33. One end of the induced draft fan 32 is connected to the ash processing connection port through the first ash discharge pipe 31, and the other end of the induced draft fan 32 is connected to the ash processing device 33 through the second ash discharge pipe 34. A pressure gauge 15 is provided on the ash inlet housing 1. The pressure gauge 15 can detect the pressure value in the ash inlet housing 1. The induced draft fan 32 can form a negative pressure in the ash inlet housing 1 when the pressure value measured by the pressure gauge 15 is too large, so that the ash inlet housing 1 simulating the boiler flue is safer. At the same time, the induced draft fan 32 can also make the dust flowing out of the second flue 21 enter the ash processing device 33 more smoothly, and finally complete the more environmentally friendly treatment of the dust after the test.

[0055] The above are only preferred embodiments of the utility model, and the patent scope of the utility model is not limited thereto. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept of the utility model, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the utility model.

Claims

1. A cold test device, characterized in that: include: An ash inlet shell is formed with a first flue extending in the up-down direction, the first flue is connected to the ash inlet shell to form an ash inlet and an ash outlet, and a plurality of mounting portions spaced apart in the up-down direction are provided in the first flue; An ash delivery part, formed with an ash delivery pipeline, for communicating with the ash inlet and delivering ash into the first flue; An ash collecting portion, disposed at the bottom of the first flue, for collecting dust falling from the first flue; An ash discharge shell is formed with a second flue extending in the left-right direction, the second flue is connected to the ash discharge shell to form an ash discharge connection port and an ash processing connection port, and the ash discharge connection port is connected to the ash discharge port; as well as, A dust processing part connected to the ash processing connection port for processing dust in the airflow after passing through the ash baffle and the second flue; The plurality of mounting parts include a first mounting part and a second mounting part that are arranged opposite to each other, and the first mounting parts at different heights and the second mounting parts at different heights are selected to be combined to mount the ash baffle, so that the ash baffle is mounted in the first flue at different inclination angles; The ash inlet shell and the ash outlet shell are transparent.

2. The cold test device according to claim 1, characterized in that: A mounting plate is provided inside the ash inlet housing so that the first flue has a first ash inlet flue section and a second ash inlet flue section extending in the up-down direction; The first mounting portion includes a lap block protruding from the inner wall of the ash inlet housing, and the second mounting portion includes a lap block protruding from the surface of the mounting plate; The ash inlet housing is also provided with a connecting port to connect the first ash inlet flue section with the second ash inlet flue section; The ash inlet and the ash outlet are both arranged away from the connecting port.

3. The cold test device according to claim 2, characterized in that: The ash delivery part includes a blower, an ash delivery pipe and an ash inlet hopper, one end of the ash delivery pipe is connected to the blower, and the other end is connected to the ash inlet to form the ash delivery pipeline; The ash feeding funnel is located between the blower and the ash feeding port and is connected to the ash conveying pipe.

4. The cold test device according to claim 3, characterized in that: The side of the ash inlet shell is provided with two ash inlets and two ash outlets which are spaced apart in the vertical direction, the two ash inlets are adapted to the other end of the ash delivery pipe, and the two ash inlets are provided with an opening and closing portion, so that when the other end of the ash delivery pipe is connected to one of the two ash inlets, the other end of the ash delivery pipe is connected to the first ash inlet flue section, and the other of the two ash inlets is separated from the outer side of the ash inlet shell; The two ash outlets are matched with the ash outlet connection port, and the two ash outlets are provided with the opening and closing part, so that when the ash outlet connection port is connected to one of the two ash outlets, the ash outlet connection port is connected with the second ash inlet flue section, and the other of the two ash outlets is separated from the outer side of the ash inlet shell.

5. The cold test device according to claim 3, characterized in that: The ash delivery pipe is provided with a gas-solid mixer, one end of the gas-solid mixer is connected to the blower through one end of the ash delivery pipe, and the other end of the gas-solid mixer is connected to the first ash inlet flue section through the other end of the ash delivery pipe; The ash feeding funnel is connected to the gas-solid mixer.

6. The cold test device according to claim 2, characterized in that: The ash collecting part includes an electronic scale arranged at the bottom of the first ash inlet flue section, and an ash collecting cylinder and a dust cover are arranged on the top of the electronic scale. The dust cover is arranged on the ash collecting cylinder, and the open end of the ash collecting cylinder corresponds to the first ash inlet flue section to collect dust falling into the first ash inlet flue section.

7. The cold test device according to claim 2, characterized in that: The portion of the ash inlet housing corresponding to the bottom of the first ash inlet flue section is arranged in a funnel shape.

8. The cold test device according to claim 3, characterized in that: The ash inlet hopper and the ash inlet shell are both provided with ash outlet valves at the parts corresponding to the bottom of the first ash inlet flue section.

9. The cold test device according to claim 2, characterized in that: One end of the mounting plate is connected to the inner wall of one end of the ash inlet housing in the up-down direction, and the other end of the mounting plate is spaced from the inner wall of the other end of the ash inlet housing in the up-down direction to form the communication port; or, One end of the mounting plate is connected to the inner wall of the other end of the ash inlet housing in the up-down direction, and the other end of the mounting plate is spaced from the inner wall of one end of the ash inlet housing in the up-down direction to form the communication port.

10. The cold test device according to claim 1, characterized in that: The dust processing part includes a first row of ash pipes, a second row of ash pipes, an induced draft fan and an ash processing device, one end of the induced draft fan is connected to the ash processing connection port through the first row of ash pipes, and the other end of the induced draft fan is connected to the ash processing device through the second row of ash pipes; The ash inlet housing is provided with a pressure gauge.

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