End socket for boiler pressure vessel

Abstract

The utility model discloses an end socket for a boiler pressure vessel, which relates to the technical field of special equipment and comprises an end socket shell, an inner container is arranged inside the end socket shell, a copper pipe is arranged between the inner container and the end socket shell, circulating pipes are arranged at two ends of the copper pipe, one end of each circulating pipe extends out of the end socket shell, and the other end of each circulating pipe extends out of the end socket shell. The extending ends of the two circulating pipes are jointly connected with a cooling liquid circulating pump, and a pressure relief pipe is arranged at the top end of the end socket shell. According to the seal head for the boiler pressure vessel, a series of structures are arranged, and the seal head for the boiler pressure vessel generates a cavity through boiler pressure through the inner container and the seal head shell, so that the firmness of the seal head for the boiler pressure vessel can be improved, and the seal head is prevented from being broken due to overlarge pressure, for example, the inner container is broken due to overlarge pressure; and metal scraps can be blocked by the end socket shell and cannot splash to damage personnel, so that the safety is high, impurities in gas are prevented from polluting the environment, and the sealing head is more environment-friendly.

Description

Technical Field

[0001] The utility model relates to the technical field of special equipment, in particular to a head for a boiler pressure vessel. Background Technique

[0002] Boiler pressure vessels are the full names of boilers and pressure vessels. Because they belong to special equipment, they play an important role in production and life. Equipment that has a specific process function and bears a certain pressure in industrial production is called a pressure vessel.

[0003] Most of the existing heads for boiler pressure vessels are of single-layer design. In the process of use, if they are unfortunately broken due to excessive pressure, there will be a phenomenon of metal debris splashing, which poses a certain potential safety hazard to the staff. Moreover, most of the existing heads for boiler pressure vessels directly discharge the gas during exhaust, without treating the gas. The gas may contain impurities or harmful substances, which has a certain impact on the environment. Content of the Utility Model

[0004] The purpose of the utility model is to provide a head for a boiler pressure vessel to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: A head for a boiler pressure vessel, including a head shell, an inner liner is arranged inside the head shell, a copper pipe is arranged between the inner liner and the head shell, both ends of the copper pipe are provided with circulation pipes, one ends of the two circulation pipes extend out of the head shell, and the extended ends of the two circulation pipes are jointly connected to a coolant circulation pump. A pressure relief pipe is arranged at the top of the head shell, the bottom of the pressure relief pipe extends to the top of the inner liner, a U-shaped pipe is arranged at the top of the pressure relief pipe, a wind box is arranged at the bottom of the U-shaped pipe, a plurality of air holes are arranged on the outer surface of the bottom of the wind box, and four pads are arranged on the inner wall of the wind box above the air holes. Two pads are in a group, and a support frame is jointly inserted between the two pads in each group. A filter element is arranged at the bottom of the support frame.

[0006] Preferably, a plurality of mounting brackets are equidistantly arranged on the outer surface of the bottom of the head shell. The mounting brackets connect the head shell to the flange ring to ensure the sealing performance of the head for the boiler pressure vessel.

[0007] Preferably, a pressure gauge is arranged on the outer surface of the pressure relief pipe near the top of the head shell, and a pressure relief valve is arranged on the outer surface of the pressure relief pipe above the pressure gauge. The pressure gauge is used to detect the air pressure data inside the boiler pressure vessel. If the pressure is too high, the pressure relief valve can be opened to relieve the pressure.

[0008] Preferably, one side of the support frame extends beyond one side of the air box. A pull ring is provided at the extended end of the support frame. Pulling the pull ring outwards can detach the support frame, facilitating the cleaning of the filter element.

[0009] Preferably, two fixing frames are provided at a position near the outer surface of the air box at the top of the pull ring. The fixing frames are connected to the air box by screws to fix the support frame and ensure its stability.

