CN113351117B

CN113351117B - Threaded quick-opening autoclave cover self-tightening sealing structure

Info

Publication number: CN113351117B
Application number: CN202110915982.7A
Authority: CN
Inventors: 孙宪林; 遇广志; 李�浩; 宫昭龙
Original assignee: Shandong Fuer Special Equipment Co ltd
Current assignee: Shandong Fuer Special Equipment Co ltd
Priority date: 2021-08-11
Filing date: 2021-08-11
Publication date: 2021-10-22
Anticipated expiration: 2041-08-11
Also published as: CN113351117A

Abstract

The invention discloses a self-tightening sealing structure of a threaded quick-opening autoclave cover, and relates to the technical field of chemical production equipment. The invention comprises an outer sleeve, an inner container, a fixed bolt rod and a sealing gland, wherein the sealing gland and the outer sleeve are fixedly inserted and connected through the fixed bolt rod; the inner container is internally provided with a gas pressure plug and is connected with the fixed bolt rod. According to the invention, the outer sleeve and the fixing bolt rod are arranged outside the inner container, the air pressure plug is arranged inside the inner container, when the inner container is used as a reactor, the temperature and the pressure inside the inner container are raised due to reaction, so that the pressure is generated on the air pressure plug to enable the air pressure plug to slide downwards, the connecting disc and the fixing bolt rod are driven, and the sealing gland is driven to compress the composite tank body, so that the sealing gland is pressed more and more tightly along with the reaction propulsion in the working process; in addition, through setting up pressure discharge pipe, pressure discharge valve and pressure discharge bolt, utilize check valve structure and piston structure, can exhaust air and utilize the position of atmospheric pressure fixed connection pad when the connection pad pushes down, avoid it to reset in the reaction process or because of inner bag internal pressure fluctuation.

Description

Threaded quick-opening autoclave cover self-tightening sealing structure

Technical Field

The invention belongs to the technical field of chemical production equipment, and particularly relates to a self-tightening sealing structure of a threaded quick-opening autoclave cover.

Background

In the existing chemical production technology, an autoclave is a relatively common reaction device; in actual use, the reaction is more sufficient by limiting the high-pressure environment of the internal reaction site; therefore, in the sealed environment inside the autoclave, the pressure inside the autoclave changes and even fluctuates along with the advancing of the reaction process; the cover of the existing autoclave is usually compressed by a simple and rigid bolt when being compressed and fixed, and is easy to loosen under the internal pressure fluctuation; therefore, for the problem, we design a screw thread type quick-opening autoclave cover self-tightening sealing structure.

Disclosure of Invention

The invention aims to provide a self-tightening sealing structure of a threaded quick-opening autoclave cover, which solves the problem that the autoclave cover is loosened due to pressure fluctuation generated along with the propulsion of the internal environment of the existing autoclave along with the reaction process.

In order to solve the technical problems, the invention is realized by the following technical scheme:

the invention relates to a self-tightening sealing structure of a threaded quick-opening autoclave cover, which comprises a composite tank body, a sealing gland and a fixed bolt rod, wherein the composite tank body comprises an outer sleeve and an inner container, the outer sleeve is sleeved with the inner container and is fixed by welding, and the sealing gland is sleeved with the outer sleeve; wherein the inner container is a high-pressure reaction place, namely an internal reactor of the high-pressure kettle; the outer sleeve and the sealing gland are fixedly inserted through a plurality of fixing bolt rods, and the inner container is arranged among the fixing bolt rods;

the inner bottom surface of the inner container is welded and communicated with a pneumatic tube, the inner part of the inner container is communicated with the inner part of the outer sleeve through the pneumatic tube, and a pneumatic plug is arranged in the pneumatic tube, so that when the pressure in the inner container is increased due to the propulsion in the reaction process, the pneumatic plug can be pushed to slide downwards; the lower end face of the air pressure plug is welded with a connecting disc, the connecting disc is positioned below the pipe orifice of the air pressure pipe, and the air pressure plug cannot be separated from the outside of the air pressure pipe; the upper surface of the connecting disc is fixedly bolted with a plurality of fixing bolts, and the connecting disc and the fixing bolts are sequentially driven to slide when the air pressure plug slides; the inner surface of the outer sleeve is welded and communicated with a plurality of sleeves, and the sleeves are nested and matched with the fixed bolt rods.

Further, the fixing bolt rod is in sliding fit with the sleeve; a plurality of limiting sliding grooves are formed in the inner surface of the sleeve, and the peripheral side face of the fixed bolt rod is clamped with the limiting sliding grooves through a plurality of protrusions, so that the fixed bolt rod is limited and prevented from rotating inside the sleeve.

