Cyclone separator center cylinder connecting mechanism and cyclone separator capable of preventing center cylinder from falling off

Abstract

The utility model belongs to the technical field of circulating fluidized bed boilers, and particularly relates to a cyclone separator center cylinder connecting mechanism and a cyclone separator preventing a center cylinder from falling off, the cyclone separator center cylinder connecting mechanism comprises a connecting cross beam and a connecting buckle, the connecting buckle comprises a base, and the base is provided with a cross beam through hole allowing the connecting cross beam to penetrate through. The cyclone separator center cylinder connecting mechanism is additionally arranged between the center cylinder and the cyclone separator and comprises a connecting cross beam and a connecting buckle, the connecting buckle comprises a base, the base is provided with a cross beam through hole allowing the connecting cross beam to penetrate through, and the connecting cross beam extends in the radial direction of the center cylinder and is inserted into the cyclone separator. The connecting cross beams play a role in connecting rib plates in the prior art, the connecting buckles can prevent the problem that the connecting positions of the center cylinder and the connecting cross beams and the cyclone separator are loosened after hot-state expansion extrusion, thermal stress change and cold-state shrinkage, then the problem that the center cylinder shakes and even falls off is avoided, and production safety is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of circulating fluidized bed boilers, in particular to a cyclone separator central tube connection mechanism and a cyclone separator with a central tube that can prevent it from falling off. Background Art

[0002] The cyclone separator is one of the three core components of the circulating fluidized bed boiler. The cyclone separator includes a riser, a return device, a separator and other components. The flue gas carries solid particles tangentially into the cylindrical cyclone separator and forms a downward vortex flow in the separator. Under the action of centrifugal force, the solid particles in the flue gas are thrown to the wall of the separator cylinder and slide down along the wall into the riser connected to the separator. The solid particles enter the furnace through the return valve, and the flue gas enters the flue from above the separator.

[0003] Among them, the center tube is the part that causes the most frequent failure of the cyclone separator. The center tube is a key component installed at the top of the cyclone separator. It is inserted into the cyclone separator to a certain depth through the center tube to form a ring-shaped separation channel with the separator. The flue gas entering the cyclone separator rotates around the center tube.

[0004] For the coordination between the central tube and the cyclone separator, please refer to patent CN 203836947 U, which discloses a circulating fluidized bed boiler cyclone separator, including a separator central tube, a separator cylinder, a separator outlet flue, an expansion joint, an expansion joint and an outlet flue rib plate, wherein an outlet flue rib plate is provided at the bottom of the separator outlet flue, the separator central tube is located in the separator cylinder, the separator central tube is connected to the outlet flue rib plate, and the separator cylinder is connected to the separator outlet flue through an expansion joint.

[0005] Due to the large diameter and thin wall thickness of the center tube, the rib plate and the center tube are also subjected to high temperature and flue gas vibration. Long-term high temperature and flue gas shaking can easily cause the connection between the center tube and the cyclone separator to loosen, and even create the risk of the center tube falling. Utility Model Content

[0006] The purpose of the utility model is to provide a central tube of a cyclone separator to solve the problem in the above-mentioned background technology that the central tube shrinks due to thermal stress changes and smoke shaking, resulting in the loose connection between the central tube and the cyclone separator, causing the central tube to shake or even fall.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A cyclone separator center tube connection mechanism includes a connecting beam connecting the center tube and the cyclone separator cylinder, and is characterized in that it also includes a connecting buckle, the connecting buckle includes a base, and the base is provided with a beam through hole for accommodating the connecting beam to pass through.

[0009] Furthermore, the base is provided with a pin hole 1, the pin hole 1 passes through the base, and the pin hole 1 is perpendicular to the through hole of the crossbeam;

[0010] A second pin hole is arranged at one end of the connecting crossbeam close to the cyclone separator cylinder, the second pin hole is arranged along the radial direction of the connecting crossbeam, and the second pin hole penetrates the connecting crossbeam;

[0011] The connecting buckle also includes a crossbeam fastening structure, and the crossbeam fastening structure includes a fixing pin, and the fixing pin passes through the first pin hole and the second pin hole.

[0012] Furthermore, threads are provided at both ends of the fixing pin;

[0013] The crossbeam fastening structure also includes a fixing nut, the fixing nut is provided with a thread matching the fixing pin, and the fixing nut is connected to both ends of the fixing pin through threads.

