Abstract
Coke oven door sealing unit for sealing a coke oven door against a sealing surface of a coke oven door frame of a coke oven chamber, the coke oven door sealing unit including: a coke oven door for fitting into the coke oven door frame of the coke oven chamber; a fixture device for holding a sealing piece opposite to the coke oven door frame in a peripheral area of the coke oven door; the sealing piece, where the sealing piece is configured to be operated in a first operating state or a second operating state; a seal protection element for isolating the sealing piece from the coke oven chamber; where, in a first operating state, the sealing piece is spaced at a first distance from a sealing surface arranged opposite of the sealing piece; and where, in a second operating state, the sealing piece contacts the sealing surface; such that in the second operating state, the sealing piece and the seal protection element at least partially form a cavity.
Claims
1. Coke oven door sealing unit for sealing a coke oven door against a sealing surface of a coke oven door frame of a coke oven chamber, the coke oven door sealing unit comprising: a coke oven door for fitting into the coke oven door frame of the coke oven chamber; a fixture device for holding a sealing piece opposite to the coke oven door frame in a peripheral area of the coke oven door, wherein the sealing piece is configured to be operated in a first operating state or a second operating state; and a seal protection element for isolating the sealing piece from the coke oven chamber; wherein, in the first operating state, the sealing piece is spaced at a first distance from a sealing surface arranged opposite of the sealing piece; and wherein, in the second operating state, the sealing piece contacts the sealing surface, such that in the second operating state, the sealing piece and the seal protection element at least partially form a cavity; and wherein the coke oven door sealing unit further comprises a first insulation element for thermally insulating the sealing piece, wherein the first insulation element is arranged between the fixture device and the seal protection element.
2. The coke oven door sealing unit according to claim 1, wherein the sealing piece comprises a hollow body for retaining a medium; and/or wherein the sealing piece comprises a glass-fiber packing and an integrated flexible core element enclosed by the glass-fiber packing.
3. The coke oven door sealing unit according to any one of claim 1, wherein the sealing piece is formed of an elastic material.
4. The coke oven door sealing unit according to claim 1, wherein the sealing piece presents a ring-shaped structure to the sealing surface.
5. The coke oven door sealing unit according to claim 1, wherein the sealing surface is arranged on the coke oven door frame.
6. The coke oven door sealing unit according to claim 1, further comprising a collar member extending from the coke oven door frame, wherein the sealing surface is arranged on at least a portion of the collar member.
7. The coke oven door sealing unit according to claim 6, wherein the collar member is integral with the coke oven door frame.
8. The coke oven door sealing unit according to claim 6, wherein the collar member has a rectangular-shaped, L-shaped, I-shaped, concave, convex, angled, curved or C-shaped profile.
9. The coke oven door sealing unit according to claim 6, further comprising a second insulation element for thermally insulating the sealing piece, wherein the second insulation element contacts at least a portion of the collar member and a portion of the coke oven door frame.
10. The coke oven door sealing unit according to claim 1, wherein the fixture device comprises a groove for holding the sealing piece, wherein the sealing piece is frictionally and/or form-fit connected to the groove.
11. The coke oven door sealing unit according claim 10, wherein, in the first operating state, a depth of the groove is greater than the depth of the sealing piece.
12. The coke oven door sealing unit according claim 10, wherein, in the first operating state, the depth of the groove is smaller than or identical to the depth of the sealing piece.
13. Coke oven chamber comprising a coke oven door sealing unit according to claim 1.
14. Coke oven battery comprising a coke oven door sealing unit according to claim 1.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0047] Embodiments of the disclosure are now described by way of example and with reference to the attached drawings, wherein
[0048] FIG. 1: is a top view of an embodiment of a coke oven door sealing unit;
[0049] FIG. 2: is an enlarged vertical sectional view of the edging area of the coke oven door shown in FIG. 1;
[0050] FIG. 3: is a sectional view of an alternative embodiment of the coke door sealing unit with a collar having a curved portion;
[0051] FIG. 4: is a sectional view of an alternative embodiment of the coke oven door sealing unit, wherein the sealing piece is a high-temperature glass-fiber sealing with an integrated flexible core;
[0052] FIG. 5: is a sectional view of an alternative embodiment of the coke oven door sealing unit, wherein the sealing piece is a high-temperature glass-fiber sealing without an integrated flexible core;
[0053] FIG. 6: is a sectional view of an alternative embodiment of the coke oven door sealing unit having a sealing piece comprising an inflatable seal, wherein the sealing surface is directly arranged on the coke oven door frame;
[0054] FIG. 7: is a sectional view of an alternative embodiment of the coke oven door sealing unit 1 comprising a sealing piece, wherein the seal protection element is fixed between the first insulation element and a peripheral section of the coke oven door;
[0055] FIG. 8: is a sectional view of an alternative embodiment of the coke oven door sealing unit comprising a sealing piece, wherein the seal protection element is fixed on an inner side of the coke oven door facing the coke oven chamber.
