Valve fixing device of air separation cold box
By designing a support frame, a valve position fixing mechanism, and a counterweight limit frame, the problem of excessive stress caused by cold box valve deformation due to cold shrinkage was solved, achieving safe and stable fixing of the cold box valve and avoiding damage.
Patent Information
- Application Number
- CN202423083883.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2034-12-13
AI Technical Summary
In the existing technology, when cold box valves are installed using conventional supports and hangers, the displacement of the cold box valves after cold shrinkage and deformation is restricted, resulting in excessive stress, which in turn damages the cold box valves and pipelines.
A fixing device including a support frame, a valve position fixing mechanism, and a counterweight limiting frame is designed. The valve is fixed by means of a fixed pulley mechanism and a rope, and the force balance between the valve's own weight and the counterweight is utilized to avoid stress caused by cold contraction deformation.
This ensures that the valves in the cold box are stably fixed in a cryogenic state, avoiding stress damage and improving safety and practicality.
Smart Images
Figure CN223925246U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to air separation equipment installation technical field more specifically, relate to a valve fixing device of air separation cold box. BACKGROUND
[0002] Air separation device is the equipment that separates oxygen and nitrogen in air under cryogenic state. Cold box is the core equipment of air separation device, which is composed of cold box steel structure, cold box internal equipment, pipeline, cold box valve and electrical instrument.
[0003] Among them, the weight of cold box valve is heavy, and the size is large. Because the pipeline in the cold box is installed at normal temperature, and under the operation of deep cooling state, cold shrinkage deformation will occur, and the stress will cause displacement of the cold box valve. If the conventional support hanger is used to install the cold box valve, the displacement of the cold box valve after the cold shrinkage deformation is limited, which causes excessive stress of the cold box valve, and even the pipeline in the cold box, and further causes damage to the cold box valve and the pipeline.
[0004] However, at present, there is no effective solution to the above problems existing in the installation and fixation process of the cold box valve. Therefore, it is urgent to design a fixing device for the installation of the cold box valve in the air separation device to ensure the safe fixation of the cold box valve. UTILITY MODEL CONTENTS
[0005] In view of the above problems, the utility model aims at providing a valve fixing device of air separation cold box to solve the problem that in the prior art, the conventional support hanger is used to install and fix the cold box valve, which limits the displacement of the cold box valve after the cold shrinkage deformation, and thus easily causes excessive stress of the cold box valve, and further damages the cold box valve and even the pipeline in the cold box.
[0006] The valve fixing device of air separation cold box provided by the utility model comprises a support frame, a valve position fixing mechanism and a counterweight limiting frame.
[0007] One end of the support frame is fixed on the outer side wall of the cold box panel.
[0008] The valve position fixing mechanism comprises a fixed pulley mechanism arranged at the bottom of the other end of the support frame, a rope body wound on the fixed pulley mechanism, a counterweight connected with one end of the rope body and a lifting ring connected with the other end of the rope body. The lifting ring is fixed on the valve.
[0009] One end of the counterweight limiting frame is fixed on the outer side wall of the cold box panel, and a vertical limiting through hole matched with the counterweight is arranged at the other end of the counterweight limiting frame.
[0010] In addition, preferably, the support frame comprises a horizontal hanger beam fixed to the outer sidewall of the cold box panel, an upper inclined support fixed between the upper portion of the horizontal hanger beam and the outer sidewall of the cold box panel, and a lower inclined support fixed between the lower portion of the horizontal hanger beam and the outer sidewall of the cold box panel.
[0011] In addition, preferably, a reinforcing beam is arranged at the position corresponding to the support frame on the inner sidewall of the cold box panel.
[0012] In addition, preferably, the fixed pulley mechanism is a pulley block comprising two fixed pulleys.
[0013] In addition, preferably, the two ends of the rope are connected to the lifting ring through a first rope clamp and to the connecting hole on the counterweight through a second rope clamp, respectively.
[0014] In addition, preferably, the lifting ring is arranged on both sides of the valve, and the lifting rings on both sides of the valve are connected to one end of the rope through a first connecting rope.
