CN211009902U - High-temperature flue gas stop valve - Google Patents
High-temperature flue gas stop valve Download PDFInfo
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- CN211009902U CN211009902U CN201822047871.5U CN201822047871U CN211009902U CN 211009902 U CN211009902 U CN 211009902U CN 201822047871 U CN201822047871 U CN 201822047871U CN 211009902 U CN211009902 U CN 211009902U
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Abstract
The utility model provides a high temperature flue gas stop valve, includes the valve body, the valve body includes inner chamber, valve clack, valve rod and disk seat, its characterized in that: the inner cavity and the valve seat are integrated, the inner cavity and the valve seat are made of non-metal refractory materials, a steel sheath wraps the inner cavity, and refractory fiber cotton is filled between the inner cavity and the steel sheath; the valve rod is connected with the valve clack, the valve rod is made of a refractory ceramic tube, a refractory steel rod is arranged on the outer side of the valve body on the upper portion of the center of the refractory ceramic tube, and refractory cement is filled in a gap between the refractory steel rod and the refractory ceramic tube and between the refractory steel rod and the valve clack. The utility model discloses the stop valve can work for a long time under 800 ~ 1000 ℃ environment, and the action of opening and shutting once in 30 ~ 120s satisfies frequent work requirement, uses good reliability and low in cost.
Description
Technical Field
The utility model belongs to the technical field of high temperature flue gas stop valve, in particular to high temperature flue gas stop valve.
Background
In the using process of a heat treatment kiln, in order to improve the energy utilization rate and reduce harmful elements discharged by flue gas, a high-temperature flue gas stop valve is needed, the valve works at 800-1000 ℃ for a long time, and is closed once within 30-120 s. Because this valve is in high temperature environment for a long time and the action is frequent, the high temperature stop valve that can purchase on the market often breaks down through using, and its main problem that exists is that the high temperature live time is not long just the trouble frequently appears, and the main performance is: the valve clack is not tightly sealed, the valve rod is deformed by heating, a valve power system fails, and great loss is caused to production. The reason for this is that the reliability of the valve is poor, any part of the valve will cause the breakdown of the valve body system due to high temperature, for example, the valve stem will be deformed by heating to cause the valve clack not to be sealed tightly, the load of the transmission power system is increased, the heat conduction will make the sealing element fail and finally the system will not work normally.
Disclosure of Invention
The utility model discloses to the problem that traditional high temperature stop valve appears in the use and provide a neotype high temperature flue gas stop valve.
In order to achieve the purpose, the utility model is realized by adopting the following technical scheme:
a high-temperature flue gas stop valve comprises a valve body, wherein the valve body comprises an inner cavity, a valve clack, a valve rod and a valve seat, the inner cavity and the valve seat are integrated, the inner cavity and the valve seat are made of non-metal refractory materials, a steel sheath wraps the inner cavity, and refractory fiber cotton is filled between the inner cavity and the steel sheath; the valve rod is connected with the valve clack, the valve rod is made of a refractory ceramic tube, a refractory steel rod is arranged outside the valve body on the upper portion of the center of the refractory ceramic tube, and the refractory steel rod, the refractory ceramic tube and the valve clack are cast into a whole through refractory cement.
Preferably, the top of the refractory steel bar is provided with a heat conduction blocking device, a transmission device is arranged above the heat conduction blocking device, and the transmission device is controlled by a display P L C controller.
Preferably, the transmission device is an expansion link controlled by an air cylinder or a torque servo motor, and the display P L C controller controls the expansion and contraction action speed of the expansion link.
Preferably, the valve flap is in the shape of any one of a cylinder, an inverted cone or a sphere.
Preferably, the refractory ceramic tube is sleeved with a flexible refractory ceramic fiber sealing ring, the sealing ring is fixed on the upper part outside the valve body, and a pressing plate for fixing is arranged on the sealing ring.
Preferably, the inner cavity is a non-metal refractory material tee inner cavity, the inner diameter of the steel sheath is larger than the outer diameter of the tee inner cavity by more than 10mm, and the length of the steel sheath is larger than the length of the tee inner cavity by more than 10 mm.
Preferably, the upper part of the valve body is provided with a sealing cover, the upper part of the refractory ceramic pipe penetrates through the sealing cover, and damping steel bars are welded at the part of the refractory steel bar entering and exiting the ceramic pipe.
Preferably, the top of the fire-resistant steel bar is provided with a connecting and positioning plate, the upper part of the connecting and positioning plate is provided with a raised flange, and a heat insulation pad is arranged between the connecting and positioning plate and the raised flange.
