CN221097597U - Pressure relief door - Google Patents

Abstract

The application relates to a pressure release door, which relates to the technical field of gas heating and comprises a connecting pipe fixedly connected to a hydrogen heating furnace, wherein the connecting pipe is communicated with the inside and the outside of the hydrogen heating furnace, and a rupture disc is arranged at one end of the connecting pipe extending to the outside of the hydrogen heating furnace so as to seal the hydrogen heating furnace and the connecting pipe.

Description

Pressure relief door

Technical Field

The application relates to the field of parts of boiler equipment, in particular to a pressure relief door.

Background

The main function of the hydrogen heating furnace is to heat hydrogen for other working procedures. A radiation and convection tube bundle is arranged in the heating furnace body, and the medium in the tube bundle is nitrogen-hydrogen mixed gas; the outside of the tube bundle is hot flue gas generated by the combustion of a burner arranged at the bottom of the heating furnace, and the flue gas and the nitrogen-hydrogen mixed gas transfer heat through the tube wall, so that the purpose of heating hydrogen is achieved.

In the related art, the hydrogen heating furnace can be used for a reducing agent heating device for a Direct Reduced Iron (DRI) process, the hydrogen heating furnace is of a cylindrical vertical structure, a radiation section and a convection section are arranged in the hydrogen heating furnace, a burner is arranged at the bottom of the furnace, hydrogen is led in from the convection section at the upper part of the heating furnace, is led out from the radiation section and enters a process system, fuel gas and air are ignited in the burner, high-temperature flame is generated to heat a heat exchange pipe in the radiation section, and is discharged into the atmosphere from a chimney at the top of the heating furnace after passing through the heat exchange pipe in the convection section.

In view of the above related art, there is room for improvement in the case of casualties and loss of industrial building internal equipment due to explosion of the hydrogen gas heating furnace caused by high pressure during heating.

Disclosure of utility model

In order to reduce the explosion of the hydrogen heating furnace caused by overlarge pressure in the heating process, ensure the life safety of personnel and the integrity of the internal equipment of the industrial building, and avoid the harm of explosion shock waves, the application provides a pressure relief door.

The application provides a pressure relief door, which adopts the following technical scheme:

the utility model provides a pressure release door, includes the takeover on fixed connection hydrogen heating furnace, the inside and outside takeover intercommunication hydrogen heating furnace, the one end that the takeover extends to the hydrogen heating furnace outside is equipped with the rupture disk to sealed hydrogen heating furnace and takeover.

Through adopting above-mentioned technical scheme, fixedly connected with lets in the takeover inside and outside the hydrogen heating furnace on the hydrogen heating furnace, be equipped with the rupture disk on the takeover, when hydrogen heating furnace internal pressure is great, the rupture disk takes place the blasting phenomenon to for the hydrogen heating furnace carries out the pressure release, reduces the inside pressure of furnace body, avoids taking place the explosion and causes loss of property and casualties.

Optionally, be equipped with first flange board on the takeover, first flange board fixed connection extends to the outer one end of hydrogen heating furnace in the takeover, first perforation has been seted up on the first flange board, one side that the takeover was kept away from to first flange board is equipped with the second flange board, the second perforation has been seted up on the second flange board, the rupture disk is located between first flange board and the second flange board, the third perforation has been seted up on the rupture disk, first perforation, second perforation and third perforation communicate each other.

Through adopting above-mentioned technical scheme, on the one hand, the setting of first flange board and second flange board provides the supporting point for the installation of rupture disk, on the other hand, when first through-hole, second through-hole and third through-hole communicate each other, the rupture disk can be comparatively accurate first flange board and second flange board of alignment.

Optionally, be equipped with the bolt on the first flange board, first perforation and first perforation are worn to establish to the bolt, be equipped with the nut on the bolt, nut threaded connection is on the bolt, one side butt that the nut is close to the takeover is in one side that the second flange board is kept away from the takeover.

Through adopting above-mentioned technical scheme, the bolt passes first through-hole, second through-hole and third through-hole, and nut threaded connection is on the bolt for first flange board and second flange board support tight rupture disk, and through bolt fixed connection, after the rupture disk blasting makes the hydrogen heating furnace carry out the pressure release, used rupture disk can dismantle down and change, has improved the reuse rate of pressure release door.

