CN202558922U

CN202558922U - Carbide furnace labyrinth type gas seal

Info

Publication number: CN202558922U
Application number: CN2012201804069U
Authority: CN
Inventors: 周昌厚
Original assignee: HARBIN HEILONG WEIYE CARBON FIBER EQUIPMENT CO Ltd
Current assignee: HARBIN HEILONG WEIYE CARBON FIBER EQUIPMENT CO Ltd
Priority date: 2012-04-25
Filing date: 2012-04-25
Publication date: 2012-11-28
Anticipated expiration: 2022-04-25

Abstract

The utility model relates to a carbide furnace labyrinth type gas seal, and relates to a gas seal used for carbide furnaces. The carbide furnace labyrinth type gas seal is used for solving the problems that the import and export sealing effect of the existing carbide furnace is not good, thus the nitrogen gas in the carbide furnace overflows from the import and export, and the working environment is contaminated. The carbide furnace labyrinth type gas seal is characterized in that an upper flange cover is connected with an upper cover connecting flange, and a lower flange cover is connected with a lower cover connecting flange; an upper cover end plate is arranged in the lower end of an upper gas-collecting chamber, and a lower cover end plate is arranged in the upper end of a lower gas-collecting chamber; a lower air intake and an upper air intake are arranged up and down in a staggered mode, an upper partition plate is arranged on each of both sides of each upper air intake in the lower end of the upper flange cover, and a lower partition plate is arranged on each of both sides of each lower air intake in the upper end of the lower flange cover; arc transition is adopted between the two side walls of the upper end of each upper partition plate and the upper cover end plate, and between the two side walls of the lower end of each lower partition plate and the lower cover end plate; an upper flange connecting pipe is connected with the upper flange cover, and a lower flange connecting pipe is connected with the lower flange cover. The carbide furnace labyrinth type gas seal provided by the utility model is used for carbide furnaces.

Description

The carbide furnace labyrinth air seal

Technical field

The utility model relates to a kind of sealing gland that is used on the carbide furnace.

Background technology

The carbide furnace of non-stop run is imported and exported and is uncovered structure, and need keep the certain pressure of nitrogen protection atmosphere in stove, with the not oxidation of protection carbon filament.Existing carbide furnace is imported and exported sealing and is adopted two-layer gas curtain sealing, and this sealing means sealing effectiveness is bad, causes the nitrogen in the stove to overflow from import and export, and Working environment is polluted.

The utility model content

The purpose of the utility model is to import and export the two-layer gas curtain sealing of sealing employing for solving existing carbide furnace; This sealing means sealing effectiveness is bad; Cause the nitrogen in the stove to overflow, make Working environment suffer pollution problems, a kind of carbide furnace labyrinth air seal is provided from import and export.

The utility model comprises labyrinth housing, upper flange capping, lower flange capping, upper cover end plate, following capping end plate, upper flange adapter, lower flange adapter, several upper spacers and several lower clapboards; The upper end of said labyrinth housing is provided with the upper cover joint flange, the lower end of said labyrinth housing be provided with the upper cover joint flange over against following capping joint flange, vertical end of said labyrinth housing is the burner hearth interface; Vertical the other end of said labyrinth housing is the carbon filament outlet; Said upper flange capping is connected with the upper cover joint flange, and said lower flange capping is connected with following capping joint flange, and the inner chamber of upper flange capping is last collection chamber; The upper cover end plate is arranged on the lower end of collection chamber; The inner chamber of lower flange capping 3 is following collection chamber, and following capping end plate is arranged on down the upper end of collection chamber, and the upper cover end plate longitudinally is provided with air inlet port on several; Following capping end plate longitudinally is provided with several air inlet ports down; And the setting of staggering up and down of following air inlet port and last air inlet port, the both sides that the lower end of upper cover end plate is positioned at air inlet port on each all are provided with a upper spacer, and the upper end of following capping end plate is positioned at each and a lower clapboard all is set the both sides of air inlet port down; Arc transition between the two side, upper end of each upper spacer and the upper cover end plate; Arc transition between the two side, lower end of each lower clapboard and the following capping end plate, upper flange are taken over and are connected with the upper flange capping, and lower flange is taken over and is connected with the lower flange capping.

