CN107956900B - Waste heat boiler process gas regulating valve - Google Patents
Waste heat boiler process gas regulating valve Download PDFInfo
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- CN107956900B CN107956900B CN201711131000.5A CN201711131000A CN107956900B CN 107956900 B CN107956900 B CN 107956900B CN 201711131000 A CN201711131000 A CN 201711131000A CN 107956900 B CN107956900 B CN 107956900B
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- valve
- process gas
- sleeve
- heat exchange
- tube
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/04—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves
- F16K11/044—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves with movable valve members positioned between valve seats
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding Valves (AREA)
Abstract
The invention relates to the technical field of valve design, and particularly discloses a waste heat boiler process gas regulating valve which comprises a central tube process gas cavity body formed by a valve core, a valve seat, an inner cylinder and a sealing ring, and a heat exchange tube process gas cavity body formed by a tube plate, an outer cylinder, a conical cylinder and an inner cylinder. The low-temperature heat exchange tube process gas is fully and uniformly mixed with the high-temperature center tube process gas flowing through the center tube process gas cavity after passing through the heat exchange tube process gas cavity, so that the process gas temperature at the outlet of the regulating valve can be ensured to be stable within a certain range, and the regulating valve has good regulating performance.
Description
Technical Field
The invention belongs to the technical field of valve design, and particularly relates to a process gas regulating valve of a waste heat boiler.
Background
The shell-and-tube waste heat boiler has a simple structure, can recover high-temperature and high-pressure gas heat, and is widely applied to petrochemical industry. Especially in industries such as coal-to-synthetic ammonia, methanol and natural gas, the temperature of the process gas after heat exchange by a waste heat boiler needs to be controlled in order to achieve high reaction efficiency due to the requirements of the process. A heat insulation central tube is arranged in the shell-and-tube waste heat boiler, and the temperature of the high-temperature process gas is basically not reduced after passing through the central tube and then is mixed with the process gas after being cooled by the heat exchange tube. The method for adjusting the outlet temperature of the process gas is generally to set an adjusting valve at the outlet of the central tube, and adjust the outlet temperature by controlling the flow of the high-temperature gas passing through the central tube.
At present, the outlet regulating valve of the commonly adopted waste heat boiler is one-way regulation, namely only the flow of high-temperature gas flowing through the central tube is controlled. However, the method has a single adjusting means, meanwhile, even mixing of low-temperature gas and high-temperature gas cannot be ensured, if the outlet temperature of the waste heat boiler is not even, normal operation of a subsequent process can be affected, and the problems of over-temperature of equipment or low reaction efficiency of a catalyst of a post system and the like can be generated.
The prior art does not see a waste heat boiler process gas regulating valve which can uniformly mix the high-temperature process gas flowing through the central tube with the low-temperature process gas flowing through the heat exchange tube and can realize the double regulation of the process gas flow of the central tube and the heat exchange tube.
Disclosure of Invention
The invention aims to provide a waste heat boiler process gas regulating valve which realizes double regulation of process gas flow of a central pipe and a heat exchange pipe.