DETAILED DESCRIPTION
[0056] FIG. 1 shows a top view of a coke oven door sealing unit 1, the frame is not shown. FIG. 2 is an enlarged vertical sectional view of the edging area of the coke oven door sealing unit 1 shown in FIG. 1. In FIG. 2, the coke oven door 1 is in a closed state. The coke oven door sealing unit 1 comprises a coke oven door 10 for fitting into or on a coke oven door frame 20 of a coke oven chamber 31 of a coke oven battery (not shown). The coke oven door 10 is configured for sealing against a sealing surface 21 in order to prevent coke oven gases from escaping the coke oven chamber. A fixture device 11 having a groove 12 is arranged at a peripheral area of the coke oven door 10. The sealing surface 21 is arranged opposite and at a distance from groove 12. A sealing piece 13 comprising an inflatable seal is mounted within the groove 12. The groove 12 and the sealing piece 13 form a frictionally and/or form-fit connection. The sealing piece 13 has a hollow body for retaining a medium (not shown), e.g. pressurized gas. The sealing piece 13 is made of an elastic material, for example silicone, which is configured for being operated at approximately 300° Celsius. The sealing piece 13 has a ring-like structure that surrounds completely a peripheral area of the coke oven door 10.
[0057] The hatched surface of sealing piece 13 in FIG. 2 shows the inflatable seal in a first operating state. In the first operating state, the sealing piece 13 is spaced at a distance D from the contact surface 21 arranged opposite of the sealing piece 13. The dash-dotted depiction of sealing piece 13 in FIG. 2 shows the inflatable seal in its a second operating state, wherein the sealing piece 13 contacts the contact surface 21. In the first operating state, a depth G of the groove 12 is greater than the depth S of the sealing piece 13.
[0058] In the embodiment shown in FIG. 2, the coke oven door frame 20 is provided with a collar member 22. The collar member 22 extends from the coke oven door frame 20, wherein the sealing surface 21 is arranged on a lateral portion of the collar member 22. The collar member 22 may be attached to or integral part of the coke oven door frame 20. The collar member 22 has a L-shaped profile. The fixture device 11 holds the sealing piece 13 opposite to the coke oven door frame 20, respectively the sealing surface 21 of the collar member 22 of the coke oven door frame 20.
[0059] In the second operating state of the sealing piece 13, a cavity 32 is formed between a portion of the sealing piece 13 and the seal protection element 30. The seal protection element 30 in FIG. 2 presents as an angled spring shield being attached on the door 10. It must be noted that smaller shield is also possible. An end portion of the seal protection element 30 contacts the coke oven door frame 20 when the coke oven door is in a closed state. The cavity 32 is further defined by a portion of the coke oven door frame 20, a portion of the fixture device 11, a portion of the collar member 22, a portion of a first insulation element 14 and a portion of a second insulation element 23. During the transition of the sealing piece 13 from the first operating state to the second operating state, the sealing piece 13 forms a closure of cavity 32.
[0060] The first insulation element 14 is arranged on the coke oven door 1 between a portion of the fixture device 11 and the seal protection element 30. The second insulation element 23 is arranged between a portion of the coke oven door frame 20 and a portion of the collar member 22. Both, the first insulation element 14 and the second insulation element 23, may comprise or be formed out of a mica or a similar material. The first insulation element 14 and the second insulation element 23 present a thermal isolation/insulation against the heat of the coke oven door frame 20 and the coke oven chamber 31. The first insulation element 14 and the second insulation element 23 thereby contribute to the thermal isolation and/or insulation of the sealing piece 13.
[0061] FIG. 3 shows a sectional view of an alternative embodiment of the coke door sealing unit 1 that has, in contrast to the embodiment shown in FIG. 2, a collar 22 having a curved portion 24 and a sloping end portion 26. The curve apex 25 of the curved section 24 of collar member 22 is directed towards cavity 32. The sealing piece 13, which comprises an inflatable seal, has a trapezoidal profile adapted to the form of a sloping end portion 26 of the collar member 22. The collar member 22 having a curved portion and a sloping end portion may be cleaned more efficiently by the operators. The cleaning of the inclined surface may be carried out particularly fast and with less effort.
