Protective sleeve structure of low-temperature floating valve in air separation cold box

Abstract

The utility model relates to a protective sleeve structure of a low-temperature floating valve in an air separation cold box, which comprises a hose clamp, a canvas sleeve, a valve body baffle plate, a screw, a cold box sleeve and a spring, the valve body baffle plate is arranged on a valve body on one side in the cold box, the cold box sleeve is arranged on a cold box panel, the spring is arranged between the cold box sleeve and the valve baffle plate as a keel, and the bolt is arranged on the bolt. The valve body baffle and the cold box sleeve are connected, a canvas sleeve wraps the spring, the two ends of the canvas sleeve are located on the valve baffle and the cold box sleeve and fixed through hose clamps, and therefore the pearlife heat preservation material in the cold box is isolated from the valve body maintenance portion, and a cavity for valve maintenance is formed. And the floating displacement of the low-temperature valve is compensated through spring deformation. The device has the advantages of simple and reasonable structure, low cost, strong practicability, stable operation and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of cold box structures, in particular to a protective sleeve structure of a low-temperature floating valve in an air separation cold box. Background Art

[0002] The rapid development of my country's coal chemical, petrochemical, metallurgical, pharmaceutical, and electronic gas industries has driven the rapid growth of the air separation industry. Cryogenic valves, as crucial process equipment within air separation cold boxes, play a vital role in cryogenic distillation control and are a key component of air separation units. Providing adequate shrinkage capacity and maintenance clearance for cryogenic valves during low-temperature contraction is crucial for their safe and reliable operation. To address this issue, a protective sleeve structure for cryogenic floating valves within air separation cold boxes was designed. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and to provide a protective sleeve structure for a low-temperature floating valve in an air separation cold box which has a simple and reasonable structure, low cost, strong practicality and stable operation.

[0004] The utility model is realized through the following technical scheme: a protective sleeve structure of a low-temperature floating valve in an air separation cold box, which consists of a throat clamp, a canvas sleeve, a valve body baffle, screws, a cold box sleeve and a spring, the valve body baffle is installed on the valve body on one side of the cold box, the cold box sleeve is installed on the cold box panel, a spring is arranged between the cold box sleeve and the valve baffle as a keel to connect the valve body baffle and the cold box sleeve, and a canvas sleeve is wrapped around the spring, and both ends of the canvas sleeve are located on the valve baffle and the cold box sleeve and are fixed with throat clamps, thereby isolating the pearl sand insulation material in the cold box from the valve body maintenance part to form a cavity for valve maintenance; the floating displacement of the low-temperature valve is compensated by the deformation of the spring.

[0005] Preferably, the two ends of the spring are fixed to the cold box sleeve and the valve body baffle by welding, and the welding position is located on the inner side of the cold box sleeve and the valve body baffle, which can play the role of keel support and compensate for the floating contraction or stretching displacement of the valve in all directions.

[0006] Preferably, the valve body baffle is fixed to the valve body by screws.

[0007] The beneficial effects of the utility model are as follows:

[0008] The protective sleeve structure of the low-temperature floating valve in the air separation cold box designed by the utility model has simple overall materials, convenient installation, low cost, strong practicality, stable and reliable operation, and provides strong support for the long-term and safe operation of the low-temperature valve of the air separation equipment, thereby saving maintenance and repair costs and maximizing the economic benefits of users. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural diagram of the present utility model. DETAILED DESCRIPTION

[0010] In order to enable those skilled in the art to more clearly understand the purpose, technical solutions and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments.

[0011] In the description of the present invention, it should be understood that the orientations or positional relationships indicated by terms such as "upper", "lower", "left", "right", "inside", "outside", "horizontal", and "vertical" are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or original referred to must have a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0012] The present invention will be described in detail below with reference to the accompanying drawings: Figure 1 As shown, a protective sleeve structure of a low-temperature floating valve in an air separation cold box is composed of a throat clamp 1, a canvas sleeve 2, a valve body baffle 3, a screw 4, a spring 5 and a cold box sleeve 6. The valve body baffle 3 is installed on the valve body on one side of the cold box, and the cold box sleeve 6 is installed on the cold box panel. A spring 5 is arranged between the cold box sleeve 6 and the valve baffle 3 as a keel to connect the valve body baffle 3 and the cold box sleeve 6, and a canvas sleeve 2 is wrapped around the spring 5. Both ends of the canvas sleeve 2 are located on the valve baffle 3 and the cold box sleeve 6 and are fixed with throat clamps 1, thereby isolating the pearl sand insulation material in the cold box from the valve body maintenance area, forming a cavity for valve maintenance; the floating displacement of the low-temperature valve is compensated by the deformation of the spring 5.

[0013] The canvas cover provided in the utility model can play a good protective role on the spring and the internal structure, thereby greatly improving the overall service life.

[0014] The ends of the spring 5 are welded to the cold box sleeve 6 and the valve body baffle 3. These welds are located inside the cold box sleeve 6 and the valve body baffle 3, providing support and compensating for the valve's displacement due to floating contraction or expansion in all directions. The valve body baffle 3 is secured to the valve body with screws 4.

[0015] The valve body baffle of the utility model is fixed to the valve body by means of screw installation, so that the overall installation is stable and easy to disassemble, which is convenient for subsequent maintenance and replacement.

[0016] The protective sleeve structure of the low-temperature floating valve in the air separation cold box designed by the utility model has simple overall materials, convenient installation, low cost, strong practicality, stable and reliable operation, and provides strong support for the long-term and safe operation of the low-temperature valve of the air separation equipment, thereby saving maintenance and repair costs and maximizing the economic benefits of users.

[0017] The specific embodiments described herein are merely illustrative of the principles and effects of this utility model and are not intended to limit this utility model. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, any equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical concepts disclosed in this utility model shall be covered by the claims of this utility model.

Claims

1. A protective sleeve structure for a low-temperature floating valve in an air separation cold box, comprising a throat clamp, a canvas sleeve, a valve body baffle, screws, a cold box sleeve, and a spring, characterized in that: The valve body baffle is installed on the valve body on one side of the cold box, and the cold box sleeve is installed on the cold box panel. A spring is arranged between the cold box sleeve and the valve baffle as a keel to connect the valve body baffle and the cold box sleeve, and a canvas cover is wrapped around the spring. Both ends of the canvas cover are located on the valve baffle and the cold box sleeve and are fixed with throat clamps, thereby isolating the pearl sand insulation material in the cold box from the valve body maintenance part, forming a cavity for valve maintenance; the floating displacement of the low-temperature valve is compensated by the deformation of the spring.

2. The protective sleeve structure of the low-temperature floating valve in the air separation cold box according to claim 1 is characterized in that: The two ends of the spring are fixed to the cold box sleeve and the valve body baffle by welding respectively. The welding position is located on the inner side of the cold box sleeve and the valve body baffle, which can play the role of keel support and compensate for the floating contraction or stretching displacement of the valve in all directions.

3. The protective sleeve structure of the low-temperature floating valve in the air separation cold box according to claim 1 is characterized in that: The valve body baffle is fixed on the valve body by screws.

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