The technical scheme of the invention is as follows:
a process gas regulating valve of a waste heat boiler comprises a valve core, a valve seat, a tube plate, a heat exchange tube, an outer cylinder, a cone cylinder, an inner cylinder and a sealing ring;
the valve core comprises a valve clack, a rib plate, a valve sleeve, a valve rod, a fixed plate I and a sliding rail;
the valve clack is a circular flat plate, one end of the valve rod is fixedly arranged at the central position of the valve clack, and the axis of the valve rod is vertical to the valve clack;
the rib plates are rectangular flat plates, four rib plates are arranged on the side surfaces of the valve rods at intervals of 90 degrees respectively by taking the valve rods as shafts, and the four rib plates are perpendicular to the valve clacks;
the valve sleeve is cylindrical, is arranged on the outer side of the rib plate and is coaxial with the valve rod;
the fixed plates I are uniformly arranged on the inner side of the upper edge of the valve sleeve, round holes are formed in each fixed plate I, and the fixed plates I are perpendicular to the axis of the valve rod;
the sliding rail is uniformly arranged on the outer wall of the valve sleeve and is parallel to the axis of the valve sleeve;
the tube plate comprises a central tube, a flat plate and a toggle joint; the flat plate is in a circular ring shape, a central tube is arranged at the inner circumference of the flat plate, a toggle joint is arranged at the outer circumference of the flat plate, and the central tube, the flat plate and the toggle joint are coaxial;
the cone cylinder comprises an outer sleeve and a check ring; the outer sleeve is in a horn mouth shape, and the retainer ring is in a circular ring shape; the check ring is arranged at one end of the outer sleeve with smaller diameter and is coaxial with the outer sleeve;
the inner cylinder comprises an inner cylinder sleeve and a sliding rail sleeve; the sliding rail sleeve is arranged on the side wall of the inner cylinder sleeve and is arranged along the axial direction of the inner cylinder sleeve;
the sealing ring comprises a circular ring and a fixing plate II, and the fixing plate II is arranged on the inner edge of the circular ring; the shape and the number of the fixing plates II are the same as those of the fixing plates I;
the valve core is arranged on the inner side of the inner cylinder, and the sliding rail axially reciprocates in the sliding rail sleeve;
one end of the outer cylinder is welded and fixed with the toggle joint, and the other end of the outer cylinder is connected with one end of the conical cylinder with larger outer sleeve diameter through a bolt;
the bottom end of the inner cylinder sleeve is welded and fixed with the central tube, and the top end of the inner cylinder sleeve is positioned in the outer cylinder;
the valve seat is in a circular tube shape and is arranged in the central tube and is connected with the inner wall of the central tube;
the valve core is positioned in the inner cylinder, and the sliding rail is matched with the sliding rail sleeve; the sealing ring is arranged on the upper edge of the valve sleeve, and a fixing plate II on the sealing ring is connected with a fixing plate I of the valve core in a matching way through bolts;
the flat plate is provided with a through hole, and the heat exchange tube is welded and fixed at the through hole on the flat plate.
The fixing plates I are provided with N blocks, N is more than or equal to 3, and each fixing plate I is provided with 1 or 2 round holes; the number of the sliding rails is M, and M is more than or equal to 2.
The length of the sliding rail is 10-20 mm shorter than the height of the valve sleeve.
The number of the sliding rail sleeves is the same as that of the sliding rails, and the height of the sliding rail sleeves is the same as that of the valve sleeve.
The number and the position arrangement of the heat exchange tubes and the through holes are set according to the actual demands of the valves.
A 5-10 mm installation gap is arranged between the outer wall of the valve sleeve and the inner wall of the inner cylinder sleeve; the sealing ring and the inner cylinder are provided with a 5-10 mm installation gap.
The valve core, the valve seat, the inner cylinder and the sealing ring form a central tube process air cavity, and the tube plate, the outer cylinder, the conical cylinder and the inner cylinder form a heat exchange tube process air cavity.
The valve core reciprocates along the axial direction, on one hand, the valve core cooperates with the valve seat to control the process air flow of the central tube flowing through the central tube, on the other hand, the valve core moves together with the sealing ring, and cooperates with the retainer ring of the cone to control the process air flow of the heat exchange tube flowing through the heat exchange tube;
the low-temperature heat exchange tube process gas is fully mixed with the high-temperature central tube process gas flowing through the central tube process gas cavity after passing through the heat exchange tube process gas cavity.
One limit position of the regulating valve is that the valve core moves along the axial direction to be completely closed with the valve seat to form a seal, so that the process gas of the central tube basically does not circulate, and the process gas of the heat exchange tube flows out of the regulating valve from the inner side of the retainer ring of the cone.
The other limit position of the regulating valve is that the sealing ring and the retainer ring of the cone cylinder are completely closed to form a seal, so that the process gas of the heat exchange tube basically does not circulate, and the process gas of the central tube flows out of the regulating valve from the inner side of the circular ring of the sealing ring.
The invention has the remarkable effects that:
(1) The invention solves the problem of uneven mixing of the high-temperature process gas of the central tube and the low-temperature process gas flowing through the heat exchange tube through a simple and ingenious structure, can fully and uniformly mix the high-temperature process gas and the low-temperature process gas, and ensures the uniformity of the temperature of the process gas at the outlet of the waste heat boiler.
(2) The device has the advantages of simple structure and convenient operation, realizes the double regulation function of the process air flow of the central tube and the heat exchange tube, can more accurately control the temperature range of the process air at the outlet of the waste heat boiler, and has good regulation performance.