[0062] FIG. 4 is a sectional view of an alternative embodiment of the coke oven door sealing unit 1, wherein the sealing piece 13 is a high-temperature glass-fiber sealing with an integrated flexible core 15. In contrast to FIG. 4, FIG. 5 is a sectional view of an alternative embodiment of the coke oven door sealing unit 1, wherein the sealing piece 13 is a high-temperature glass-fiber sealing without an integrated flexible core 15. The sealing pieces 13 shown in FIG. 4 and FIG. 5 may each be configured to expand when heat, respectively thermal energy, is applied to the sealing piece 13. Each of the sealing pieces 13 shown in FIGS. 4 and 5 may additionally or alternatively comprise or be formed as inflatable seal (not shown).
[0063] In contrast to the embodiments shown in FIG. 1 and FIG. 2, the embodiments of FIG. 4 and FIG. 5 each show the coke oven door 10 in a closed state having a sealing piece 13 in its first operating state contacting a mounting surface 27 of the collar member 22. “Mounting surface” refers to a surface or surface portion of the collar member 22 which contacts a surface of the sealing piece 13 when the coke oven door 1 is in a closed state and the sealing piece is in its first operating state. In the embodiments shown by FIG. 4 and FIG. 5, a closed cavity 32 is already formed after the coke oven door 1 is in a closed state. In other words, the embodiments shown in FIG. 4 and FIG. 5 both form the cavity 32 as soon as the coke oven door is closed. During coking, the seal piece 13 expands further against the sealing surface 21 and thereby further delimits the cavity 32.
[0064] In FIG. 4 and in FIG. 5, the fixture device 11 for holding the sealing piece 13 is arranged opposite to the coke oven door frame 20 and the contacting surface 21 in a peripheral area of the coke oven door 10. In the first operating state, the sealing piece 13 is spaced at a first distance D from the sealing surface 21 arranged opposite of the sealing piece 13. In the second operating state, the sealing piece 13 contacts the sealing surface 21. In the first operating state, the depth G of the groove 12 is smaller than the depth S of the sealing piece 13.
[0065] FIG. 6 is a sectional view of an alternative embodiment of the coke oven door sealing unit 1 having a sealing piece 13 comprising an inflatable seal, wherein the sealing surface 21 is directly arranged on the coke oven door frame 20. The sealing piece 13 comprises a hollow body for retaining a medium. The embodiment shown in FIG. 6 does neither require a first or second thermal insulation elements nor a collar member. The seal protection element 30 insulates/isolates the sealing piece 13 from the coke oven chamber 31. In the first operating state, the sealing piece 13 is spaced at a first distance D from a sealing surface 21. Also in the first operating state, the depth G of the groove 12 is greater than the depth S of the sealing piece 13. In other words, the sealing piece is slipped/retracted inside the groove 12 in the first operating state. In the second operating state (not shown), the sealing piece 13 contacts the sealing surface 21, such that in the second operating state, the sealing piece 13 and the seal protection element 30 at least partially form the cavity 32.
[0066] FIG. 7 is a sectional view of an alternative embodiment of the coke oven door sealing unit 1 comprising a sealing piece 13, wherein the seal protection element 30 is fixed between the first insulation element 14 and a peripheral section of the coke oven door 10. The sealing piece 13 is formed as an inflatable seal. The collar member 22 of the coke oven door frame 20 is arranged to partially delimit the coke oven chamber 31. The seal protection element 30 contacts an upper edge of collar member 22 when the coke oven door 10 is closed. The first insulation element 14 is arranged on the fixture device 11, wherein the fixture device 11 comprises two interlocking parts which together form sections of the groove 12. The seal protection element 30 insulates/isolates the sealing piece 13 and the first insulation element 14 from the coke oven chamber 31. The sealing surface 21 is arranged on the outward side of the collar member 22.
[0067] FIG. 8 is a sectional view of an alternative embodiment of the coke oven door sealing unit 1 comprising a sealing piece 13, wherein the seal protection element 30 is fixed on an inner side of the coke oven door facing the coke oven chamber 31. The sealing piece 13 is formed as an inflatable seal. Similarly to FIG. 7, the embodiment illustrated by FIG. 8 comprises a collar member 22 that partially delimits the coke oven chamber 31. The seal protection element 30 contacts the upper edge of collar member 22 when the coke oven door 10 is closed. The first insulation element 14 is arranged between the fixture device 11 and the peripheral section of the coke oven door 10. The sealing surface 21 is arranged on the outward side of the collar member 22.
[0068] The discussed examples are embodiments of the disclosure. In the case of the embodiments, the described components of the respective embodiment each represent individual features of the disclosure which are to be considered independently of each other and which also further develop the disclosure independently of each other. The features are thus also to be regarded as components of the disclosure individually or in a combination other than the combination shown. Furthermore, the described embodiments can also be supplemented by further features of the disclosure already described.
[0069] Further features and embodiments of the disclosure result for the skilled person in the context of the present disclosure and the claims.