The utility model has the advantages that: one, several upper spacers of the utility model and several lower clapboard subtends are crisscross arranged and constitute labyrinth type multilayer gas curtain structure; Fire door place at carbide furnace has formed higher vapour lock; Stoped extraneous air to invade the protective atmosphere in the stove internal contamination stove effectively, prevented that also furnace gas from overflowing stove and polluting Working environment outward simultaneously.

Description of drawings

Fig. 1 is that the one-piece construction master of the utility model cuts open figure, and Fig. 2 is that the structure master of labyrinth housing 1 cuts open figure.

Embodiment

Embodiment one: combine Fig. 1 and Fig. 2 that this embodiment is described; This embodiment comprises labyrinth housing 1, upper flange capping 2, lower flange capping 3, upper cover end plate 4, following capping end plate 5, upper flange adapter 8, lower flange adapter 9, several upper spacers 6 and several lower clapboards 7; The upper end of said labyrinth housing 1 is provided with upper cover joint flange 1-1, the lower end of said labyrinth housing 1 be provided with upper cover joint flange 1-1 over against following capping joint flange 1-2, vertical end of said labyrinth housing 1 is burner hearth interface 1-3; Vertical the other end of said labyrinth housing 1 is carbon filament outlet 1-4; Said upper flange capping 2 is connected with upper cover joint flange 1-1 through connect elements, and said lower flange capping 3 is connected with following capping joint flange 1-2 through connect elements, and the inner chamber of upper flange capping 2 is last collection chamber 2-1; Upper cover end plate 4 is arranged on the lower end of collection chamber 2-1; The inner chamber of lower flange capping 3 is following collection chamber 3-1, and following capping end plate 5 is arranged on down the upper end of collection chamber 3-1, and upper cover end plate 4 longitudinally is provided with air inlet port 4-1 on several; Following capping end plate 5 longitudinally is provided with several air inlet port 5-1 down; And following air inlet port 5-1 and the last air inlet port 4-1 setting of staggering up and down, the both sides that the lower end of upper cover end plate 4 is positioned at air inlet port 4-1 on each all are provided with a upper spacer 6, and the upper end of following capping end plate 5 is positioned at each and a lower clapboard 7 all is set the both sides of air inlet port 5-1 down; Arc transition between the two side, upper end of each upper spacer 6 and the upper cover end plate 4; Arc transition between the two side, lower end of each lower clapboard 7 and the following capping end plate 5, arc transition make the bottom surface between adjacent two dividing plates form at the bottom of the U-shaped, the middle part, return-air envelope chamber so that nitrogen can all rebound when charging into the dividing plate bottom; Upper flange is taken over 8 and is connected with upper flange capping 2, and lower flange adapter 9 is connected with lower flange capping 3.Upper flange capping 2, lower flange capping 3 are detachable the connection with labyrinth housing 1, are convenient to clear up sedimentary tar in the sealing gland.Several upper spacers 6 are crisscross arranged with several lower clapboard 7 subtends and constitute labyrinth type multilayer gas curtain structure.

Embodiment two: combine Fig. 1 that this embodiment is described, the width of the upper spacer 6 of this embodiment is narrowed down by upper end to lower end gradually, and the width of lower clapboard 7 is narrowed down by lower end to upper end gradually.Design is to reduce the resistance of gas ejection like this.Other composition and annexation are identical with embodiment one.

Embodiment three: combine Fig. 1 that this embodiment is described; This embodiment is different with embodiment one or two is that it also increases by two heat resistant joint rings 10 are arranged; The upper surface of said upper cover joint flange 1-1 is provided with sealing groove 1-1-1; The said lower surface of capping joint flange 1-2 down is provided with lower seal groove cavity 1-2-1, and two heat resistant joint rings 10 are contained in respectively among sealing groove 1-1-1 and the lower seal groove cavity 1-2-1.Heat resistant joint ring 10 can prevent the nitrogen leakage.Other composition and annexation are identical with embodiment one or two.