Drawings
FIG. 1 is a schematic diagram of a regulating valve;
FIG. 2 is a cross-sectional view taken along the direction A-A in FIG. 1;
FIG. 3 is a schematic diagram of a valve core structure;
FIG. 4 is a schematic view of a tube sheet construction;
FIG. 5 is a schematic view of a cone structure;
FIG. 6 is a schematic view of an inner barrel structure;
FIG. 7 is a schematic view of a seal ring structure.
In the figure: 1 is a valve core; 2 is a valve seat; 3 is a tube plate; 4 is a heat exchange tube; 5 is an outer cylinder; 6 is a cone; 7 is an inner cylinder; 8 is a sealing ring; 1-1 is a valve clack; 1-2 are rib plates; 1-3 is a valve sleeve; 1-4 is a valve rod; 1-5 are fixed plates I;1-6 are sliding rails; 3-1 is a central tube; 3-2 is a flat plate; 3-3 is a toggle joint; 6-1 is a jacket; 6-2 is a retainer ring; 7-1 is an inner cylinder sleeve; 7-2 is a sliding rail sleeve; 8-1 is a circular ring; 8-2 is a fixed plate II.
Detailed Description
The invention will be described in further detail with reference to the accompanying drawings and specific examples.
The waste heat boiler process gas regulating valve as shown in fig. 1-2 comprises a valve core 1, a valve seat 2, a tube plate 3, a heat exchange tube 4, an outer cylinder 5, a conical cylinder 6, an inner cylinder 7 and a sealing ring 8.
As shown in FIG. 3, the valve core 1 comprises a valve clack 1-1, a rib plate 1-2, a valve sleeve 1-3, a valve rod 1-4, a fixing plate I1-5 and a sliding rail 1-6. The valve clack 1-1 is a circular flat plate, one end of the valve rod 1-4 is fixedly arranged at the center of the valve clack 1-1, and the axis of the valve rod 1-4 is perpendicular to the valve clack 1-1.
The rib plates 1-2 are rectangular flat plates, four rib plates are arranged on the sides of the valve rods 1-4 respectively at intervals of 90 degrees by taking the valve rods 1-4 as shafts. The four rib plates 1-2 are perpendicular to the valve clack 1-1.
The valve sleeve 1-3 is cylindrical, is arranged on the outer side of the rib plate 1-2 and is coaxial with the valve rod 1-4.
The fixing plates I1-5 are provided with N blocks, N is more than or equal to 3, the N blocks are uniformly arranged on the inner side of the upper edge of the valve sleeve 1-3, and each fixing plate I1-5 is provided with 1 or 2 round holes. The fixing plate I1-5 is perpendicular to the axis of the valve rod 1-4.
M sliding rails 1-6 are arranged, M is more than or equal to 2, and are uniformly arranged on the outer wall of the valve sleeve 1-3 and are parallel to the axis of the valve sleeve 1-3. The length of the sliding rail 1-6 is 10-20 mm shorter than the height of the valve sleeve 1-3.
As shown in fig. 4, the tube plate 3 includes a central tube 3-1, a flat plate 3-2 and a toggle 3-3. The flat plate 3-2 is in a circular ring shape, the central tube 3-1 is arranged at the inner circumference of the flat plate 3-2, and the toggle joints 3-3 are arranged at the outer circumference of the flat plate 3-2. The central tube 3-1, the flat plate 3-2 and the toggle joint 3-3 are coaxial.
As shown in fig. 5, the cone 6 includes an outer jacket 6-1 and a retainer ring 6-2. The jacket 6-1 is in a horn mouth shape, and the retainer ring 6-2 is in a circular ring shape. The retainer ring 6-2 is arranged at the smaller diameter end of the outer sleeve 6-1 and is coaxial with the outer sleeve 6-1.
As shown in FIG. 6, the inner cylinder 7 comprises an inner cylinder sleeve 7-1 and a sliding rail sleeve 7-2. The sliding rail sleeve 7-2 is arranged on the side wall of the inner barrel sleeve 7-1 and is arranged along the axial direction of the inner barrel sleeve 7-1. The number of the slide rail sleeves 7-2 is the same as that of the slide rails 1-6, and the height of the slide rail sleeves 7-2 is the same as that of the valve sleeves 1-3.
As shown in fig. 7, the sealing ring 8 includes a ring 8-1 and a fixing plate II8-2, and the fixing plate II8-2 is disposed on an inner edge of the ring 8-1. The shape and the number of the fixing plates II8-2 are the same as those of the fixing plates I1-5.