A method for manufacturing the high-temperature flue gas stop valve comprises the steps of casting a tee joint and a valve seat into a whole through die casting, casting a valve clack, a valve rod and a fire-resistant steel bar into a whole, or purchasing a commercially available fire-resistant tee joint, a valve seat, a valve clack, a valve rod, a fire-resistant steel bar and an upper cover, trimming the fire-resistant tee joint, the valve clack and the upper cover, trimming an inner hole of the upper cover to match with the outer diameter of a fire-resistant ceramic pipe, machining the fire-resistant metal steel bar into M20 deep 50, welding a damping steel bar to the lower part of the fire-resistant steel bar, drilling the valve clack and the fire-resistant ceramic pipe in a matching manner to facilitate screwing in of a ceramic fire-resistant screw, fixing the fire-resistant ceramic pipe and the valve clack together by using the ceramic fire-resistant screw so that the fire-resistant ceramic pipe is in the center position of the valve clack, placing the valve clack on a horizontal plate, fixing the valve clack, the fire-resistant ceramic pipe and the welded steel bar with the vertical center line coaxial, pouring prepared fire-resistant cement into the ceramic cylinder, filling the fire-resistant cement into the fire-resistant ceramic pipe, welding a heat-resistant tee joint into the fire-resistant three-resistant cylinder, inserting a heat-resistant tee joint into a heat-resistant tee joint control cylinder, inserting a heat-resistant tee joint control cylinder, and a heat-insulating three-resistant three-way control cylinder, and a heat-resistant cylinder, wherein the heat-resistant three-way cylinder are uniformly, the heat-resistant cylinder, the heat-resistant three-resistant cylinder, the heat-resistant three-.
The fire-resistant three-way valve mainly comprises a valve body, a valve clack, a valve rod, a dynamic seal, a transmission, a valve connection and the like, parts directly contacting with high-temperature flue gas are inner walls of the valve body, the valve clack, the valve rod and a dynamic seal, the parts influenced by heat conduction are mainly transmission and valve connection, the transmission part can adopt a multi-heat blocking scheme to solve the heat conduction problem, the valve connection generally does not have problems, all parts directly contacting with the high-temperature flue gas in the valve cavity can work at high temperature of 800-1000 ℃ for a long time, all parts directly contacting with the high-temperature flue gas in the valve are made of refractory materials, the long-term refractory temperature is not lower than 1200 ℃, the metal materials meeting the condition are few and extremely high, only the non-metal refractory materials are considered to be used as a valve body, the valve clack and the valve rod can be replaced by a refractory ceramic heat-resistant ceramic sealing ring, the refractory ceramic bushing is manufactured by purchasing a refractory ceramic bushing, a refractory ceramic bushing, and a refractory ceramic bushing, a refractory ceramic bushing, a refractory three-tube, a refractory three-way valve seat, a refractory ceramic bushing, a refractory three-way valve seat, a refractory ceramic cylinder, a refractory ceramic bushing, a refractory ceramic cylinder, a refractory ceramic bushing, a refractory ceramic cylinder, a refractory ceramic bushing, a refractory three-rod, a refractory three-wire rod, a refractory three-tube, a refractory three-rod, a refractory three-way valve seat, a refractory three-rod, a refractory three-way valve seat, a refractory three-rod, a refractory three-way valve seat.
Compared with the prior art, the utility model discloses an advantage lies in with positive effect:
the utility model discloses the stop valve can work for a long time under 800 ~ 1000 ℃ environment, and the action of opening and closing is once in 30 ~ 120s, satisfies the frequent job requirement of high temperature, uses good reliability and low in cost.
Drawings
Fig. 1 is a front sectional view of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is an enlarged view of section I of FIG. 1;
FIG. 4 is a schematic view of a valve closed condition;
fig. 5-15 are schematic diagrams of the stop valve fabrication process steps.