[0015] In addition, preferably, the counterweight comprises two counterweight columns, the two counterweight columns are connected through a connecting plate, a connecting hole is arranged on each of the counterweight columns, and the connecting holes of the two counterweight columns are connected to the other end of the rope through a second connecting rope.
[0016] In addition, preferably, a gap is arranged between the bottom of the counterweight and the top surface of the cold box steel structure platform.
[0017] In addition, preferably, the top end of the counterweight is higher than the top end of the vertical limiting through hole, and the bottom end of the counterweight is lower than the bottom end of the vertical limiting through hole.
[0018] In addition, preferably, the counterweight limiting frame comprises a first lateral limiting plate and a second lateral limiting plate arranged on the two sides of the counterweight, respectively, and a first horizontal limiting plate and a second horizontal limiting plate vertically arranged between the first lateral limiting plate and the second lateral limiting plate, the vertical limiting through hole is surrounded by the first lateral limiting plate, the second lateral limiting plate, the first horizontal limiting plate, and the second horizontal limiting plate, and the end portions of the first lateral limiting plate and the second lateral limiting plate are fixed to the outer sidewall of the cold box panel.
[0019] From the above technical solutions can be known, the valve fixing device of the air separation cold box provided by the utility model, through the structural design of the support frame and the valve position fixing mechanism, when the valve is installed, the length of the rope body above the lifting ring is adjusted, the rope body above the lifting ring is stressed, the distance between the counterweight and the cold box steel structure platform is ensured to meet the requirements, the fixing of the valve can be realized, the tension of the rope body on the upper part of the valve is converted into the gravity of the counterweight through the fixed pulley mechanism, and the verticality of the counterweight is ensured not to deviate through the structural design of the counterweight limiting frame, so that the valve is fixed by utilizing the force balance between the gravity of the valve itself and the counterweight, when the valve is cold shrunk and deformed, stress is not generated in the fixing of the valve; the stable fixing of the valve outside the cold box is ensured, and the utility model has the advantages of safety, practicality, high efficiency and the like. BRIEF DESCRIPTION OF DRAWINGS
[0020] Other objects and results of the utility model will be more apparent and easy to understand by referring to the following content of the specification in combination with the drawings and with the more comprehensive understanding of the utility model.
[0021] Fig. 1 It is a structure schematic diagram of the valve fixing device of the air separation cold box according to the utility model embodiment;
[0022] Fig. 2 It is a structure schematic diagram of the counterweight according to the utility model embodiment;
[0023] Fig. 3 It is a top view structure schematic diagram of the counterweight limiting frame according to the utility model embodiment.
[0024] In the drawings, 11-horizontal hanger beam, 12-upper inclined support, 13-lower inclined support, 14-strengthening beam, 21-fixed pulley mechanism, 22-rope body, 23-counterweight, 231-connection hole, 232-counterweight stand, 233-connection plate, 24-lifting ring, 25-first rope clamp, 26-second rope clamp, 31-first lateral limiting plate, 32-second lateral limiting plate, 33-first horizontal limiting plate, 34-second horizontal limiting plate, 35-vertical limiting through hole, 4-cold box panel, 5-valve, 6-cold box steel structure platform.
[0025] The same reference numbers in all the drawings indicate similar or corresponding features or functions. DETAILED DESCRIPTION
[0026] In view of the foregoing, in the prior art, the cold box valve is installed and fixed by adopting the conventional support hanger, since the displacement of the cold box valve after cold shrinkage is limited, the stress of the cold box valve is easily too large, the cold box valve is damaged, and even the pipeline in the cold box is damaged, a valve fixing device of an air separation cold box is provided.
[0027] The specific embodiments of the utility model will be described in detail below with reference to the drawings.
[0028] In order to illustrate the valve fixing device of the air separation cold box provided by the utility model, Fig. 1 The positive structure of the valve fixing device of the air separation cold box according to an embodiment of the utility model is shown. Fig. 2 The structure of the counterweight according to an embodiment of the utility model is shown. Fig. 3 The top view structure of the counterweight limiting frame according to an embodiment of the utility model is shown.
