Wind cap resistance test bed for circulating fluidized bed boiler

Abstract

The utility model relates to the technical field of boiler hood resistance test, in particular to a hood resistance test bed for a circulating fluidized bed boiler, which comprises a test frame. A test chamber and a contrast chamber are arranged in the test frame, a base is fixedly connected to the bottom end of the test frame, an air pump is fixedly connected to the inner wall of the base, a connecting frame is fixedly connected to the output end of the air pump, and connecting pipes fixedly connected with the bottom ends of the test chamber and the contrast chamber are arranged at the two ends of the connecting frame; a mounting base is arranged at the connecting part of the test chamber and the connecting pipe, a mounting spring is fixedly connected to the inner wall of the mounting base, a clamping block is arranged, the mounting spring drives a connecting block to slide through self elasticity, and the connecting block slides to drive a clamping plate to horizontally slide along the inner wall of the mounting base through a supporting rod; the clamping plates slide to drive the clamping blocks to be tightly attached to the boiler hood, the working faces of the clamping blocks are in an arc shape, and rapid installation operation of the boiler hood is achieved.

Description

Technical Field

[0001] This utility model belongs to the technical field of boiler wind cap resistance testing, and particularly relates to a wind cap resistance testing bench for circulating fluidized bed boilers. Background Technology

[0002] Circulating fluidized bed boiler technology is a highly efficient and clean combustion technology. Through improvements in in-furnace combustion technology, SO2 and NOx emissions are reduced. As a clean coal technology, it has received widespread attention both domestically and internationally. With the increasing environmental standards, the demand for circulating fluidized beds in the heating and power markets will further expand. The technical modification of the air caps on the boiler air distribution plate directly affects the boiler's thermal efficiency. Therefore, during the production process of the air caps, it is necessary to use testing equipment to effectively test the air resistance of the air caps.

[0003] In the prior art, utility model patent with publication number CN218381556U discloses a wind cap resistance test bench for a circulating fluidized bed boiler, including a mounting platform and a test chamber, a control box with a display screen, and a wind cap body to be tested, all mounted on the upper surface of the mounting platform. The lower end of the test chamber is provided with a mounting cavity, and an exhaust mechanism is provided inside the mounting cavity. Two test chambers are provided in the middle of the test chamber, and each of the two test chambers is fitted with a cover by a hinge. The lower end of each test chamber is provided with a connecting pipe communicating with the mounting cavity, and the upper end of the test chamber is provided with two ventilation pipes.

[0004] In existing circulating fluidized bed boiler air cap resistance test benches, the boiler air caps are typically connected to the test bench via threads. Over time, these threads wear down, leading to significant errors in the resistance test results. Therefore, we propose an air cap resistance test bench for circulating fluidized bed boilers. Utility Model Content

[0005] The purpose of this invention is to provide a test bench for the resistance of the air cap for a circulating fluidized bed boiler, so as to solve the above-mentioned technical problems and realize the rapid installation of the boiler air cap.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A test bench for wind cap resistance in a circulating fluidized bed boiler includes a test frame; the test frame contains a test chamber and a control chamber; a base is fixedly connected to the bottom of the test frame; an air pump is fixedly connected to the inner wall of the base; a connecting frame is fixedly connected to the output end of the air pump; connecting pipes are provided at both ends of the connecting frame and are fixedly connected to the bottom ends of the test chamber and the control chamber; a mounting seat is provided at the connection point between the test chamber and the connecting pipe; a mounting spring is fixedly connected to the inner wall of the mounting seat; a connecting block is fixedly connected to one end of the mounting spring; support rods are provided at both ends of the connecting block; a clamping plate that slides horizontally against the inner wall of the mounting seat is screwed to one end of the support rod; a clamping block is fixedly connected to the outer wall of the clamping plate; a pressure detector is provided on the inner wall of the test chamber; and an exhaust pipe is provided on the outer wall of the test chamber.

[0008] Preferably, the internal structures of the test chamber and the control chamber are the same. In this embodiment, it is beneficial to use the functions of the test chamber and the control chamber alternately, avoiding the wear and tear of the internal structure of the test chamber due to prolonged use of one set for testing, which would affect the experimental results.

[0009] Preferably, the working surface of the clamping block is arc-shaped. In this embodiment, the connecting block slides through the support rod to drive the clamping plate to slide horizontally along the inner wall of the mounting base. The sliding of the clamping plate causes the clamping block to fit tightly with the boiler air cap, and the working surface of the clamping block is arc-shaped, so as to realize the stable installation operation of the boiler air cap.