Furthermore, the peripheral side surface of the fixed bolt rod is in threaded connection with a pressure nut, the pressure nut is installed above the sealing gland and is in contact with the sealing gland, and the pressure nut is matched with the sealing gland and used for fixedly pressing the inner container of the high-pressure kettle.

Furthermore, an installation platform is welded on the upper surface of the outer sleeve, and the sealing gland is of a dish-shaped cover structure and is sleeved with the installation platform; and a sealing rubber gasket is arranged between the sealing gland and the mounting table to strengthen the sealing structure between the sealing gland and the autoclave.

Furthermore, a pressure measuring pipe is connected to the upper surface of the sealing pressure cover through a flange and is communicated with the inner container; the upper surface of the pressure measuring pipe is connected with a pressure gauge in a bolting mode; a safety valve is arranged in the pressure gauge and is matched with the inner container; when the pressure in the inner container is higher than the set pressure value of the pressure gauge, the safety valve can be used for deflation, and safety accidents of the high-pressure kettle are avoided.

Furthermore, a pressure relief pipe is welded on the inner bottom surface of the outer sleeve, a pressure relief bolt is welded on the lower surface of the connecting disc, and the pressure relief bolt and the pressure relief pipe form a piston structure; one end of the pressure discharge pipe extends to the outside of the outer sleeve, a pressure discharge valve is arranged inside the pressure discharge pipe, the pressure discharge valve is of a one-way valve structure, and a pressure discharge cap is welded on one end face of the pressure discharge valve; the air pressure plug and the air pressure pipe form a piston structure; the pressure discharge cap is arranged outside the pressure discharge pipe; the pressure relief pipe and the pressure relief bolt of piston structure mutually support with the pressure relief valve of check valve structure, can be when the connection pad pressurized descends with the air escape in the pressure relief pipe, utilize atmospheric pressure effect to prevent the connection pad and reset, be convenient for keep gland's the state that compresses tightly.

Furthermore, a spring is welded between the connecting disc and the inner bottom surface of the outer sleeve, so that the connecting disc and the fixed bolt rod can be quickly reset in standby; the periphery of the neck of the inner container is welded and communicated with a plurality of feeding pipes.

The invention has the following beneficial effects:

according to the invention, the outer sleeve and the fixing bolt rod are arranged outside the inner container, the air pressure plug is arranged inside the inner container, when the inner container is used as a reactor, the temperature and the pressure inside the inner container are raised due to reaction, so that the pressure is generated on the air pressure plug to enable the air pressure plug to slide downwards, the connecting disc and the fixing bolt rod are driven, and the sealing gland is driven to compress the composite tank body, so that the sealing gland is pressed more and more tightly along with the reaction propulsion in the working process; in addition, through setting up pressure discharge pipe, pressure discharge valve and pressure discharge bolt, utilize check valve structure and piston structure, can exhaust air and utilize the position of atmospheric pressure fixed connection pad when the connection pad pushes down, avoid it to reset in the reaction process or because of inner bag internal pressure fluctuation.

Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of the overall structure of a self-tightening sealing structure of a threaded quick-opening autoclave cover according to the present invention;

FIG. 2 is a schematic structural view of section A-A of FIG. 1;

FIG. 3 is a partial view of portion D of FIG. 2;

FIG. 4 is a schematic structural view of section B-B of FIG. 1;

FIG. 5 is a partial display view of portion E of FIG. 4;

FIG. 6 is a schematic structural view of section C-C of FIG. 1;

fig. 7 is a partial view of portion F of fig. 6.

In the drawings, the components represented by the respective reference numerals are listed below:

1. compounding the tank body; 2. a sealing gland; 3. a fixed bolt rod; 101. a jacket; 102. an inner container; 1021. a pneumatic tube; 1022. a gas pressure plug; 1023. a connecting disc; 1011. a sleeve; 1012. a limiting chute; 301. a pressure nut; 103. an installation table; 106. sealing the rubber gasket; 201. a piezometric tube; 202. a pressure gauge; 104. a pressure discharge pipe; 1024. pressure plug removal; 1041. a pressure relief valve; 1042. a pressure discharge cap; 105. a spring; 1025. and (4) feeding a pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "middle", "outer", "inner", and the like, indicate orientations or positional relationships, are used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referenced components or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Example (b):

referring to fig. 1-7, the self-tightening sealing structure of the threaded quick-opening autoclave cover of the present invention comprises a composite tank 1, a sealing gland 2 and a fixing bolt 3, wherein the composite tank 1 comprises a jacket 101 and a liner 102, the jacket 101 is sleeved with the liner 102 and fixed by welding, and the sealing gland 2 is sleeved with the jacket 101; the liner 102 is a high-pressure reaction field, i.e. an internal reactor of the autoclave; the outer sleeve 101 and the sealing gland 2 are fixedly inserted through a plurality of fixing bolt rods 3, and the inner container 102 is arranged among the fixing bolt rods 3;