The valve core 1 is arranged on the inner side of the inner cylinder 7, a 5-10 mm installation gap is arranged between the outer wall of the valve sleeve 1-3 and the inner wall of the inner cylinder sleeve 7-1, and the sliding rail 1-6 axially reciprocates in the sliding rail sleeve 7-2.
One end of the outer cylinder 5 is welded and fixed with the toggle joint 3-3, the other end of the outer cylinder 5 is connected with one end of the outer sleeve 6-1 of the cone cylinder 6 with larger diameter through a bolt, and the inner side of the retainer ring 6-2 of the cone cylinder 6 is used as an outlet of the regulating valve. The bottom end of the inner cylinder sleeve 7-1 is welded and fixed with the central tube 3-1, and the top end of the inner cylinder sleeve 7-1 is positioned in the outer cylinder 5. The valve seat 2 is in a circular tube shape, is arranged in the central tube 3-1 and is connected with the inner wall of the central tube 3-1. The valve core 1 is positioned in the inner cylinder 7, wherein the valve clack 1-1 can form a seal with the inner side of the upper edge of the valve seat 2, and the sliding rail 1-6 and the sliding rail sleeve 7-2 are matched and installed. The sealing ring 8 is arranged on the upper edge of the valve sleeve 1-3, and a fixing plate II8-2 on the sealing ring 8 is connected with a fixing plate I1-5 of the valve core 1 in a matched mode through bolts. The sealing ring 8 and the inner cylinder 7 are provided with a 5-10 mm installation gap.
The flat plate 3-2 is provided with a through hole, and the heat exchange tube 4 is welded and fixed at the through hole on the flat plate 3-2. The number and the position arrangement of the heat exchange tubes 4 and the through holes are set according to the actual demands of the valves.
The valve core 1, the valve seat 2, the inner cylinder 7 and the sealing ring 8 form a central tube process air cavity, and the tube plate 3, the outer cylinder 5, the conical cylinder 6 and the inner cylinder 7 form a heat exchange tube process air cavity.
The valve core 1 reciprocates along the axial direction, on one hand, the valve core 1 cooperates with the valve seat 2 to control the process air flow of the central tube flowing through the central tube 3-1, and on the other hand, the valve core 1 moves together with the sealing ring 8 to cooperate with the retainer ring 6-2 of the cone 6 to control the process air flow of the heat exchange tube flowing through the heat exchange tube 4. The low-temperature heat exchange tube process gas is fully mixed with the high-temperature center tube process gas flowing through the center tube process gas cavity after passing through the heat exchange tube process gas cavity, so that the process gas temperature at the outlet of the regulating valve is ensured to be stable within a certain range.
One of the two limit positions of the regulating valve is that the valve core 1 moves along the axial direction to be completely closed with the valve seat 2 to form a seal, so that the process gas of the central tube basically does not circulate, and the process gas of the heat exchange tube flows out of the regulating valve from the inner side of the retainer ring 6-2 of the cone 6; the other is that the sealing ring 8 is completely closed with the retainer ring 6-2 of the cone 6 to form a seal, so that the heat exchange tube process gas basically does not circulate, and the center tube process gas flows out of the regulating valve from the inner side of the circular ring 8-1 of the sealing ring 8.