[0010] Preferably, a sealing groove is provided at the bottom of the head shell. A sealing gasket is arranged inside the sealing groove. When installing the head for a boiler pressure vessel, the opening of the boiler pressure vessel is inserted into the sealing groove, squeezing the sealing gasket to fill the gap and improve the sealing performance.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] 1. For the head of the boiler pressure vessel of the present utility model, the boiler pressure generates a cavity in the head through the inner liner and the head shell, so as to improve the firmness of the head of the boiler pressure vessel, avoid the head being broken due to excessive pressure. If the pressure is too high, the inner liner will be broken, and the metal debris will be blocked by the head shell and will not splash to cause injury to personnel, with high safety.

[0013] 2. For the head of the boiler pressure vessel of the present utility model, through the air box, when exhausting, since the gas may contain substances such as dust, when the gas enters the air box, the gas will be filtered by the filter element to purify the gas, and the purified gas will be discharged through the air holes, avoiding the pollution of the environment by the impurities in the gas and being more environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is the overall structural schematic diagram of the present utility model;

[0015] Figure 2 is the sectional structural schematic diagram of the head shell of the present utility model;

[0016] Figure 3 is the sectional structural schematic diagram of the air box of the present utility model.

[0017] In the figure: 1. Head shell; 2. Pressure relief valve; 3. Pressure relief pipe; 4. U-shaped pipe; 5. Air box; 6. Pressure gauge; 7. Coolant circulation pump; 8. Mounting rack; 9. Inner liner; 10. Circulation pipe; 11. Copper pipe; 12. Sealing gasket; 13. Sealing groove; 14. Air hole; 15. Backing plate; 16. Filter element; 17. Fixing frame; 18. Pull ring; 19. Support frame. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0019] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0020] As Figures 1 to 3 shown, the head for boiler pressure vessels in this embodiment includes a head shell 1. An inner liner 9 is arranged inside the head shell 1. A copper tube 11 is arranged between the inner liner 9 and the head shell 1, and a cavity is formed between the inner liner 9 and the head shell 1 to improve the firmness of the head for boiler pressure vessels. Both ends of the copper tube 11 are provided with circulation pipes 10. One ends of the two circulation pipes 10 extend out of the head shell 1. The extended ends of the two circulation pipes 10 are jointly connected to a coolant circulation pump 7. The coolant circulation pump 7 circulates the coolant inside the copper tube 11 through the circulation pipes 10 to keep the copper tube 11 in a low-temperature state, and cool down the high-temperature steam generated by the boiler pressure vessel. A pressure relief pipe 3 is arranged at the top of the head shell 1. The bottom of the pressure relief pipe 3 extends to the top of the inner liner 9. A U-shaped pipe 4 is arranged at the top of the pressure relief pipe 3. A wind box 5 is arranged at the bottom of the U-shaped pipe 4. A plurality of air holes 14 are arranged on the outer surface of the bottom of the wind box 5. Four pads 15 are arranged on the inner wall of the wind box 5 above the air holes 14. Two pads 15 are in a group. A support frame 19 is inserted between the two pads 15 in each group. A filter element 16 is arranged at the bottom of the support frame 19, which is filled with active adsorption substances such as activated carbon. When the pressure relief pipe 3 discharges steam, the gas will be transported inside the U-shaped pipe 4, and the gas may contain substances such as dust. When the gas enters the wind box 5, the gas will be filtered by the filter element 16 to purify the gas, and the purified gas will be discharged through the air holes 14.

[0021] Specifically, a plurality of mounting brackets 8 are equidistantly arranged on the outer surface of the bottom of the head shell 1. The mounting brackets 8 connect the head shell 1 to the flange ring to ensure the sealing performance of the head for boiler pressure vessels.

[0022] Further, a pressure gauge 6 is provided on the outer surface of the pressure relief pipe 3 near the top of the head shell 1. A pressure relief valve 2 is provided on the outer surface of the pressure relief pipe 3 above the pressure gauge 6. The pressure gauge 6 is used to detect the air pressure data inside the boiler pressure vessel. If the pressure is too high, the pressure relief valve 2 can be opened to relieve the pressure.