the inner bottom surface of the inner container 102 is welded and communicated with a pneumatic tube 1021, the inner part of the inner container 102 is communicated with the inner part of the jacket 101 through the pneumatic tube 1021, a pneumatic plug 1022 is arranged in the pneumatic tube 1021, and when the pressure in the inner container 102 rises due to the propulsion in the reaction process, the pneumatic plug 1022 can be pushed to slide downwards; the lower end face of the air pressure plug 1022 is welded with a connecting disc 1023, the connecting disc 1023 is positioned below the pipe orifice of the air pressure pipe 1021, and the air pressure plug 1022 cannot be separated from the outside of the air pressure pipe 1021; the upper surface of the connecting disc 1023 is bolted and fixed with a plurality of fixing tie rods 3, and the connecting disc 1023 and the fixing tie rods 3 are sequentially driven to slide when the air pressure plug 1022 slides; the inner surface of the outer sleeve 101 is welded and communicated with a plurality of sleeves 1011, and the sleeves 1011 are nested and matched with the fixed bolt rods 3.

Preferably, the fixing peg 3 is a sliding fit with the sleeve 1011; the inner surface of the sleeve 1011 is provided with a plurality of limiting sliding grooves 1012, and the peripheral side surface of the fixing bolt rod 3 is clamped with the limiting sliding grooves 1012 by a plurality of protrusions, so that the fixing bolt rod 3 is limited to avoid rotating inside the sleeve 1011.

Preferably, a pressure nut 301 is connected to the circumferential side of the fixing bolt 3 in a threaded manner, and the pressure nut 301 is installed above the sealing gland 2 and contacts with the sealing gland 2, and the pressure nut 301 is matched with the sealing gland 2 for fixedly pressing the autoclave liner 102.

Preferably, the mounting table 103 is welded on the upper surface of the outer sleeve 101, and the sealing gland 2 is in a dish-shaped cover structure and is sleeved with the mounting table 103; a sealing rubber gasket 106 is arranged between the sealing gland 2 and the mounting table 103, so that the sealing structure between the sealing gland 2 and the autoclave is enhanced.

Preferably, the flange on the upper surface of the sealing gland 2 is connected with a pressure measuring pipe 201, and the pressure measuring pipe 201 is communicated with the inside of the liner 102; the upper surface of the pressure measuring pipe 201 is bolted with a pressure gauge 202; a safety valve is arranged in the pressure gauge 202 and is matched with the liner 102; when the internal pressure of the liner 102 is higher than the set pressure value of the pressure gauge 202, the safety valve can be used for air release, so that safety accidents of the autoclave are avoided.

Preferably, a pressure relief pipe 104 is welded on the inner bottom surface of the outer sleeve 101, a pressure relief bolt 1024 is welded on the lower surface of the connecting disc 1023, and the pressure relief bolt 1024 and the pressure relief pipe 104 form a piston structure; one end of the pressure discharge pipe 104 extends to the outside of the jacket 101, a pressure discharge valve 1041 is arranged inside the pressure discharge pipe 104, the pressure discharge valve 1041 is of a one-way valve structure, and a pressure discharge cap 1042 is welded on one end face of the pressure discharge valve 1041; the pneumatic plug 1022 and the pneumatic tube 1021 form a piston structure; the pressure discharge cap 1042 is arranged outside the pressure discharge pipe 104; pressure pipe 104 and the pressure of row of piston structure are tied 1024 and are mutually supported with the pressure relief valve 1041 of check valve structure, can discharge the air in pressure pipe 104 when connection pad 1023 pressurized descends, utilize atmospheric pressure effect to prevent that connection pad 1023 from reseing, are convenient for keep gland 2's the state that compresses tightly.

Preferably, a spring 105 is welded between the connecting disc 1023 and the inner bottom surface of the outer sleeve 101, so that the connecting disc 1023 and the fixing bolt rod 3 can be quickly reset in standby; the peripheral side surface of the neck of the inner container 102 is welded and communicated with a plurality of feeding pipes 1025.

