CN221034484U - Leakage-proof connecting device for boiler tube - Google Patents

Abstract

The utility model belongs to the technical field of boiler pipelines, and specifically relates to a leakage-proof connection device for boiler furnace tubes. The utility model provides a leakage-proof connection device for boiler furnace tubes, comprising a furnace tube and a connection mechanism, wherein the connection mechanism comprises two connection flanges and a support tube, a connection sleeve is vertically arranged at the bottom of the connection flange, the connection sleeve is arranged on the outer wall of one end of the furnace tube, the support tube is located on the inner wall of one end of the furnace tube, a sealing groove is arranged at the bottom of the connection sleeve, one side of the sealing groove is fixedly connected to one end of the support tube by a plurality of screws, a first rubber sealing pad is arranged on the sealing groove, and the two connection flanges are fixedly connected by a plurality of corresponding bolts and nuts.

Description

A leak-proof connection device for boiler tubes

Technical Field

The utility model belongs to the technical field of boiler pipes, and in particular relates to a leakage-proof connecting device for boiler pipes.

Background technique

A boiler is an energy conversion device. The energy input to the boiler includes chemical energy and electrical energy in the fuel. The boiler outputs steam, high-temperature water or organic heat carrier with a certain amount of thermal energy. The hot water or steam produced in the boiler can directly provide the required thermal energy for industrial production and people's lives, or it can be converted into mechanical energy through a steam power device, or the mechanical energy can be converted into electrical energy through a generator. A boiler that provides hot water is called a hot water boiler, which is mainly used for life and also has a small number of applications in industrial production. A boiler that produces steam is called a steam boiler, often referred to as a boiler, and is mostly used in thermal power plants, ships, locomotives and industrial and mining enterprises.

The boiler needs to be connected through furnace tubes during use, and the airtightness between the two connected furnace tubes becomes a major problem. During use, hot water or steam usually flows inside the furnace tubes of the boiler, and the tube walls in contact with the hot water or steam will expand due to the heat. This is particularly evident at the joints of the furnace tubes, and due to the high pressure inside the furnace tubes, the joints of the furnace tubes are prone to leakage. Currently, furnace tube connection devices are mostly sealed and connected by welding, flange connection or interlocking clamps when in use. However, connection by welding will make it impossible to separate the pipes, which is inconvenient for maintenance and cleaning of the pipes. When connecting by flange connection or interlocking clamps, due to the small number of sealing structures used in the connection, the sealing components such as the rubber sealing pads inside the connection are always in contact with the hot water or steam inside the furnace tube, which shortens their service life. Therefore, a connection device is needed that can facilitate the separation of the pipes and can effectively prevent leakage when the sealing structure is aged or fails.

Utility Model Content

In order to solve the problems existing in the background technology, the utility model provides a leakage-proof connection device for boiler tubes.

The utility model provides an anti-leakage connection device for a boiler furnace tube, comprising a furnace tube and a connection mechanism, wherein the connection mechanism comprises two connection flanges and a support pipe, a connection sleeve is vertically arranged at the bottom of the connection flange, the connection sleeve is sleeved on the outer wall of one end of the furnace tube, the support pipe is located on the inner wall of one end of the furnace tube, a sealing groove is arranged at the bottom of the connection sleeve, one side of the sealing groove is fixedly connected to one end of the support pipe by a plurality of screws, a first rubber sealing pad is arranged on the sealing groove, and the two connection flanges are fixedly connected by a plurality of corresponding bolts and nuts.

Furthermore, the two connecting flanges are respectively a first flange and a second flange, and corresponding convex blocks and concave grooves are provided at the contact and fastening parts between the connecting sleeve where the first flange is located and the connecting sleeve where the bottom of the second flange is located.

Furthermore, the cross-section of the connecting sleeve is an overall L-shaped structure, the thickness of the connection between the two connecting sleeves is greater than the thickness of the sleeve on the outer wall of the furnace tube, and the shape of the inner wall of the support tube matches the lower end of the inner side of the connecting sleeve connected to the furnace tube.