Optionally, be equipped with first asbestos rubber pad and second asbestos rubber pad on the first flange board, one side butt that first asbestos rubber pad is close to the takeover is kept away from one side of takeover in the first flange board, one side butt that first flange board was kept away from to first asbestos rubber pad is close to one side of first flange board in the rupture disk, one side butt that second asbestos rubber pad is close to the takeover is kept away from one side of takeover in the rupture disk, one side butt that second asbestos rubber pad kept away from first flange board is close to one side of takeover in the second flange board.

Through adopting above-mentioned technical scheme, the setting of first asbestos rubber pad and second asbestos rubber pad, when the nut supports tightly in the second flange board, first asbestos rubber pad is located between first flange board and the rupture disk to reduce the wearing and tearing of first flange board to the rupture disk, the second asbestos rubber pad is located between second flange board and the rupture disk, thereby reduce the wearing and tearing of second flange board to the rupture disk, improved the life of rupture disk.

Optionally, one side of taking over is kept away from to first flange board fixedly connected with fixed column, the rupture disk cover is located on the fixed column, fixedly connected with lug on the periphery lateral wall of fixed column, one side butt that the lug is close to the taking over is on one side of taking over is kept away from to the second flange board.

Through adopting above-mentioned technical scheme, the setting of fixed column for the second through-hole on the second flange board and the third through-hole on the rupture disk can pass the fixed column in proper order, and the lug butt is on the second flange board, thereby is fixed in on first flange board with rupture disk and the second flange board.

Optionally, the standing groove has been seted up on the fixed column, the lug inlays and establishes and sliding connection is in the standing groove, be equipped with the dog on the fixed column, dog fixed connection is in the notch of standing groove, one side fixedly connected with limiting plate that the lug is close to the tank bottom of standing groove, one side butt that one side that the tank bottom was kept away from to the limiting plate is close to the tank bottom of standing groove in the dog.

Through adopting above-mentioned technical scheme, the setting of standing groove, when the third through-hole on the rupture disk passed the fixed column, the lug can inlay in the standing groove, avoids the lug to stop on the third through-hole was worn to locate the fixed column, limiting plate butt on the baffle, avoids the lug to need not when using, the lug drops from the standing groove.

Optionally, the device further comprises a compression spring, wherein the compression spring is embedded in the placing groove, one end of the compression spring is abutted against one side, close to the groove bottom of the placing groove, of the protruding block, and the other end of the compression spring is abutted against the groove bottom wall of the placing groove.

Through adopting above-mentioned technical scheme, compression spring's setting for after the fixed column was worn to locate by the third through-hole on the rupture disk, compression spring can promote the lug outside the standing groove from the standing groove according to self elasticity, thereby the butt second flange board, improved the removal efficiency of lug.

Optionally, a guiding surface is provided on a side of the bump away from the second flange plate.

Through adopting above-mentioned technical scheme, the guide surface has been seted up to one side that first flange board was kept away from to the lug, and when the rupture disk worn to locate the fixed column, the guide surface can guide the lug withdrawal standing groove to need not the hand and press the lug back in the standing groove.

Optionally, the adapter tube is internally clamped with a ceramic fiber module, and the ceramic fiber module is abutted to one side of the rupture disc, which is close to the adapter tube.

By adopting the technical scheme, the ceramic fiber module is filled with the connecting pipe, so that the higher temperature in the furnace body is transferred to the rupture disk when the hydrogen heating furnace is in heating operation, and the rupture disk is damaged under the high-temperature environment for a long time.

In summary, the present application includes at least one of the following beneficial technical effects:

1. The connecting pipe inside and outside the hydrogen gas heating furnace is fixedly connected to the hydrogen gas heating furnace, the connecting pipe is provided with the rupture disk, and when the internal pressure of the hydrogen gas heating furnace is high, the rupture disk is exploded, so that the pressure of the hydrogen gas heating furnace is relieved, the internal pressure of the furnace body is reduced, and property loss and casualties caused by explosion are avoided;

2. the first asbestos rubber pad is arranged between the first flange plate and the rupture disc when the nut is abutted against the second flange plate, so that abrasion of the first flange plate to the rupture disc is reduced, and the service life of the rupture disc is prolonged;

3. The ceramic fiber module is filled with the connecting pipe, so that the higher temperature in the furnace body is prevented from being transferred to the rupture disk when the hydrogen heating furnace is in heating operation, and the rupture disk is damaged under the high-temperature environment for a long time.

Drawings

Fig. 1 is a schematic diagram of the overall structure of a pressure release door in embodiment 1 of the present application.

Fig. 2 is a bottom view of a pressure relief door according to embodiment 1 of the present application.