[0029] As Figs. 1 to 3 The utility model provides a valve fixing device of air separation cold box, including support frame, valve position fixing mechanism and counterweight limiting frame, wherein,
[0030] One end of the support frame is fixed on the outer side wall of the cold box panel 4;
[0031] The valve position fixing mechanism comprises a fixed pulley mechanism 21 arranged at the bottom of the other end of the support frame, a rope body 22 wound on the fixed pulley mechanism 21, a counterweight 23 connected to one end of the rope body 22, and a lifting ring 24 connected to the other end of the rope body 22; the lifting ring 24 is fixed on the valve 5;
[0032] One end of the counterweight limiting frame is fixed on the outer side wall of the cold box panel 4, and the other end of the counterweight limiting frame is provided with a vertical limiting through hole 35 matched with the counterweight 23.
[0033] Through the structural design of the support frame and the valve position fixing mechanism, when the valve 5 is installed, the length of the rope body 22 above the lifting ring 24 is adjusted to make the rope body 22 above the lifting ring 24 bear force, so that the distance between the counterweight 23 and the cold box steel structure platform 6 meets the requirements, that is, the valve 5 can be fixed, the tension of the rope body 22 on the upper part of the valve 5 is converted into the gravity of the counterweight 23 through the fixed pulley mechanism 21, and the verticality of the counterweight 23 is ensured not to deviate through the structural design of the counterweight limiting frame, so that the valve 5 is fixed by the force balance between the gravity of the valve 5 itself and the counterweight 23, and when the valve 5 is cold contracted and deformed, the fixing of the valve 5 will not produce stress; the stable fixing of the valve 5 outside the cold box is ensured, and the utility model has the advantages of safety, practicality, high efficiency and the like.
[0034] As a preferred scheme of the utility model, the support frame comprises a horizontal hanger beam 11 fixed at one end on the outer side wall of the cold box panel 4, an upper inclined support 12 fixed between the upper part of the horizontal hanger beam 11 and the outer side wall of the cold box panel 4, and a lower inclined support 13 fixed between the lower part of the horizontal hanger beam 11 and the outer side wall of the cold box panel 4.
[0035] Specifically, one end of the horizontal hanger beam 11 is preferably but not limited to fixed on the outer side wall of the cold box panel 4 by welding; one end of the upper inclined support 12 is preferably but not limited to fixed on the horizontal hanger beam 11 by welding, and the other end is preferably but not limited to fixed on the outer side wall of the cold box panel 4 by welding; one end of the lower inclined support 13 is preferably but not limited to fixed on the horizontal hanger beam 11 by welding, and the other end is preferably but not limited to fixed on the outer side wall of the cold box panel 4 by welding. By welding the components of the support frame, the overall structure is fixed more firmly on the outer side wall of the cold box panel 4, improving the safety of the device.
[0036] As a preferred scheme of the present application, a reinforcing beam 14 is arranged at the position corresponding to the inner side wall of the cold box panel 4 and the support frame.
[0037] Specifically, the reinforcing beam 14 is preferably but not limited to fixed on the inner side wall of the cold box panel 4 by welding. The reinforcing beam 14 makes the support and fixation of the support frame by the cold box panel 4 more firm and reliable.
[0038] As a preferred scheme of the present application, the fixed pulley mechanism 21 is a pulley block including two fixed pulleys.
[0039] Specifically, the fixed pulley mechanism 21 can be a pulley block including a plurality of arranged fixed pulleys, or a single fixed pulley with a large diameter, as long as it can ensure that the counterweight 23 is vertical, and the present application does not make special limitations thereon.
[0040] As a preferred scheme of the present application, the two ends of the rope body 22 are connected with the lifting ring 24 through the first rope clamp 25 and connected with the connecting hole 231 on the counterweight 23 through the second rope clamp 26.