[0014] The present application also provides a cyclone separator with an anti-dropping central cylinder, comprising a central cylinder and a cyclone separator cylinder body, wherein the central cylinder is arranged in the cyclone separator cylinder body;

[0015] It also includes the above-mentioned cyclone separator central tube connection mechanism, wherein two or more connecting cross beams are provided, and the connecting cross beams are evenly arranged along the outer circumference of the central tube;

[0016] The connecting buckles are correspondingly provided in plurality, the base of the connecting buckles is fixed to the cylinder of the cyclone separator, and the connecting crossbeam passes through the crossbeam through hole on the base and is connected to the cylinder of the cyclone separator.

[0017] Furthermore, a plug-in hole is provided at the connection between the cyclone separator cylinder and the connecting crossbeam, and the connecting crossbeam is inserted into the plug-in hole.

[0018] Furthermore, it also includes a support frame, which is connected to the cyclone separator cylinder, and a plug hole is arranged on the support frame, and the connecting crossbeam is inserted into the plug hole.

[0019] Furthermore, the support frame is snap-connected with the cylinder of the cyclone separator.

[0020] Furthermore, the connecting cross beam is arranged at the same height along the central tube, and the plug-in holes are arranged at the same height of the cyclone separator cylinder.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] The utility model adds a cyclone separator center cylinder connection mechanism between the center cylinder and the cyclone separator, including a connecting crossbeam and a connecting buckle, the connecting buckle includes a base, the base is provided with a crossbeam through hole for accommodating the connecting crossbeam to pass through, the connecting crossbeam extends along the radial direction of the center cylinder and is connected to the cyclone separator cylinder. The connecting crossbeam plays the role of connecting the rib plate in the prior art, and the connecting buckle can prevent the center cylinder and the connecting crossbeam from being loosened at the connection with the cyclone separator cylinder after hot expansion and extrusion, cold contraction due to thermal stress changes, and at the same time avoid the problem of the center cylinder shaking or even falling due to smoke vibration, thereby ensuring production safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the connecting buckle structure of Example 1;

[0024] Figure 2 This is a schematic diagram of the connection of the central cylinder of the cyclone separator in Example 2;

[0025] Figure 3 This is a schematic diagram of the connection of the central cylinder of the cyclone separator in Example 3;

[0026] Figure 4 It is a schematic diagram of the installation structure of the connecting structure, the central tube and the cyclone separator;

[0027] Among them, 1-center tube, 2-connecting beam, 3-plug hole, 4-base, 5-support frame, 6-fixing pin, 7-pin hole 1, 8-fixing nut, 9-cyclone separator cylinder. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention, but the present invention is not limited to the implementation methods described below.

[0029] Example 1

[0030] The utility model provides a cyclone separator central tube connection mechanism, comprising a connecting crossbeam 2 and a connecting buckle, wherein the connecting buckle comprises a base 4, and the base 4 is provided with a crossbeam through hole for accommodating the connecting crossbeam 2 to pass through.

[0031] For details, please refer to Figure 1 The base 4 is a frame structure with a rectangular longitudinal section welded from scrap steel plates. The center of the frame structure can accommodate the connecting beam 2 passing through, and the connecting beam 2 plays the role of connecting the rib plates in the prior art.

[0032] When in use, the base 4 is fixed to the inner wall of the cyclone separator cylinder 9, and the fixing method is generally welding. The base 4 serves to extend the connection length of the connecting beam 2 and the cyclone separator cylinder 9. At the same time, it supports the connecting beam 2, making the connection between the connecting beam 2 and the cyclone separator cylinder 9 more secure, preventing the connecting beam 2 and the cyclone separator cylinder 9 from expanding and squeezing due to heat, and the connecting beam 2 and the cyclone separator cylinder 9 from shrinking in the cold state, and the connecting beam 2 and the cyclone separator cylinder 9 from loosening. At the same time, it avoids the problem of the center cylinder 1 shaking or even falling due to smoke vibration.