[0010] Preferably, a positioning spring is screwed to the top of the connecting frame, and a handle screwed to one end of the positioning spring is screwed to the top of the connecting frame. A positioning plate fixedly connected to the top of the connecting frame is fitted to the side wall of the handle. One end of the handle extends into the interior of the connecting frame and is fixedly connected to a rotating disk. A communicating hole is provided on the inner wall of the rotating disk. An opening and closing spring is fixedly connected to the inner wall of the test frame. A locking post is fixedly connected to the top of the opening and closing spring. An opening and closing plate slidably connected to the inner wall of the test frame is fitted to the top of the locking post. A locking groove is provided at the connection between the opening and closing plate and the locking post.

[0011] Preferably, the handle bar forms a positioning structure with the positioning plate through the positioning spring. There are two sets of positioning plates. In this embodiment, it is convenient for the handle bar to rotate and drive the connecting hole inside the rotating disk to rotate synchronously, so that the air pump is connected to the test chamber. At the same time, the positioning spring drives the handle bar to fit tightly with the positioning plate through its own elasticity.

[0012] Preferably, the connecting hole is L-shaped. In this embodiment, by setting an L-shaped connecting hole, it is beneficial for the gas pump to be connected to the test chamber and the control chamber respectively, so as to avoid changes in the initial pressure of the two sets of high-pressure gases.

[0013] Preferably, the slots are provided in two sets, which are located on both sides of the bottom end of the opening and closing plate. In this embodiment, the opening and closing spring drives the locking post to slide vertically through its own elastic force, so that the locking post engages with the slots at the bottom end of the opening and closing plate, thereby achieving the sealing operation of the test chamber and the control chamber.

[0014] Compared with the prior art, the beneficial effects of the wind cap resistance test bench for circulating fluidized bed boilers described in this utility model are:

[0015] 1. It is equipped with a clamping block, and the spring drives the connecting block to slide through its own elasticity. The sliding of the connecting block drives the clamping plate to slide horizontally along the inner wall of the mounting base through the support rod. The sliding of the clamping plate causes the clamping block to fit tightly with the boiler air cap, and the working surface of the clamping block is arc-shaped, realizing the quick installation operation of the boiler air cap.

[0016] 2. A connecting hole is provided. The opening and closing spring drives the locking post to slide vertically through its own elasticity, so that the locking post engages with the locking groove at the bottom of the opening and closing plate, realizing the sealing operation of the test chamber and the control chamber. Then, the handle is rotated to drive the connecting hole inside the rotating disk to rotate synchronously, so that the air pump is connected to the test chamber. At the same time, the positioning spring drives the handle to fit tightly with the positioning plate through its own elasticity, so as to prevent the initial pressure of the two sets of high-pressure gases from changing. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the three-dimensional unfolded structure of the connecting frame in this utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of the mounting base in this utility model;

[0020] Figure 4 This is a schematic diagram of the opening and closing plate in this utility model.

[0021] The following are labeled in the diagram: 1. Test frame; 2. Test chamber; 3. Control chamber; 4. Base; 5. Air pump; 6. Connecting frame; 7. Connecting pipe; 8. Mounting seat; 9. Mounting spring; 10. Connecting block; 11. Support rod; 12. Clamping plate; 13. Clamping block; 14. Pressure detector; 15. Exhaust pipe; 16. Positioning spring; 17. Handle lever; 18. Positioning plate; 19. Rotary disk; 20. Connecting hole; 21. Opening and closing spring; 22. Locking post; 23. Opening and closing plate; 24. Locking groove. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Reference Figure 1-4 As shown, this application discloses a test bench for the resistance of a circulating fluidized bed boiler, comprising a test frame 1. The test frame 1 contains a test chamber 2 and a control chamber 3. A base 4 is fixedly connected to the bottom of the test frame 1. An air pump 5 is fixedly connected to the inner wall of the base 4. A connecting frame 6 is fixedly connected to the output end of the air pump 5. Connecting pipes 7 are fixedly connected to the bottom ends of the test chamber 2 and the control chamber 3 at both ends of the connecting frame 6. A mounting seat 8 is provided at the connection point between the test chamber 2 and the connecting pipe 7. A mounting spring 9 is fixedly connected to the inner wall of the mounting seat 8. A connecting block 10 is fixedly connected to one end of the mounting spring 9. Support rods 11 are provided at both ends of the connecting block 10. A clamping plate 12 that slides horizontally against the inner wall of the mounting seat 8 is screwed to one end of the support rod 11. A clamping block 13 is fixedly connected to the outer wall of the clamping plate 12. A pressure detector 14 is provided on the inner wall of the test chamber 2, and an exhaust pipe 15 is provided on the outer wall of the test chamber 2.