Fig. 3 is a cross-sectional view taken along the direction A-A in fig. 2.

Fig. 4 is an enlarged view of a portion B in fig. 3.

Fig. 5 is a schematic diagram of the overall structure of a pressure release door in embodiment 2 of the present application.

Fig. 6 is a bottom view of a pressure release door according to embodiment 2 of the present application.

Fig. 7 is a cross-sectional view taken along the direction C-C in fig. 6.

Fig. 8 is an enlarged view of a portion D in fig. 7.

Reference numerals illustrate: 1. rupture disk; 11. a third through hole; 2. connecting pipe; 21. a ceramic fiber module; 3. a fixing assembly; 31. a first flange plate; 311. a first through hole; 312. a first through hole; 32. a second flange plate; 321. a second through hole; 322. a second through hole; 33. a first asbestos rubber pad; 34. a second asbestos rubber pad; 35. a bolt; 351. a nut; 36. fixing the column; 361. a placement groove; 362. a stop block; 363. a compression spring; 37. a bump; 371. a limiting plate; 372. a guide surface.

Detailed Description

The application is described in further detail below with reference to fig. 1-8.

The embodiment of the application discloses a pressure relief door.

Example 1

Referring to fig. 1 and 2, a pressure relief door includes a rupture disk 1, a nipple 2, and a securing assembly 3. The connecting pipe 2 is fixedly connected in the hydrogen heating furnace and communicated with the inside and the outside of the hydrogen heating furnace so as to release the pressure in the hydrogen heating furnace. The rupture disk 1 is arranged at one end of the connecting pipe 2 extending to the outside of the hydrogen heating furnace and is used for sealing the hydrogen heating furnace and the connecting pipe 2. The rupture disk 1 is fixedly connected with one end of the connecting pipe 2 extending to the outside of the hydrogen heating furnace through the fixing component 3.

Referring to fig. 3 and 4, the fixing assembly 3 includes a first flange plate 31, a second flange plate 32, a first asbestos rubber pad 33, a second asbestos rubber pad 34, and a plurality of bolts 35. The first flange plate 31 is integrally arranged at one end of the connecting pipe 2 extending out of the hydrogen heating furnace, and the first flange plate 31 and the connecting pipe 2 are mutually perpendicular, so that a supporting point is provided for fixing the rupture disk 1. The first through hole 311 is formed in the first flange plate 31, so that gas in the hydrogen heating furnace can be in contact with the rupture disk 1, and the rupture disk 1 is exploded when the air pressure in the hydrogen heating furnace is increased, so that pressure relief is performed. The rupture disk 1 is located between first flange plate 31 and second flange plate 32, and the one side butt that takes over 2 was kept away from to first flange plate 31 is close to one side of first flange plate 31 in rupture disk 1, and one side butt that first flange plate 31 was kept away from to rupture disk 1 is close to one side of taking over 2 in second flange plate 32 for first flange plate 31 and second flange plate 32 can fix rupture disk 1. The second flange plate 32 is provided with a second penetrating hole 321, so that the rupture disk 1 can be burst open along the direction from the adapter tube 2 to the second flange plate 32 for pressure relief. The rupture disk 1 may be a positive arch, a negative arch or a flat plate, and in the embodiment of the present application, the negative arch rupture disk 1 is taken as an example.

Referring to fig. 4, the first flange plate 31 is provided with a plurality of through holes 312, the second flange plate 32 is provided with a second through hole 322, and the rupture disk 1 is provided with a third through hole 11, so that the first flange plate 31, the rupture disk 1 and the second flange plate 32 can be aligned accurately and tightly against each other. The first through holes 312, the second through holes 322 and the third through holes 11 are respectively penetrated in a one-to-one correspondence manner by the bolts 35, nuts 351 are connected to the bolts 35 in a threaded manner, one side, close to the first flange plate 31, of the nuts 351 is abutted against one side, far away from the rupture disc 1, of the second flange plate 32, so that the first flange plate 31, the rupture disc 1 and the second flange plate 32 are fixed by the bolts 35, and the rupture disc 1 can be detached after being used, and the new rupture disc 1 can be replaced. In the embodiment of the present application, the number of bolts 35 and nuts 351 is eight and corresponds one to one.