[0033] Further optimization, in order to enhance the fastening degree between the base 4 and the connecting beam 2, the base 4 is provided with a pin hole 1 7, the pin hole 1 7 passes through the upper and lower end surfaces of the base 4, and the pin hole 1 7 is perpendicular to the beam through hole; and the connecting beam 2 is provided with a pin hole 2 at one end close to the cyclone separator, the pin hole 2 is arranged along the radial direction of the connecting beam 2, and the pin hole 2 passes through the connecting beam 2. The connecting buckle also includes a beam fastening structure, and the beam fastening structure includes a fixing pin 6.

[0034] When in use, the fixing pin 6 passes through the pin hole 1 7 of the base 4 and the pin hole 2 at the end of the connecting beam 2. The fixing pin 6 connects and tightens the base 4 and the connecting beam 2. Even if the connecting beam 2 and the cyclone separator cylinder 9 are loose, they will not separate, causing the central cylinder 1 to fall and causing a production safety accident.

[0035] Further optimization, threads are set at both ends of the fixing pin 6; the beam fastening structure also includes a fixing nut 8, which is provided with threads matching the fixing pin 6, and the fixing nut 8 is connected to both ends of the fixing pin 6 through threads. The fixing nut 8 plays a further fixing role, ensuring the connection between the connecting beam 2 and the cyclone separator cylinder 9, and preventing the connecting beam 2 and the cyclone separator cylinder 9 from loosening and causing the central cylinder 1 to fall off.

[0036] Example 2

[0037] Based on the cyclone separator center tube connection mechanism in the above embodiment 1, this embodiment provides a cyclone separator with an anti-falling center tube. Figure 2 and Figure 4 , including a central tube 1 and a cyclone separator cylinder 9; the central tube 1 is installed in the cyclone separator cylinder 9, and a plug hole 3 is provided on the inner wall of the cyclone separator cylinder 9; the central tube 1 and the cyclone separator cylinder 9 are connected by the above-mentioned connecting mechanism.

[0038] The connecting mechanism refers to the above-mentioned embodiment 1, including a connecting beam 2 and a connecting buckle. Two or more connecting beams 2 are provided. Specifically, in this embodiment, forty connecting beams 2 are provided. The connecting beams 2 are evenly distributed along the outer circumference of the central tube 1, and the connecting beams 2 are provided at the same height along the central tube 1.

[0039] The connecting buckle includes a base 4 and a beam fastening structure. The base 4 is arranged at the plug hole 3 of the cyclone separator cylinder 9. The base 4 is welded and fixed to the cyclone separator cylinder 9. The connecting beam 2 passes through the beam through hole on the base 4 and is inserted into the plug hole 3 of the cyclone separator cylinder 9. The base 4 plays a role in extending the connection length between the connecting beam 2 and the cyclone separator cylinder 9. At the same time, it plays a role in supporting the connecting beam 2, making the connection between the connecting beam 2 and the cyclone separator cylinder 9 more firmly, preventing the connecting beam 2 and the cyclone separator cylinder 9 from expanding and squeezing in the hot state, and the fitting relationship between the connecting beam 2 and the cyclone separator cylinder 9 shrinks in the cold state, and the connecting beam 2 and the cyclone separator cylinder 9 are loosened. At the same time, it avoids the problem of shaking or even falling of the central cylinder 1 due to smoke vibration.

[0040] The beam fastening structure specifically comprises a fixing pin 6 and a fixing nut 8. The fixing pin 6 is provided with threads at both ends, and the fixing nut 8 is provided with threads matching the fixing pin 6. When in use, the fixing pin 6 passes through the pin hole 1 7 of the base 4 and the pin hole 2 at the end of the connecting beam 2, and the fixing nut 8 is fixed at both ends of the fixing pin 6. The beam fastening structure is used to enhance the fastening degree between the base 4 and the connecting beam 2, ensure the connection between the connecting beam 2 and the cyclone separator cylinder 9, and prevent the connecting beam 2 and the cyclone separator cylinder 9 from loosening, causing the central cylinder 1 to fall, and causing a production safety accident.

[0041] Example 3

[0042] Based on the technical solution in the above embodiment 2, this embodiment provides another cyclone separator with an anti-falling central tube. Figure 3 and Figure 4 , which is different from Example 2 in that:

[0043] The support frame 5 is also included, and the support frame 5 is connected to the cyclone separator cylinder 9. Specifically, in this embodiment, the support frame 5 is provided with a protrusion, and a bayonet is provided on the inner wall of the cyclone separator cylinder 9, so that the support frame 5 and the cyclone separator cylinder 9 are clamped. The support frame 5 is provided with a plug hole 3 for accommodating the connection beam 2 to pass through. In this embodiment, the weight of the central cylinder is evenly applied to the support frame 5 to avoid damage to the overall structure of the cyclone separator cylinder 9.