Furthermore, a second rubber sealing pad is provided at the contact position between the furnace tube and the support tube and the connecting sleeve.

Furthermore, the support tube corresponds to the position of the outside of the connecting sleeve, the side of the outer side of the support tube that contacts the inner wall of the furnace tube has a conical structure, and the diameter of the support tube at one end close to the connecting sleeve is larger than the diameter of the end away from the connecting sleeve, and a guide platform is provided on the edge of the end of the support tube away from the connecting sleeve.

Furthermore, two sides of the first rubber sealing pad abut against the sealing grooves on the connecting sleeves below the two connecting flanges, and one end of the first rubber sealing pad is located on the sealing groove and is provided with a sealing buckle.

Beneficial effects of the utility model:

The leakage-proof connection device supports the interface of the furnace tube from the inside by arranging a support tube inside the furnace tube, determines the positions of the connection sleeve and the connection flange, and seals the connection tube and the furnace tube through a rubber sealing pad. Meanwhile, a rubber sealing pad is arranged at the connection of the two connection flanges, and a sealing buckle is arranged at the edge of the rubber sealing pad, thereby increasing the service life and sealing effect of the sealing pad.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a structural diagram of a leakage-proof connection device for boiler tubes of the utility model.

FIG. 2 is a cross-sectional structural diagram of a leakage-proof connection device for boiler tubes according to the utility model.

FIG3 is an enlarged view of the structure of location A of a leakage-proof connection device for boiler tubes of the utility model.

FIG. 4 is an exploded structural diagram of a leakage-proof connection device for boiler tubes of the utility model.

(1. furnace tube; 2. connecting flange; 3. supporting tube; 4. connecting sleeve; 5. sealing slot; 6. multiple screws; 7. first rubber sealing pad; 8. bolts; 9. nuts; 10. first flange; 11. second flange; 12. convex block; 13. concave slot; 14. second rubber sealing pad; 15. guide platform; 16. sealing buckle)

Detailed ways

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 in 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.

In the description of the utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

Embodiment 1:

Please refer to Figures 1-4. The utility model provides a leakage-proof connection device for a boiler tube 1, comprising a tube 1 and a connection mechanism, wherein the connection mechanism comprises two connection flanges 2 and a support pipe 3, wherein the two connection flanges 2 are respectively a first flange 10 and a second flange 11, and corresponding convex clamping blocks 12 and concave clamping grooves 13 are provided at the contact and buckling positions between the connection sleeve 4 where the first flange 10 is located and the connection sleeve 4 where the bottom of the second flange 11 is located;

In the utility model, a connecting sleeve 4 is vertically arranged at the bottom of the connecting flange 2, and the connecting sleeve 4 is sleeved on the outer wall of one end of the furnace tube 1. The cross section of the connecting sleeve 4 is an L-shaped structure as a whole. The thickness of the connection between the two connecting sleeves 4 is greater than the thickness of the outer wall of the furnace tube 1, wherein the inner side of the connecting sleeve 4 is connected to the furnace tube 1 and the lower part matches the inner wall shape of the support tube 3;

In the utility model, the support tube 3 is located on the inner wall of one end of the furnace tube 1, and a sealing groove 5 is provided at the bottom of the connecting sleeve 4. One side of the sealing groove 5 is fixedly connected to one end of the support tube 3 by a plurality of screws 6. A second rubber sealing pad 14 is provided at the contact position between the furnace tube 1 and the support tube 3 and the connecting sleeve 4. The positions of the support tube 3 and the outside of the connecting sleeve 4 correspond to each other. The side of the outer side of the support tube 3 that contacts the inner wall of the furnace tube 1 is in a conical structure, and the diameter of the support tube 3 at one end close to the connecting sleeve 4 is larger than the diameter at the end away from the connecting sleeve 4. A guide platform 15 is provided at the edge of the end of the support tube 3 away from the connecting sleeve 4.