Claims (8)
1. The utility model provides a waste heat boiler process gas governing valve which characterized in that: the device comprises a valve core (1), a valve seat (2), a tube plate (3), a heat exchange tube (4), an outer cylinder (5), a cone cylinder (6), an inner cylinder (7) and a sealing ring (8);
the valve core (1) comprises a valve clack (1-1), a rib plate (1-2), a valve sleeve (1-3), a valve rod (1-4), a fixing plate I (1-5) and a sliding rail (1-6);
the valve clack (1-1) is a circular flat plate, one end of the valve rod (1-4) is fixedly arranged at the center of the valve clack (1-1), and the axis of the valve rod (1-4) is perpendicular to the valve clack (1-1);
the rib plates (1-2) are rectangular flat plates, four rib plates are arranged on the side surfaces of the valve rod (1-4) at intervals of 90 degrees respectively by taking the valve rod (1-4) as an axis, and the four rib plates (1-2) are perpendicular to the valve clack (1-1);
the valve sleeve (1-3) is cylindrical, is arranged on the outer side of the rib plate (1-2) and is coaxial with the valve rod (1-4);
the fixed plates I (1-5) are uniformly arranged on the inner side of the upper edge of the valve sleeve (1-3), round holes are formed in each fixed plate I (1-5), and the fixed plates I (1-5) are perpendicular to the axis of the valve rod (1-4);
the sliding rail (1-6) is uniformly arranged on the outer wall of the valve sleeve (1-3) and is parallel to the axis of the valve sleeve (1-3);
the tube plate (3) comprises a central tube (3-1), a flat plate (3-2) and a toggle joint (3-3); the flat plate (3-2) is in a circular ring shape, a central tube (3-1) is arranged at the inner circumference of the flat plate (3-2), a toggle joint (3-3) is arranged at the outer circumference of the flat plate (3-2), and the central tube (3-1), the flat plate (3-2) and the toggle joint (3-3) are coaxial;
the cone (6) comprises an outer sleeve (6-1) and a retainer ring (6-2); the jacket (6-1) is in a bell mouth shape, and the retainer ring (6-2) is in a ring shape; the retainer ring (6-2) is arranged at one end of the outer sleeve (6-1) with smaller diameter and is coaxial with the outer sleeve (6-1);
the inner cylinder (7) comprises an inner cylinder sleeve (7-1) and a sliding rail sleeve (7-2); the sliding rail sleeve (7-2) is arranged on the side wall of the inner barrel sleeve (7-1) and is arranged along the axial direction of the inner barrel sleeve (7-1);
the sealing ring (8) comprises a circular ring (8-1) and a fixing plate II (8-2), and the fixing plate II (8-2) is arranged on the inner edge of the circular ring (8-1); the shape and the number of the fixing plates II (8-2) are the same as those of the fixing plates I (1-5);
the valve core (1) is arranged on the inner side of the inner cylinder (7), and the sliding rail (1-6) axially reciprocates in the sliding rail sleeve (7-2);
one end of the outer cylinder (5) is welded and fixed with the toggle joint (3-3), and the other end of the outer cylinder (5) is connected with one end of the outer sleeve (6-1) of the conical cylinder (6) with larger diameter through a bolt;
the bottom end of the inner cylinder sleeve (7-1) is welded and fixed with the central tube (3-1), and the top end of the inner cylinder sleeve (7-1) is positioned in the outer cylinder (5);
the valve seat (2) is in a circular tube shape, is arranged in the central tube (3-1) and is connected with the inner wall of the central tube (3-1);
the valve core (1) is positioned in the inner cylinder (7), and the sliding rail (1-6) and the sliding rail sleeve (7-2) are installed in a matched mode; the sealing ring (8) is arranged at the upper edge of the valve sleeve (1-3), and a fixing plate II (8-2) on the sealing ring (8) is connected with a fixing plate I (1-5) of the valve core (1) in a matching way through bolts;
the flat plate (3-2) is provided with a through hole, and the heat exchange tube (4) is welded and fixed at the through hole on the flat plate (3-2);
the valve core (1), the valve seat (2), the inner cylinder (7) and the sealing ring (8) form a central tube process air cavity, and the tube plate (3), the outer cylinder (5), the conical cylinder (6) and the inner cylinder (7) form a heat exchange tube process air cavity;
the valve core (1) reciprocates along the axial direction, on one hand, the valve core (1) cooperates with the valve seat (2) to control the process air flow of the central tube flowing through the central tube (3-1), on the other hand, the valve core (1) moves together with the sealing ring (8), and cooperates with the retainer ring (6-2) of the cone (6) to control the process air flow of the heat exchange tube flowing through the heat exchange tube (4);
the low-temperature heat exchange tube process gas is fully mixed with the high-temperature central tube process gas flowing through the central tube process gas cavity after passing through the heat exchange tube process gas cavity.
2. A waste heat boiler process gas regulating valve as claimed in claim 1, wherein: the fixing plates I (1-5) are provided with N blocks, N is more than or equal to 3, and each fixing plate I (1-5) is provided with 1 or 2 round holes; the number of the sliding rails (1-6) is M, and M is more than or equal to 2.
3. A waste heat boiler process gas regulating valve as claimed in claim 2, wherein: the length of the sliding rail (1-6) is 10-20 mm shorter than the height of the valve sleeve (1-3).