The method of use of the utility model: see Fig. 1; During use, this embodiment is installed in the fire door place of carbide furnace 11 through fire door mounting flange 18, the fire door of burner hearth interface 1-3 and carbide furnace 11 over against; Upper flange adapter 8 is taken over 9 with lower flange and is connected with source nitrogen 13 through pipeline 12 respectively; Under meter 14 and variable valve 15 are installed on the pipeline 12, and variable valve 15 gets into the air input that goes up collection chamber 2-1 and following collection chamber 3-1 in order to regulate, and minute-pressure appearance 17 is installed on the labyrinth housing 1.

The principle of work of the utility model: nitrogen one tunnel is taken over 8 through variable valve 15, under meter 14, upper flange and is got into upward collection chamber 2-1, is got in the collection chamber 16 by last air inlet port 4-1 again; Another road of nitrogen is taken over 9 through variable valve 15, under meter 14, lower flange and is got into collection chamber 3-1 down; Get in the collection chamber 16 by following air inlet port 5-1 again; The air-flow of last air inlet port 4-1 ejection forms gaseous exchange at upper spacer 6 and 7 of lower clapboards; The air-flow of following air inlet port 5-1 ejection forms gaseous exchange at lower clapboard 7 and 6 of upper spacers, and each gaseous exchange is gas shield one, and the multi-layer gas barrier has stopped the intrusion of extraneous air and overflowing of burner hearth nitrogen effectively.

Claims

1. carbide furnace labyrinth air seal; It is characterized in that: said carbide furnace labyrinth air seal comprises labyrinth housing (1), upper flange capping (2), lower flange capping (3), upper cover end plate (4), capping end plate (5), upper flange are taken over (8) down, lower flange is taken over (9), several upper spacers (6) and several lower clapboards (7); The upper end of said labyrinth housing (1) is provided with upper cover joint flange (1-1); The lower end of said labyrinth housing (1) be provided with upper cover joint flange (1-1) over against following capping joint flange (1-2); Vertical end of said labyrinth housing (1) is burner hearth interface (1-3), and vertical the other end of said labyrinth housing (1) is carbon filament outlet (1-4), and said upper flange capping (2) is connected with upper cover joint flange (1-1); Said lower flange capping (3) is connected with following capping joint flange (1-2); The inner chamber of upper flange capping (2) is last collection chamber (2-1), and upper cover end plate (4) is arranged on the lower end of collection chamber (2-1), and the inner chamber of lower flange capping (3) is following collection chamber (3-1); Following capping end plate (5) is arranged on down the upper end of collection chamber (3-1); Upper cover end plate (4) longitudinally is provided with air inlet port on several (4-1), and following capping end plate (5) longitudinally is provided with several down air inlet ports (5-1), and air inlet port (5-1) and last air inlet port (4-1) setting of staggering up and down down; The both sides that the lower end of upper cover end plate (4) is positioned at air inlet port on each (4-1) all are provided with a upper spacer (6); The upper end of following capping end plate (5) is positioned at each and a lower clapboard (7) all is set, arc transition between two side, upper end of each upper spacer (6) and the upper cover end plate (4), arc transition between two side, lower end of each lower clapboard (7) and the following capping end plate (5) in the both sides of air inlet port (5-1) down; Upper flange is taken over (8) and is connected with upper flange capping (2), and lower flange is taken over (9) and is connected with lower flange capping (3).

2. according to the said carbide furnace labyrinth air seal of claim 1, it is characterized in that: the width of said upper spacer (6) is narrowed down by upper end to lower end gradually, and the width of said lower clapboard (7) is narrowed down by lower end to upper end gradually.

3. according to claim 1 or 2 said carbide furnace labyrinth air seals; It is characterized in that: said carbide furnace labyrinth air seal also comprises two heat resistant joint rings (10); The upper surface of said upper cover joint flange (1-1) is provided with sealing groove (1-1-1); The said lower surface of capping joint flange (1-2) down is provided with lower seal groove cavity (1-2-1), and two heat resistant joint rings (10) are contained in respectively in sealing groove (1-1-1) and the lower seal groove cavity (1-2-1).