In the utility model, a first rubber sealing pad 7 is arranged on the sealing groove 5, and both sides of the first rubber sealing pad 7 are against the sealing groove 5 on the connecting sleeve 4 below the two connecting flanges 2, and one end of the first rubber sealing pad 7 is located on the sealing groove 5 and a sealing buckle 16 is arranged, and the two connecting flanges 2 are fixedly connected by a plurality of corresponding bolts 8 and nuts 9.

The working principle of the utility model is as follows: the support tube 3 is installed from one end of the furnace tube 1. Since the support tube 3 is tapered as a whole, the support tube 3 can fit tightly with one end of the furnace tube 1. Then the connecting sleeve 4 is sleeved on the outer side of the furnace tube 1 at this end, so that the tube wall of the furnace tube 1 is abutted against the second rubber sealing gasket 14 on one side of the L-shaped structure of the connecting sleeve 4, and the support tube 3 is fixedly connected to the connecting sleeve 4 by a plurality of screws 6, so that one end of the furnace tube 1 is sealed and connected to the connecting sleeve 4. Then, after one end of the other furnace tube 1 is installed in the same way, the connecting sleeves 4 on both sides are buckled, the first rubber sealing gasket 7 is located at the sealing groove 5 between the two connecting sleeves 4, the convex block 12 and the concave groove 13 between the connecting sleeves 4 are buckled, and finally the two connecting flanges 2 are connected and fixed by the cooperation of bolts 8 and nuts 9.

The above describes the utility model and its implementation methods, which are not restrictive. The specific implementation method is only one of the implementation methods of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it, without departing from the purpose of the invention of the utility model, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the utility model.

Claims (6)

1. The utility model provides a boiler furnace leak protection connecting device, includes boiler tube and coupling mechanism, its characterized in that: the connecting mechanism comprises two connecting flanges and a supporting tube, wherein the bottom of each connecting flange is vertically provided with a connecting sleeve, each connecting sleeve is sleeved on the outer wall of one end of each furnace tube, each supporting tube is located on the inner wall of one end of each furnace tube, a sealing clamping groove is formed in the bottom of each connecting sleeve, one side of each sealing clamping groove is fixedly connected with one end of each supporting tube through a plurality of screws, a first rubber sealing gasket is arranged on each sealing clamping groove, and two connecting flanges are fixedly connected through a plurality of corresponding bolts and nuts.

2. The leak-proof connecting device for boiler tubes according to claim 1, wherein: the two connecting flanges are a first flange and a second flange respectively, and a corresponding convex clamping block and a corresponding concave clamping groove are arranged at the contact buckling position between the connecting sleeve where the first flange is positioned and the connecting sleeve where the bottom of the second flange is positioned.

3. The leak-proof connecting device for boiler tubes according to claim 1, wherein: the whole L-shaped structure that is of cross section of adapter sleeve, the thickness of junction between two the adapter sleeve is greater than the cover and establishes the thickness in boiler tube outer wall department, wherein adapter sleeve inboard and boiler tube connection's one end below and the inner wall shape phase-match of stay tube.

4. The leak-proof connecting device for boiler tubes according to claim 1, wherein: and a second rubber sealing gasket is arranged at the contact position between the furnace tube and the supporting tube and the connecting sleeve.

5. The leak-proof connecting device for boiler tubes according to claim 1, wherein: the support tube corresponds to the position outside the connecting sleeve, one surface, which is in contact with the inner wall of the furnace tube, of the outer side of the support tube is of a conical structure, the diameter of one end, which is close to the connecting sleeve, of the support tube is larger than that of one end, which is far away from the connecting sleeve, of the support tube, and a guide table is arranged at the edge of one end, which is far away from the connecting sleeve, of the support tube.

6. The leak-proof connecting device for boiler tubes according to claim 1, wherein: the two sides of the first rubber sealing gasket are propped against the sealing clamping grooves on the connecting sleeves below the two connecting flanges, and sealing buckles are arranged on the sealing clamping grooves at one end of the first rubber sealing gasket.