[0024] Based on the above structure, the spring 9 drives the connecting block 10 to slide through its own elastic force. The sliding of the connecting block 10 drives the clamping plate 12 to slide horizontally along the inner wall of the mounting base 8 through the support rod 11. The sliding of the clamping plate 12 drives the clamping block 13 to fit tightly with the boiler air cap, and the working surface of the clamping block 13 is arc-shaped, realizing the quick installation operation of the boiler air cap.

[0025] In one embodiment, the internal structures of test chamber 2 and control chamber 3 are identical. This facilitates the alternating use of the functions of test chamber 2 and control chamber 3, avoiding prolonged use of only one set for testing, which could lead to wear and tear on the internal structure of test chamber 2 and affect the experimental results.

[0026] In one embodiment, the working surface of the clamping block 13 is arc-shaped. The connecting block 10 slides through the support rod 11 to drive the clamping plate 12 to slide horizontally along the inner wall of the mounting base 8. The sliding of the clamping plate 12 causes the clamping block 13 to fit tightly against the boiler air cap, and the working surface of the clamping block 13 is arc-shaped, so as to realize the stable installation operation of the boiler air cap.

[0027] In one embodiment, a positioning spring 16 is screwed to the top of the connecting frame 6, and a handle 17 screwed to the top of the connecting frame 6 is screwed to one end of the positioning spring 16. A positioning plate 18 fixedly connected to the top of the connecting frame 6 is attached to the side wall of the handle 17. A rotating disk 19 is fixedly connected to the inside of the connecting frame 6 at one end of the handle 17. A connecting hole 20 is opened on the inner wall of the rotating disk 19. An opening and closing spring 21 is fixedly connected to the inner wall of the test frame 1. A locking post 22 is fixedly connected to the top of the opening and closing spring 21. An opening and closing plate 23 slidably connected to the inner wall of the test frame 1 is fitted into the top of the locking post 22. A locking groove 24 is opened at the connection between the opening and closing plate 23 and the locking post 22.

[0028] In this embodiment, the opening and closing spring 21 drives the locking post 22 to slide vertically through its own elastic force, so that the locking post 22 engages with the locking groove 24 at the bottom of the opening and closing plate 23, thereby achieving a sealing operation of the test chamber 2 and the control chamber 3 and preventing leakage from the test chamber 2 and the control chamber 3. Then, the handle 17 is rotated to drive the connecting hole 20 inside the rotating disk 19 to rotate synchronously, so that the air pump 5 is connected to the test chamber 2. At the same time, the positioning spring 16 drives the handle 17 to fit tightly with the positioning plate 18 through its own elastic force, preventing the connecting hole 20 from shaking.

[0029] In one embodiment, the handle 17 forms a positioning structure with the positioning plate 18 via the positioning spring 16, and the positioning plate 18 is provided in two sets. This facilitates the rotation of the handle 17 to drive the connecting hole 20 inside the rotating disk 19 to rotate synchronously, so that the air pump 5 is connected to the test chamber 2. At the same time, the positioning spring 16 uses its own elasticity to make the handle 17 and the positioning plate 18 fit tightly together.

[0030] In one embodiment, the connecting hole 20 is L-shaped. By setting the connecting hole 20 in an L-shape, it is beneficial for the air pump 5 to be connected to the test chamber 2 and the control chamber 3 respectively, thus avoiding changes in the initial pressure of the two sets of high-pressure gases.

[0031] In one embodiment, two sets of slots 24 are provided, located on both sides of the bottom end of the opening and closing plate 23. The opening and closing spring 21 drives the locking post 22 to slide vertically through its own elastic force, so that the locking post 22 engages with the slots 24 at the bottom end of the opening and closing plate 23, thereby achieving the sealing operation of the test chamber 2 and the control chamber 3.

[0032] The working principle of the wind cap resistance test bench for circulating fluidized bed boilers described in this utility model:

[0033] First, the staff places the boiler air cap on the mounting base 8 in the test chamber 2. Then, the mounting spring 9 drives the connecting block 10 to slide through its own elasticity. The sliding of the connecting block 10 drives the clamping plate 12 to slide horizontally along the inner wall of the mounting base 8 through the support rod 11. The sliding of the clamping plate 12 causes the clamping block 13 to fit tightly with the boiler air cap, realizing the quick installation operation of the boiler air cap.