[0041] Specifically, the rope clamp facilitates the connection between the two ends of the rope body 22 and the lifting ring 24 and the counterweight 23, and the adjustment of the force of the rope body 22 above the lifting ring 24. The rope body 22 is preferably but not limited to a steel wire rope.
[0042] As a preferred scheme of the present application, a lifting ring 24 is arranged on each side of the valve 5; the lifting rings 24 on both sides of the valve 5 are connected with one end of the rope body 22 through the first connecting rope.
[0043] Specifically, through the lifting rings 24 on both sides of the valve 5, the valve 5 can be subjected to more uniform tension of the rope body 22, avoiding displacement of the valve 5 due to uneven force. Of course, a lifting ring 24 can also be arranged at the central position of the top of the valve 5.
[0044] As an optimal scheme of the utility model, the counterweight 23 comprises two counterweight columns 232; the two counterweight columns 232 are connected through a connecting plate 233; a connecting hole 231 is arranged on each counterweight column 232; the connecting holes 231 of the two counterweight columns 232 are connected with the other end of the rope body 22 through a second connecting rope.
[0045] Specifically, the structure design of the counterweight 23 makes the force balance between the lifting ring 24 and the counterweight 23 better, and the position fixing effect on the valve 5 better.
[0046] As an optimal scheme of the utility model, a gap is arranged between the bottom of the counterweight 23 and the top surface of the cold box steel structure platform 6.
[0047] Specifically, the height of the gap is preferably but not limited to 50mm, so that the counterweight 23 has adjustment space.
[0048] As an optimal scheme of the utility model, the top end of the counterweight 23 is higher than the top end of the vertical limiting through hole 35; the bottom end of the counterweight 23 is lower than the bottom end of the vertical limiting through hole 35.
[0049] Specifically, the top end of the counterweight 23 is higher than the top end of the vertical limiting through hole 35 by a preferred distance of 25mm; the bottom end of the counterweight 23 is lower than the bottom end of the vertical limiting through hole 35 by a preferred distance of 25mm, so as to ensure that the counterweight 23 can be adjusted up and down inside the vertical limiting through hole 35, and the counterweight 23 can only move in the vertical direction.
[0050] As an optimal scheme of the utility model, the counterweight limiting frame comprises a first lateral limiting plate 31 and a second lateral limiting plate 32 arranged on the two sides of the counterweight 23 respectively, and a first horizontal limiting plate 33 and a second horizontal limiting plate 34 vertically arranged between the first lateral limiting plate 31 and the second lateral limiting plate 32; the first lateral limiting plate 31, the second lateral limiting plate 32, the first horizontal limiting plate 33 and the second horizontal limiting plate 34 surround a vertical limiting through hole 35; the end portions of the first lateral limiting plate 31 and the second lateral limiting plate 32 are fixedly arranged on the outer side wall of the cold box panel 4.
[0051] Specifically, the end portions of the first lateral limiting plate 31 and the second lateral limiting plate 32 are welded on the outer side wall of the cold box panel 4, and the shape and size of the vertical limiting through hole 35 are determined according to the counterweight 23, which functions to limit the counterweight 23 in the horizontal direction, so that the counterweight 23 can only be adjusted in the vertical direction.
[0052] The valve fixing device of the air separation cold box provided by the utility model uses in turn to install horizontal hanger beam 11, upper inclined support 12, lower inclined support 13, fixed pulley mechanism 21, rope body 22 and rope clamp, one end of rope body 22 is connected and fixed with counterweight 23, after valve 5 is installed, the other end of rope body 22 is connected with lifting ring 24, through adjusting first rope clamp 25, rope body 22 above lifting ring 24 is stressed, and the distance between counterweight 23 and cold box steel structure platform 6 meets the requirement, thereby realizing the fixation of valve 5.