Referring to fig. 3 and 4, the first asbestos rubber pad 33 is located between the first flange plate 31 and the rupture disk 1, the side of the first asbestos rubber pad 33 near the adapter tube 2 abuts against the side of the first flange plate 31 far away from the adapter tube 2, the side of the first asbestos rubber pad 33 far away from the adapter tube 2 abuts against the side of the rupture disk 1 near the first flange plate 31, and the first flange plate 31 is prevented from wearing the rupture disk 1. The second asbestos rubber pad 34 is located between the second flange plate 32 and the rupture disk 1, one side of the second asbestos rubber pad 34, which is close to the connecting pipe 2, is abutted to one side of the rupture disk 1, which is far away from the connecting pipe 2, and one side of the second asbestos rubber pad 34, which is far away from the first flange plate 31, is abutted to one side of the second flange plate 32, which is close to the first flange plate 31, so that the rupture disk 1 is prevented from being worn by the second flange plate 32.

Referring to fig. 3, a ceramic fiber module 21 is clamped in the connecting tube 2, and the ceramic fiber module 21 is abutted against one side of the rupture disk 1, which is close to the connecting tube 2, so that the temperature in the hydrogen heating furnace is reduced and transmitted to the rupture disk 1.

The implementation principle of the embodiment 1 is as follows: the connecting pipe 2 is fixedly connected in the hydrogen heating furnace, then one end of the connecting pipe 2, which is fixedly connected with the first flange plate 31, is exposed out of the hydrogen heating furnace, the bolt 35 penetrates through the first through hole 312 in the first flange plate 31, the first asbestos rubber pad 33 is sleeved on the bolt 35, the rupture disc 1 is sleeved on the bolt 35, the second asbestos rubber pad 34 is sleeved on the bolt 35, the second flange plate 32 is sleeved on the bolt 35, and finally the nut 351 is in threaded connection with the bolt 35, so that the first flange plate 31, the rupture disc 1 and the second flange plate 32 are mutually compressed, when the air pressure in the hydrogen heating furnace is too high, the rupture disc 1 is exploded, the hydrogen heating furnace starts to release pressure, and a worker removes the bolt 35 to replace the used rupture disc 1 with a new rupture disc 1.

Example 2

Referring to fig. 5 and 6, the present embodiment is different from embodiment 1 in that the fixing member 3 includes a plurality of fixing posts 36 and a plurality of projections 37. The plurality of fixing columns 36 are uniformly arranged on one side of the first flange plate 31 far away from the connecting pipe 2, and the plurality of fixing columns 36 are uniformly arranged along the circumferential side wall of the first flange plate 31 to provide supporting points for fixing the rupture disk 1 and the second flange plate 32.

Referring to fig. 7 and 8, the protruding block 37 is fixedly connected to the outer circumferential sidewall of the fixing column 36, and one side of the protruding block 37 close to the first flange plate 31 abuts against one side of the second flange plate 32 far away from the rupture disc 1, so that the first flange plate 31, the first asbestos rubber pad 33, the rupture disc 1, the second asbestos rubber pad 34 and the second flange plate 32 are all abutted tightly and fixed. In the embodiment of the present application, the number of the fixing posts 36 is eight, and the number of the protruding blocks 37 on each fixing post 36 is four.

Referring to fig. 7 and 8, the fixing post 36 is provided with a placement groove 361, and the protruding block 37 is embedded and slides in the placement groove 361, so that when the rupture disk 1 is sleeved on the fixing post 36, the protruding block 37 can retract into the placement groove 361. The fixed column 36 is integrally provided with a stop block 362, the stop block 362 is positioned at the notch of the placing groove 361, one side of the bump 37 close to the bottom wall of the placing groove 361 is fixedly connected with a limit plate 371, and one side of the limit plate 371 away from the bottom wall of the placing groove 361 is abutted against one side of the stop block 362 close to the bottom wall of the placing groove 361, so that the bump 37 is prevented from being separated from the placing groove 361. Install compression spring 363 on the fixed column 36, compression spring 363 one end butt is on the groove diapire of standing groove 361, and compression spring 363 the other end butt is on limiting plate 371 is close to the one side of the tank bottom wall of standing groove 361 for after the fixed column 36 was located to rupture disk 1 cover, compression spring 363 can push out the lug 37 and put the groove 361. A guide surface 372 is provided on a side of the projection 37 away from the rupture disk 1, and the projection 37 is guided to move in the direction of the placement groove 361.