The figures are numbered: 1 valve seat, 2 fireproof steel sheath, 3 fireproof heat-preservation fiber cotton, 4 nonmetal fireproof tee joint, 5 welding seam, 6 valve clack, 7 ceramic fireproof screw, 8 sealing cover, 9 welding seam, 10 nut, 11 welding flange, 12 ceramic fiber heat insulation pad, 13 pressing plate flange, 14 bracket chassis flange, 15 bolt, 16 internal hexagonal bolt, 17 pressing plate, 18 bolt, 19 flexible fireproof ceramic fiber sealing ring, 20 damping steel bar, 21 fireproof steel bar, 22 bracket, 23 air pipe interface, 24 cylinder, 25 air pipe, 26 bolt, 27 valve rod (fireproof ceramic pipe), 28 fireproof cement, 29 reinforcing rib, 30 nut, 31 heat insulation pad, 32 nut, 33 welding flange, 34 fireproof heat insulation pad, 35 pressing plate flange, 36 connecting pipeline, 37 bolt, 38 welding flange, 39 fireproof heat insulation pad, 40 pressing plate flange, 41 bolt, 42 connecting pipeline, 43 supporting plate, 44 connecting positioning plate, 45 screws, 46 screws, 47 bolts, 48 nuts, 49 heat insulation pads, 50 heat insulation fireproof cloth, 51 heat insulation pads, 52 raised flanges, 53 bolts, 54 heat insulation pads, 55 heat insulation pads, 56 connecting plates, 57 bolts, 58 bolts, 59 cylinder rods, 60 conical hole valve seats, 61 inverted cone valve flaps, 62 spherical crown hole valve seats, 63 spherical valve flaps, 64 torque servo motors and 65 telescopic rod devices.
Detailed Description
In order that the above objects, features and advantages of the present invention may be more clearly understood, the present invention will be further described with reference to specific embodiments. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the present invention is not limited to the limitations of the specific embodiments of the present disclosure.
In the embodiment 1, fig. 1 to 15 are specific embodiments of the present invention, the parts in the cavity of the high temperature flue gas shutoff valve which can be contacted with high temperature flue gas are all non-metal refractory materials and the refractory operating temperature thereof is 1200 ℃, the cavity is composed of a non-metal refractory tee joint 4 (such as ceramic, silica brick and clay brick), a valve seat 1, a sealing cover 8, a valve flap 6 is disposed above the sealing cover 8, the valve flap 6 and a valve stem (refractory ceramic tube) 27 are connected into a whole through a ceramic refractory bolt 7 and refractory cement 28, the upper center position of the valve stem (refractory ceramic tube) 27 is cast with a refractory steel rod 21 through a refractory cement 28, a damping steel bar 20 is welded at the lower part of the refractory steel rod 21 to increase the holding force with the refractory cement 28, the upper part of the valve stem (refractory ceramic tube) 27 can pass through a sealing cover 8, a refractory steel sheath 2 is wrapped around the refractory valve cavity, welding flanges 11, 33, 38 are welded on the refractory steel sheath 2, a thermal insulation flange 11, a nut 32 is reinforced, a thermal insulation flange 14 is welded with a thermal insulation flange 27, a thermal insulation ceramic support is welded with a thermal insulation ceramic support, a thermal insulation ceramic support 20 is also welded with a thermal insulation ceramic plug 14, a thermal insulation ceramic plug 14 is disposed on the thermal insulation ceramic support, a thermal insulation ceramic plug 14, a thermal insulation ceramic plug 6, a thermal insulation plug 6 is disposed on a thermal insulation ceramic plug 14, a thermal insulation ceramic plug 6, a thermal insulation ceramic plug 14 is disposed on a thermal insulation ceramic plug 14, a thermal insulation plug 14 is disposed on a thermal insulation ceramic plug 6, a thermal insulation ceramic plug 6, a thermal insulation plug 6 is disposed on a thermal insulation plug 6, a thermal insulation plug 6 is disposed on a thermal insulation plug 6, a thermal insulation plug 6 is disposed on a thermal insulation plug 6, a thermal insulation plug 6.
Nonmetal refractory material tee bend 4, disk seat 1, valve clack 6, valve rod 27, fire-resistant rod iron 21, closing cap 8, if can cast tee bend 4 and disk seat as an organic whole through the mould (see figure 5), cast valve clack, valve rod, rod iron as an organic whole (see figure 6), can hand over the drawing after drawing by the customization of refractory material producer, relevant equipment and material die-casting shaping are reused behind the refractory material producer according to drawing preparation mould, because die-casting forming die cost is very high, we also can choose to purchase suitable fire-resistant tee bend, disk seat, valve clack, valve rod, rod iron on market or the online, the closing cap etc. disposes the preparation, the preparation method step is shown as figure 5-15.