[0053] It can be seen from the above specific embodiment that the valve fixing device of the air separation cold box provided by the utility model, through the structural design of the support frame and the valve position fixing mechanism, when the valve is installed, the length of the rope body above the lifting ring is adjusted, the rope body above the lifting ring is stressed, the distance between the counterweight and the cold box steel structure platform meets the requirement, the fixation of the valve is realized, the tension of the rope body on the upper part of the valve is converted into the gravity of the counterweight through the fixed pulley mechanism, and through the structural design of the counterweight limiting frame, the perpendicularity of the counterweight is ensured not to be deviated, thereby the valve is fixed by the force balance between the gravity of the valve and the counterweight, the air separation device is in the deep cold state operation, when the valve is cold contracted and deformed, the fixation of the valve will not produce stress, the stable fixation of the valve outside the cold box is ensured, the utility model has the advantages of safety, practicality, high efficiency and the like.
[0054] The valve fixing device of the air separation cold box according to the utility model is described above with reference to the drawings in an exemplary manner. However, it should be understood by those skilled in the art that various improvements can be made to the valve fixing device of the air separation cold box according to the utility model described above without departing from the content of the utility model. Therefore, the protection scope of the utility model should be determined by the content of the appended claims.
Claims
1. A valve fixing device of an air separation cold box, characterized by, It comprises a support frame, a valve position fixing mechanism and a counterweight limiting frame, wherein, One end of the support frame is fixed on the outer sidewall of the cold box panel; The valve position fixing mechanism comprises a fixed pulley mechanism arranged at the bottom of the other end of the support frame, a rope arranged around the fixed pulley mechanism, a counterweight connected with one end of the rope and a lifting ring connected with the other end of the rope; the lifting ring is fixed on the valve; One end of the counterweight limiting frame is fixed on the outer sidewall of the cold box panel, and a vertical limiting through hole matched with the counterweight is arranged at the other end of the counterweight limiting frame.
2. The valve fixing device of the air separation cold box according to claim 1, wherein, The support frame comprises a horizontal hanger beam fixed on the outer sidewall of the cold box panel, an upper inclined support fixed between the upper part of the horizontal hanger beam and the outer sidewall of the cold box panel and a lower inclined support fixed between the lower part of the horizontal hanger beam and the outer sidewall of the cold box panel.
3. The valve fixing device of the air separation cold box according to claim 1, wherein, A reinforcing beam is arranged at the position corresponding to the support frame on the inner sidewall of the cold box panel.
4. The valve fixing device of the air separation cold box according to claim 1, wherein, The fixed pulley mechanism is a pulley block comprising two fixed pulleys.
5. The valve fixing device of the air separation cold box according to claim 1, wherein, Two ends of the rope are respectively connected with the lifting ring through a first rope clamp and connected with the connecting hole on the counterweight through a second rope clamp.
6. The valve fixing device of the air separation cold box according to claim 1, wherein, The lifting ring is arranged on both sides of the valve respectively; The lifting rings on both sides of the valve are connected with one end of the rope through a first connecting rope.
7. The valve fixing device of the air separation cold box according to claim 1, wherein, The counterweight comprises two counterweight columns; The two counterweight columns are connected through a connecting plate; A connecting hole is arranged on each of the counterweight columns; The connecting holes of the two counterweight columns are connected with the other end of the rope through a second connecting rope.
8. The valve fixing device of the air separation cold box according to claim 1, wherein, A gap is arranged between the bottom of the counterweight and the top surface of the cold box steel structure platform.
9. The valve fixing device of the air separation cold box according to claim 1, wherein, The top end of the counterweight is higher than the top end of the vertical limiting through hole; The bottom end of the counterweight is lower than the bottom end of the vertical limiting through hole.
10. The valve fixing device of the air separation cold box according to claim 1, wherein, The counterweight limiting frame comprises a first lateral limiting plate and a second lateral limiting plate respectively arranged on two sides of the counterweight, and a first horizontal limiting plate and a second horizontal limiting plate vertically arranged between the first lateral limiting plate and the second lateral limiting plate; the first lateral limiting plate, the second lateral limiting plate, the first horizontal limiting plate and the second horizontal limiting plate form the vertical limiting through hole therebetween; and the end portions of the first lateral limiting plate and the second lateral limiting plate are fixed on the outer side wall of the cold box panel.