[0034] Next, the staff pushes the opening and closing plate 23, and then the opening and closing spring 21 drives the locking post 22 to slide vertically through its own elastic force, so that the locking post 22 engages with the locking groove 24 at the bottom of the opening and closing plate 23, thereby achieving the sealing operation of the test chamber 2 and the control chamber 3.

[0035] Next, the air pump 5 operates to inject high-pressure gas into the control chamber 3 through the connecting frame 6 and the connecting pipe 7. The pressure in the control chamber 3 is detected by the pressure detector 14. Then, the operator moves the handle 17, which rotates the connecting hole 20 inside the rotating disk 19 to rotate synchronously, so that the air pump 5 is connected to the test chamber 2. At the same time, the positioning spring 16 uses its own elasticity to make the handle 17 fit tightly against the positioning plate 18 to prevent the connecting hole 20 from shaking.

[0036] Finally, the air pump 5 operates to pass high-pressure gas through the boiler vent in the test chamber 2. The pressure in the test chamber 2 is detected by the pressure detector 14. The pressure in the control chamber 3 is subtracted from the pressure in the test chamber 2 to obtain the resistance value of the boiler vent.

[0037] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A wind cap resistance test bench for a circulating fluidized bed boiler, characterized in that: The test includes a test frame (1); the test frame (1) contains a test chamber (2) and a control chamber (3); a base (4) is fixedly connected to the bottom of the test frame (1); an air pump (5) is fixedly connected to the inner wall of the base (4); a connecting frame (6) is fixedly connected to the output end of the air pump (5); connecting pipes (7) are fixedly connected to the bottom ends of the test chamber (2) and the control chamber (3) at both ends of the connecting frame (6); and mounting bases (8) are provided at the connection points between the test chamber (2) and the connecting pipes (7). The inner wall of the mounting base (8) is fixedly connected to a mounting spring (9), one end of the mounting spring (9) is fixedly connected to a connecting block (10), both ends of the connecting block (10) are provided with support rods (11), one end of the support rod (11) is screwed to a clamping plate (12) that slides horizontally with the inner wall of the mounting base (8), the outer wall of the clamping plate (12) is fixedly connected to a clamping block (13), the inner wall of the test chamber (2) is provided with a pressure detector (14), and the outer wall of the test chamber (2) is provided with an exhaust pipe (15).

2. The wind cap resistance test bench for circulating fluidized bed boilers according to claim 1, characterized in that: The internal structures of the test chamber (2) and the control chamber (3) are the same.

3. The wind cap resistance test bench for circulating fluidized bed boilers according to claim 1, characterized in that: The working surface of the clamp (13) is arc-shaped.

4. The wind cap resistance test bench for circulating fluidized bed boilers according to claim 1, characterized in that: A positioning spring (16) is screwed to the top of the connecting frame (6). One end of the positioning spring (16) is screwed to a handle (17) that is screwed to the top of the connecting frame (6). The side wall of the handle (17) is fitted with a positioning plate (18) that is fixedly connected to the top of the connecting frame (6). One end of the handle (17) extends into the interior of the connecting frame (6) and is fixedly connected to a rotating disk (19). The inner wall of the rotating disk (19) is provided with a connecting hole (20). The inner wall of the test frame (1) is fixedly connected to an opening and closing spring (21). The top of the opening and closing spring (21) is fixedly connected to a locking post (22). The top of the locking post (22) is fitted with an opening and closing plate (23) that is slidably connected to the inner wall of the test frame (1). The connection between the opening and closing plate (23) and the locking post (22) is provided with a locking groove (24).

5. The wind cap resistance test bench for circulating fluidized bed boilers according to claim 4, characterized in that: The handle (17) forms a positioning structure between the positioning spring (16) and the positioning plate (18), and the positioning plate (18) is provided in two sets.

6. The wind cap resistance test bench for circulating fluidized bed boilers according to claim 4, characterized in that: The connecting hole (20) is L-shaped.

7. The wind cap resistance test bench for circulating fluidized bed boilers according to claim 4, characterized in that: The card slot (24) is provided in two sets, and the two sets of card slots (24) are located on both sides of the bottom end of the opening and closing plate (23).

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