[0023] Further, one side of the support frame 19 extends out of one side of the air box 5. A pull ring 18 is provided at the extended end of the support frame 19. By pulling the pull ring 18 outwards, the support frame 19 can be disassembled, and the filter element 16 can be removed from the inside of the air box 5 to facilitate the cleaning of the filter element 16.

[0024] Further, two fixing frames 17 are provided at the top of the pull ring 18 near the outer surface of the air box 5. The fixing frames 17 are connected to the air box 5 by screws to fix the support frame 19 and ensure the stability of the support frame 19.

[0025] Furthermore, a sealing groove 13 is provided at the bottom of the head shell 1. A sealing gasket 12 is provided inside the sealing groove 13. When installing the head for the boiler pressure vessel, the opening of the boiler pressure vessel is inserted into the sealing groove 13, and the sealing gasket 12 is squeezed to fill the gap and improve the sealing performance.

[0026] The usage method of this embodiment is as follows: When installing the head for the boiler pressure vessel, the opening of the boiler pressure vessel is inserted into the sealing groove 13. The mounting frame 8 connects the head shell 1 with the flange ring. After the installation is tight, the opening of the boiler pressure vessel presses the sealing gasket 12 to fill the gap and improve the sealing performance. When the boiler is running, high-temperature steam will be generated. When the steam rises, it contacts the inner tank 9. The coolant circulation pump 7 circulates the coolant inside the copper pipe 11 through the circulation pipe 10 to keep the copper pipe 11 in a low-temperature state. The high-temperature steam is cooled by the inner tank 9. The pressure gauge 6 is used to detect the air pressure data inside the boiler pressure vessel. If the pressure is too high, the pressure relief valve 2 can be opened to relieve the pressure. The steam will enter the U-shaped pipe 4 through the pressure relief pipe 3 for transportation. The gas may contain substances such as dust. When the gas enters the air box 5, the gas will be filtered by the filter element 16 to purify the gas, and the purified gas will be discharged through the air holes 14.

[0027] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A head for a boiler pressure vessel, comprising a head shell (1), characterized in that: An inner liner (9) is arranged inside the head shell (1), a copper tube (11) is arranged between the inner liner (9) and the head shell (1), circulation tubes (10) are arranged at both ends of the copper tube (11), one end of each of the two circulation tubes (10) extends out of the head shell (1), the extended ends of the two circulation tubes (10) are connected to a coolant circulation pump (7), a pressure relief tube (3) is arranged at the top end of the head shell (1), and the bottom of the pressure relief tube (3) extends to the inner liner (9). 9), a U-shaped tube (4) is arranged at the top of the pressure relief tube (3), a bellows (5) is arranged at the bottom of the U-shaped tube (4), a plurality of air holes (14) are arranged on the outer surface of the bottom of the bellows (5), four pads (15) are arranged on the inner wall of the bellows (5) above the air holes (14), two of the pads (15) form a group, a support frame (19) is commonly inserted between the two pads (15) in each group, and a filter element (16) is arranged at the bottom of the support frame (19).

2. The boiler pressure vessel end cap according to claim 1, characterized in that: A plurality of mounting frames (8) are arranged at equal intervals on the bottom outer surface of the head shell (1).

3. The boiler pressure vessel end cap according to claim 1, characterized in that: A pressure gauge (6) is provided on the outer surface of the pressure relief pipe (3) near the top end of the head shell (1), and a pressure relief valve (2) is provided on the outer surface of the pressure relief pipe (3) above the pressure gauge (6).

4. The boiler pressure vessel end cap according to claim 1, characterized in that: One side of the support frame (19) extends out of one side of the bellows (5), and a pull ring (18) is provided at the extended end of the support frame (19).

5. The head for a boiler pressure vessel according to claim 4, characterized in that: Two fixing frames (17) are arranged at the top end of the pull ring (18) close to the outer surface of the bellows (5).

6. The end cap for a boiler pressure vessel according to claim 1, characterized in that: A sealing groove (13) is provided at the bottom of the sealing head shell (1), and a sealing gasket (12) is provided inside the sealing groove (13).

Images