The technical scheme is that a fire-resistant three-way valve 4 with approximate external dimensions, a valve clack 6, a valve rod (fire-resistant ceramic pipe) 27, an upper cover 8, a ceramic fire-resistant screw 7 are purchased in the market or on the internet, fire-resistant cement 28 and a fire-resistant steel rod 21 are purchased, the purchased fire-resistant three-way valve 4, a valve clack 6 and an upper cover 8 are trimmed, the outer surface is required to be aligned, an inner hole phi A + of the upper cover 8 is trimmed to be matched with an outer diameter phi A-of the valve rod (fire-resistant ceramic pipe) 27, detailed reference is made to FIG. 5 and FIG. 6, an M20 depth 50 is machined to the fire-resistant metal steel rod 21, a damping steel bar 20 is welded to the lower portion of the steel rod 21, the valve clack 6 and the valve rod (fire-resistant ceramic pipe) 27 are drilled to facilitate screwing in a ceramic fire-resistant screw 7, the valve rod (fire-resistant ceramic pipe) 27 and the valve clack 6 are fixed together by using a ceramic fire-resistant valve rod (fire-resistant ceramic pipe) 7, the valve clack 6 is positioned at the central position of the valve clack 6, the valve clack 6 is positioned on a heat-insulating valve seat 6, the heat-resistant three-resistant cylinder 6 is positioned, a heat-resistant three-way valve seat 6, a heat-resistant three-way valve 35, a heat-resistant cylinder 35 is installed, a heat-resistant three-way valve seat 35, a heat-resistant three-resistant cylinder 35, a heat-transfer valve seat 6, a heat-transfer valve 35 is manufactured, a heat-transfer valve 35 is manufactured, a heat-transfer valve is manufactured, a heat-resistant three-transfer valve 35, a heat-transfer valve is manufactured, a heat-resistant three-transfer valve is manufactured, a heat-transfer valve 35, a heat-transfer valve is manufactured, a heat-transfer valve is manufactured, a heat-transfer valve is a heat-transfer.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may use the above-mentioned technical contents to change or modify the equivalent embodiment into equivalent changes and apply to other fields, but any simple modification, equivalent change and modification made to the above embodiments according to the technical matters of the present invention will still fall within the protection scope of the technical solution of the present invention.
Claims (6)
1. A high-temperature flue gas stop valve comprises a valve body, wherein the valve body comprises an inner cavity, a valve clack, a valve rod and a valve seat, the inner cavity and the valve seat are integrated, the inner cavity and the valve seat are made of non-metal refractory materials, a steel sheath wraps the inner cavity, refractory fiber cotton is filled between the inner cavity and the steel sheath, the valve rod is connected with the valve clack, the valve rod is made of a refractory ceramic tube, a refractory steel rod is arranged at the upper part outside the valve body at the center of the refractory ceramic tube, refractory cement is filled in a gap between the refractory steel rod and the refractory ceramic tube and between the refractory steel rod and the valve clack, a heat conduction blocking device is arranged at the top of the refractory steel rod, a transmission device is arranged above each device of a heat conduction group, the transmission device is controlled by a display P L C controller, the transmission device is a telescopic rod controlled by a cylinder or a torque servo motor, and an electromagnetic conductance line.
2. The high-temperature flue gas stop valve of claim 1, wherein: the valve clack is in any one of a cylinder, an inverted cone or a sphere.
3. The high-temperature flue gas stop valve of claim 1, wherein: the fire-resistant ceramic tube is sleeved with a flexible fire-resistant ceramic fiber sealing ring, the sealing ring is fixed outside the valve body, and a pressing plate for fixing is arranged on the sealing ring.
4. The high-temperature flue gas stop valve of claim 1, wherein: the inner cavity is a three-way inner cavity, the inner diameter of the steel sheath is larger than the outer diameter of the three-way inner cavity by more than 10mm, and the length of the steel sheath is larger than the length of the three-way inner cavity by more than 10 mm.
5. The high-temperature flue gas stop valve of claim 1, wherein: the lower part of the valve clack is provided with a sealing cover, the upper part of the refractory ceramic pipe penetrates through the sealing cover, and the lower part of the refractory steel bar is welded with a damping steel bar.
6. The high-temperature flue gas stop valve of claim 5, wherein: the top of the fire-resistant steel bar is provided with a connecting and positioning plate, the upper part of the connecting and positioning plate is provided with a raised flange, and a heat insulation pad is arranged between the connecting and positioning plate and the raised flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822047871.5U CN211009902U (en) | 2018-12-07 | 2018-12-07 | High-temperature flue gas stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822047871.5U CN211009902U (en) | 2018-12-07 | 2018-12-07 | High-temperature flue gas stop valve |
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| Publication Number | Publication Date |
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| CN211009902U true CN211009902U (en) | 2020-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822047871.5U Active CN211009902U (en) | 2018-12-07 | 2018-12-07 | High-temperature flue gas stop valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538768A (en) * | 2018-12-07 | 2019-03-29 | 山东建筑大学 | A kind of high-temperature flue gas shut-off valve and preparation method thereof |
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2018
- 2018-12-07 CN CN201822047871.5U patent/CN211009902U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538768A (en) * | 2018-12-07 | 2019-03-29 | 山东建筑大学 | A kind of high-temperature flue gas shut-off valve and preparation method thereof |
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