4. A waste heat boiler process gas regulating valve as claimed in claim 3, wherein: the number of the sliding rail sleeves (7-2) is the same as that of the sliding rails (1-6), and the height of the sliding rail sleeves (7-2) is the same as that of the valve sleeve (1-3).
5. A waste heat boiler process gas regulating valve as set forth in claim 4, wherein: the number and the position arrangement of the heat exchange tubes (4) and the through holes are set according to the actual demands of the valves.
6. A waste heat boiler process gas regulating valve as set forth in claim 5, wherein: a 5-10 mm installation gap is arranged between the outer wall of the valve sleeve (1-3) and the inner wall of the inner cylinder sleeve (7-1); a5-10 mm installation gap is arranged between the sealing ring (8) and the inner cylinder (7).
7. A waste heat boiler process gas regulating valve as claimed in any one of claims 1 to 6, wherein: one limit position of the regulating valve is that the valve core (1) moves along the axial direction to be completely closed with the valve seat (2) to form a seal, so that the process gas of the central tube basically does not circulate, and the process gas of the heat exchange tube flows out of the regulating valve from the inner side of the retainer ring (6-2) of the cone (6).
8. A waste heat boiler process gas regulating valve as set forth in claim 7, wherein: the other limit position of the regulating valve is that the sealing ring (8) and the retainer ring (6-2) of the cone (6) are completely closed to form a seal, so that the process gas of the heat exchange tube is basically not circulated, and the process gas of the central tube flows out of the regulating valve from the inner side of the circular ring (8-1) of the sealing ring (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711131000.5A CN107956900B (en) | 2017-11-15 | 2017-11-15 | Waste heat boiler process gas regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711131000.5A CN107956900B (en) | 2017-11-15 | 2017-11-15 | Waste heat boiler process gas regulating valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107956900A CN107956900A (en) | 2018-04-24 |
| CN107956900B true CN107956900B (en) | 2023-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711131000.5A Active CN107956900B (en) | 2017-11-15 | 2017-11-15 | Waste heat boiler process gas regulating valve |
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| CN (1) | CN107956900B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007155328A (en) * | 2005-12-01 | 2007-06-21 | Alstom Technology Ltd | Waste heat boiler |
| CN203847731U (en) * | 2014-04-03 | 2014-09-24 | 天华化工机械及自动化研究设计院有限公司 | Automatically-centered high-temperature regulating valve |
| CN203979466U (en) * | 2014-05-21 | 2014-12-03 | 甘肃蓝科石化高新装备股份有限公司 | A kind of shell-and-tube exhaust-heat boiler modulating valve |
| CN105909856A (en) * | 2016-05-19 | 2016-08-31 | 横店集团东磁股份有限公司 | Special combination valve structure for cold storage bed of magnetic refrigerator |
| CN205715890U (en) * | 2015-09-16 | 2016-11-23 | 吴忠仪表有限责任公司 | Waste heat boiler hot process gases dissipates cage |
| CN207609813U (en) * | 2017-11-15 | 2018-07-13 | 北京航化节能环保技术有限公司 | A kind of waste heat boiler process gas regulating valve |
-
2017
- 2017-11-15 CN CN201711131000.5A patent/CN107956900B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007155328A (en) * | 2005-12-01 | 2007-06-21 | Alstom Technology Ltd | Waste heat boiler |
| CN203847731U (en) * | 2014-04-03 | 2014-09-24 | 天华化工机械及自动化研究设计院有限公司 | Automatically-centered high-temperature regulating valve |
| CN203979466U (en) * | 2014-05-21 | 2014-12-03 | 甘肃蓝科石化高新装备股份有限公司 | A kind of shell-and-tube exhaust-heat boiler modulating valve |
| CN205715890U (en) * | 2015-09-16 | 2016-11-23 | 吴忠仪表有限责任公司 | Waste heat boiler hot process gases dissipates cage |
| CN105909856A (en) * | 2016-05-19 | 2016-08-31 | 横店集团东磁股份有限公司 | Special combination valve structure for cold storage bed of magnetic refrigerator |
| CN207609813U (en) * | 2017-11-15 | 2018-07-13 | 北京航化节能环保技术有限公司 | A kind of waste heat boiler process gas regulating valve |
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| Publication number | Publication date |
|---|---|
| CN107956900A (en) | 2018-04-24 |
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