[0044] The working principle of the cyclone separator of this embodiment is as follows: the utility model adds a cyclone separator center cylinder connection mechanism between the center cylinder 1 and the cyclone separator cylinder 9, specifically including a connecting beam 2 and a connecting buckle, the connecting buckle includes a base 4 and a beam fastening structure, the base 4 is provided with a beam through hole for accommodating the connecting beam 2 to pass through, the connecting beam 2 extends along the radial direction of the center cylinder 1, and is inserted into the plug-in hole 3 on the cyclone separator cylinder 9 or the support frame 5. The connecting beam 2 serves to connect the center cylinder 1 and the cyclone separator cylinder 9, and the connecting buckle can prevent the center cylinder 1 and the connecting beam 2 from expanding and squeezing the cyclone separator cylinder 9 in a hot state, and then the problem of the cold contraction due to the change of thermal stress and the connection between the plug-in hole 3 of the cyclone separator cylinder 9 is loosened, and at the same time, the problem of the center cylinder 1 shaking or even falling due to the vibration of the flue gas is avoided, so as to ensure production safety.

Claims

1. A cyclone separator central cylinder connection mechanism, comprising a connecting beam (2) connecting the central cylinder (1) and a cyclone separator cylinder (9), characterized in that: It also comprises a connecting buckle, the connecting buckle comprising a base (4), the base (4) being provided with a beam through hole for accommodating the connecting beam (2) to pass through; The base (4) is provided with a pin hole (7), the pin hole (7) passes through the base (4), and the pin hole (7) is perpendicular to the crossbeam through hole; A second pin hole is provided at one end of the connecting crossbeam (2) close to the cyclone separator cylinder (9), the second pin hole is provided along the radial direction of the connecting crossbeam (2), and the second pin hole penetrates the connecting crossbeam (2); The connecting buckle also includes a crossbeam fastening structure, and the crossbeam fastening structure includes a fixing pin (6), and the fixing pin (6) passes through the first pin hole (7) and the second pin hole.

2. The cyclone separator central tube connection mechanism according to claim 1, characterized in that: Both ends of the fixing pin (6) are provided with threads; The crossbeam fastening structure also includes a fixing nut (8), the fixing nut (8) is provided with a thread matching the fixing pin (6), and the fixing nut (8) is connected to both ends of the fixing pin (6) through threads.

3. A cyclone separator with an anti-drop central tube, characterized in that: It comprises a central cylinder (1) and a cyclone separator cylinder (9), wherein the central cylinder (1) is arranged inside the cyclone separator cylinder (9); It also includes the cyclone separator central tube connection mechanism according to any one of claims 1 to 2, wherein two or more connecting cross beams (2) are provided, and the connecting cross beams (2) are evenly arranged along the outer circumference of the central tube (1); A plurality of connecting buckles are provided accordingly; a base (4) of the connecting buckle is fixed to a cyclone separator cylinder (9); and the connecting crossbeam (2) passes through a crossbeam through hole on the base (4) to be connected to the cyclone separator cylinder (9).

4. The cyclone separator with an anti-drop central tube according to claim 3, characterized in that: A plug-in hole (3) is provided at the connection between the cyclone separator cylinder (9) and the connecting crossbeam (2), and the connecting crossbeam (2) is inserted into the plug-in hole (3).

5. The cyclone separator with an anti-drop central tube according to claim 4, characterized in that: It also comprises a support frame (5), the support frame (5) is connected to the cyclone separator cylinder (9), a plug hole (3) is provided on the support frame (5), and the connecting crossbeam (2) is inserted into the plug hole (3).

6. The cyclone separator with an anti-drop central tube according to claim 5, characterized in that: The support frame (5) is snap-connected with the cyclone separator cylinder (9).

7. The cyclone separator with an anti-drop central tube according to claim 6, characterized in that: The connecting cross beam (2) is arranged at the same height along the central cylinder (1), and the plug-in hole (3) is arranged at the same height of the cyclone separator cylinder (9).

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