The working mode and principle are as follows:

because the self-tightening sealing structure of the high-pressure kettle cover comprises a partial structure of the high-pressure kettle, the fixing operation is carried out according to the working flow of the high-pressure kettle in actual use; when the sealing gland 2 is installed, bolt holes on the surface of the sealing gland are inserted into the corresponding fixed bolt rods 3, and then the sealing gland 2 is pressed and fixed by a diagonal screwing method; then introducing materials, setting a safe pressure value, and starting the high-pressure kettle to perform high-pressure reaction;

in the working process, the temperature and the pressure inside the liner 102 rise and rise due to reaction, downward pressure is applied to the air pressure plug 1022, at the moment, the air pressure plug 1022 drives the connecting disc 1023 and the fixing bolt rod 3 to slide, the fixing bolt rod 3 is bolted and fixed by the pressure nut 301 and cannot slide per se, but the fixing bolt rod can drive the sealing gland 2 to continuously compress the composite tank body 1, so that the structure between the sealing gland 2 and the composite tank body 1 is gradually compressed in the pressure rise process; meanwhile, when the connecting disc 1023 is pressed down, air in the pressure discharge pipe 104 is discharged by the pressure discharge bolt 1024 and is matched with the pressure discharge valve 1041 of the one-way valve structure, so that the connecting disc 1023 can be prevented from being reset due to the propulsion of the reaction process in the inner container 102;

when the pressure inside the liner 102 rises to a set pressure value, the safety valve is opened, after the work is completed, the pressure relief valve 1041 is manually opened, the pressure nut 301 is loosened, and the sealing gland 2 is detached.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a screw thread formula is opened autoclave lid from tight seal structure soon, includes the compound jar body (1), gland (2) and fixing bolt pole (3), its characterized in that: the composite tank body (1) comprises an outer sleeve (101) and an inner container (102), the outer sleeve (101) is sleeved with the inner container (102) and is fixed by welding, and the sealing gland (2) is sleeved with the outer sleeve (101); the outer sleeve (101) and the sealing gland (2) are fixedly inserted through a plurality of fixing tie rods (3), and the inner container (102) is arranged among the fixing tie rods (3);

the inner bottom surface of the inner container (102) is welded and communicated with a pneumatic tube (1021), the inner part of the inner container (102) is communicated with the inner part of the jacket (101) through the pneumatic tube (1021), and a pneumatic plug (1022) is arranged in the pneumatic tube (1021); the pneumatic plug (1022) and the pneumatic tube (1021) form a piston structure; the lower end face of the air pressure plug (1022) is welded with a connecting disc (1023), and the connecting disc (1023) is positioned below the pipe orifice of the air pressure pipe (1021); the upper surface of the connecting disc (1023) is bolted and fixed with a plurality of fixing bolt rods (3); the inner surface of the outer sleeve (101) is welded and communicated with a plurality of sleeves (1011), and the sleeves (1011) are nested and matched with the fixed bolt rods (3);

a pressure relief pipe (104) is welded on the inner bottom surface of the outer sleeve (101), a pressure relief bolt (1024) is welded on the lower surface of the connecting disc (1023), and the pressure relief bolt (1024) and the pressure relief pipe (104) form a piston structure;

one end of the pressure discharge pipe (104) extends to the outside of the jacket (101), a pressure discharge valve (1041) is arranged inside the pressure discharge pipe (104), the pressure discharge valve (1041) is of a one-way valve structure, and a pressure discharge cap (1042) is welded to one end face of the pressure discharge valve (1041); the pressure discharge cap (1042) is arranged outside the pressure discharge pipe (104).

2. A threaded quick-opening autoclave lid self-tightening sealing structure according to claim 1, characterized in that the fixing bolt (3) is in sliding fit with the sleeve (1011); a plurality of limiting sliding grooves (1012) are formed in the inner surface of the sleeve (1011), and the peripheral side face of the fixed bolt rod (3) is clamped with the limiting sliding grooves (1012) through a plurality of protrusions.

3. The threaded quick-opening autoclave lid self-tightening structure according to claim 2, wherein the circumferential side of the fixing bolt rod (3) is connected with a pressure nut (301) by screw thread, and the pressure nut (301) is installed above the gland (2) and contacts with the gland (2).

4. The threaded quick-opening autoclave cover self-tightening sealing structure according to claim 3, characterized in that an installation platform (103) is welded on the upper surface of the outer sleeve (101), and the sealing gland (2) is of a dish-shaped cover structure and is sleeved with the installation platform (103); and a sealing rubber gasket (106) is arranged between the sealing gland (2) and the mounting table (103).

5. The threaded self-tightening sealing structure of the quick-opening autoclave cover according to claim 4, characterized in that the upper surface of the sealing gland (2) is flanged with a pressure measuring pipe (201), and the pressure measuring pipe (201) is communicated with the inside of the inner container (102); the upper surface of the pressure measuring pipe (201) is bolted with a pressure gauge (202).

6. The threaded quick-opening autoclave cover self-tightening structure according to claim 5, wherein a spring (105) is welded between the connecting plate (1023) and the inner bottom surface of the outer sleeve (101); the peripheral side surface of the neck part of the inner container (102) is welded and communicated with a plurality of feeding pipes (1025).

7. The threaded quick-opening autoclave lid self-tightening structure according to claim 6, wherein the pressure gauge (202) is internally provided with a safety valve, and the safety valve is matched with the inner container (102).