The implementation principle of the embodiment 2 is as follows: the connecting pipe 2 is fixedly connected in the hydrogen heating furnace, one end of the connecting pipe 2, which is fixedly connected with the first flange plate 31, is exposed out of the hydrogen heating furnace, the first asbestos rubber pad 33 is sleeved on the fixed column 36, the rupture disc 1 is sleeved on the fixed column 36, the second asbestos rubber pad 34 is sleeved on the fixed column 36, the second flange plate 32 is sleeved on the fixed column 36, the bump 37 extends out of the placing groove 361, so that the second flange plate 32 is abutted, when the air pressure in the hydrogen heating furnace is too high, the rupture disc 1 is exploded, the hydrogen heating furnace starts to release pressure, the worker presses the bump 37 into the placing groove 361, and the used rupture disc 1 is replaced by a new rupture disc 1.

The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims (7)

1. A pressure relief door, characterized in that: the device comprises a connecting pipe (2) fixedly connected to a hydrogen heating furnace, wherein the connecting pipe (2) is communicated with the inside and the outside of the hydrogen heating furnace, and a rupture disc (1) is arranged at one end of the connecting pipe (2) extending to the outside of the hydrogen heating furnace so as to seal the hydrogen heating furnace and the connecting pipe (2);

The hydrogen heating furnace is characterized in that a first flange plate (31) is arranged on the connecting pipe (2), the first flange plate (31) is fixedly connected to one end of the connecting pipe (2) extending out of the hydrogen heating furnace, a first through hole (312) is formed in the first flange plate (31), a first through hole (311) is formed in the first flange plate (31), a second flange plate (32) is arranged on one side, away from the connecting pipe (2), of the first flange plate (31), a second through hole (322) is formed in the second flange plate (32), a second through hole (321) is formed in the second flange plate (32), a rupture disc (1) is arranged between the first flange plate (31) and the second flange plate (32), a third through hole (11) is formed in the rupture disc (1), and the first through hole (312), the second through hole (322) and the third through hole (11) are mutually communicated;

Be equipped with a plurality of bolts (35) on first flange board (31), a plurality of bolt (35) are even a pair of corresponding wears to establish first through-hole (312), second through-hole (322) and third through-hole (11), a plurality of all be equipped with nut (351) on bolt (35), nut (351) threaded connection is on bolt (35), a plurality of one side butt that nut (351) are close to take over (2) is in one side that take over (2) was kept away from to second flange board (32).

2. The pressure relief door of claim 1, wherein: be equipped with first asbestos rubber pad (33) and second asbestos rubber pad (34) on first flange board (31), one side butt that first asbestos rubber pad (33) is close to takeover (2) is kept away from one side of takeover (2) in first flange board (31), one side butt that first flange board (31) was kept away from to first asbestos rubber pad (33) is close to one side of first flange board (31) in rupture disk (1), one side butt that second asbestos rubber pad (34) is close to takeover (2) is kept away from one side of takeover (2) in rupture disk (1), one side butt that first flange board (31) was kept away from in second flange board (32) is close to one side of takeover (2).

3. The pressure relief door of claim 1, wherein: one side of taking over (2) is kept away from to first flange board (31) fixedly connected with a plurality of fixed columns (36), on fixed column (36) are located to rupture disk (1) cover, a plurality of fixedly connected with lug (37) on the periphery lateral wall of fixed column (36), one side butt that lug (37) are close to take over (2) is on one side of taking over (2) is kept away from to second flange board (32).

4. A pressure relief door as claimed in claim 3, wherein: the utility model discloses a recess is formed in fixed column (36), recess (361) has been seted up on fixed column (36), lug (37) inlay and sliding connection is in recess (361), be equipped with dog (362) on fixed column (36), dog (362) fixedly connected with notch in recess (361), one side that lug (37) are close to the tank bottom of recess (361) fixedly connected with limiting plate (371), one side butt in one side that the tank bottom of recess (361) was kept away from to limiting plate (371) is close to the tank bottom of recess (361) in dog (362).

5. The pressure relief door of claim 4, wherein: the novel anti-theft device is characterized by further comprising a compression spring (363), wherein the compression spring (363) is embedded in the placing groove (361), one end of the compression spring (363) is abutted against one side, close to the groove bottom of the placing groove (361), of the protruding block (37), and the other end of the compression spring (363) is abutted against the groove bottom wall of the placing groove (361).

6. The pressure relief door of claim 5, wherein: a guide surface (372) is arranged on one side of the protruding block (37) far away from the second flange plate (32).

7. The pressure relief door of claim 6, wherein: the ceramic fiber module (21) is clamped in the connecting pipe (2), and the ceramic fiber module (21) is abutted to one side, close to the connecting pipe (2), of the rupture disc (1).