Overhaul device for valve pipeline

Abstract

The utility model provides a valve pipeline maintenance device which comprises a cold box plate, a partition box, a valve body, two connecting pipelines, a filling pipeline and an inspection door, the partition box is located on one side of the cold box plate, and the partition box is connected with the cold box plate; the cold box plate is provided with a round opening, a half valve body penetrates through the round opening to be placed in the partition box, and the valve body is connected with the cold box plate and the valve body. Connecting openings are formed in the two corresponding sides of the valve body, and the connecting pipeline communicates with the valve body through the connecting openings. The cold box plate is provided with a first filling port above the valve body, the top of the partition box is provided with a second filling port, and the filling pipeline is communicated with the partition box through the first filling port and the second filling port; and the cold box plate is provided with an inspection opening at the lower part of the valve body. When the valve body of the valve needs to be overhauled, only pearlife in the partition box needs to be discharged, and the pearlife in the whole cold box does not need to be completely patted, so that a large amount of time, manpower and material resources are saved, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a maintenance device, in particular to a valve pipeline maintenance device, belonging to the technical field of valve pipeline maintenance. Background Art

[0002] Liquefied natural gas (LNG) is becoming increasingly important in the energy sector due to its high efficiency and cleanliness. However, once a failure occurs in some key valves in the LNG cold box and the cold box of the air separation equipment, the maintenance work is very complicated and difficult. This is mainly because the cold box is filled with a large amount of pearl sand. The traditional maintenance method requires that the pearl sand be completely removed before entering the cold box for inspection and maintenance.

[0003] Such a maintenance process is not only time-consuming and labor-intensive, but the frequent removal and backfilling of pearlescent sand may also cause unnecessary damage to the internal structure of the cold box. Utility Model Content

[0004] Based on the above background, the purpose of the present invention is to provide a valve pipeline maintenance device that is easy to maintain and simple to operate, so as to solve the problems described in the background technology.

[0005] In order to achieve the above-mentioned utility model purpose, the utility model provides the following technical solutions:

[0006] A valve pipeline inspection device comprises a cold box plate, a partition box, a valve body, two connecting pipes, a filling pipe and an inspection door, wherein the partition box is located on one side of the cold box plate and is connected to the cold box plate;

[0007] The cold box plate is provided with a circular opening, half of the valve body is passed through the circular opening and placed in the compartment, and the valve body is connected to the cold box plate and the valve body;

[0008] The valve body has connecting ports on both sides thereof, and the connecting pipe is connected to the valve body through the connecting ports;

[0009] The cold box plate is provided with a first filling port at the upper part of the valve body, the top of the compartment box is provided with a second filling port, and the filling pipeline is connected with the compartment box through the first filling port and the second filling port;

[0010] The cold box plate is provided with an inspection port at the lower part of the valve body, and the inspection port is provided with an inspection door, and the inspection door has two states of opening and closing relative to the compartment box.

[0011] The cold box plate and the cold box are an integrated structure, and the side of the cold box plate where the compartment is set is located inside the cold box. When the cold box is operating normally, the compartment is filled with pearlescent to keep the structure and operation of the cold box stable.

[0012] When the valve body needs to be inspected, it is only necessary to take out the pearlescent sand in the compartment box. The maintenance personnel can enter and exit the compartment box through the inspection door to perform maintenance operations on the valve body.

[0013] After the overhaul is completed, the pearlescent sand can be refilled back into the compartment through the filling pipe to restore the normal operation of the cold box.

[0014] The compartment is made of several thick stainless steel plates that are bent, cut and assembled together, and the structure between the plates can block the pearlescent sand. The valve body is equipped with an insulation cylinder and filled with slag wool, and is sealed with the cold box plate with a flexible sleeve to ensure the stability of the temperature and pressure inside the cold box.

[0015] The device greatly simplifies the maintenance process of valve pipelines, reduces workload and risk of damage to equipment, and improves overall operational efficiency and safety.

[0016] Preferably, a hollow flange is provided at one end of the filling pipe away from the compartment, the hollow flange is welded to the filling pipe, a blind flange is provided on the hollow flange, and the blind flange is detachably fixedly connected to the hollow flange.

[0017] The hollow flange and the blind flange are detachably fixedly connected, so that the filling pipeline can be opened or closed conveniently.

[0018] Preferably, the inspection door comprises a frame, a sealing ring, a cover plate, a connecting piece and a plurality of handles. The frame is welded to the cold box panel. A cover plate is arranged on the side of the frame away from the inspection port. A sealing ring is arranged between the frame and the cover plate. The frame, the cover plate and the sealing ring are connected by a connecting piece. A plurality of handles are arranged on the side of the cover plate away from the frame, and the handles are connected to the cover plate.

[0019] The synergistic effect between the frame, sealing ring, cover plate, connectors and several handles can ensure the stability, sealing and ease of operation of the inspection door during use, effectively supporting the efficient operation of the device and the smooth progress of maintenance work.

[0020] Preferably, a support frame is provided on the valve body, and the valve body is connected to the cold box plate via the support frame.

[0021] The support frame provides stable support and structural support for the valve body.

[0022] Preferably, both the circular port and the connecting port are provided with valve rings.

[0023] The valve ring ensures the sealing performance between the valve body and the cold box plate and between the connecting pipes.

[0024] Preferably, the compartment box is composed of a plurality of stainless steel plates, and the stainless steel plates are connected by intermittent welding.

[0025] Preferably, the filling pipe consists of a round pipe and a bent pipe, and the round pipe and the bent pipe are welded.

[0026] Preferably, the sealing ring is a neoprene gasket.

[0027] Compared with the prior art, the utility model has the following advantages:

[0028] The utility model provides a valve pipeline maintenance device. When the valve body needs to be repaired, it is only necessary to discharge the pearlescent sand in the compartment box without shooting out all the pearlescent sand in the entire cold box, thereby saving a lot of time, manpower and material resources and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0030] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0031] Figure 2 It is a schematic diagram of the internal structure of the compartment box of the utility model;

[0032] Figure 3 It is a schematic diagram of the position structure of the valve body and the support frame of the utility model;

[0033] Figure 4 It is a front view of the inspection door of the utility model;

[0034] Figure 5 It is a sectional view of the inspection door of the utility model.

[0035] In the figure: 1. cold box plate; 2. partition box; 3. valve body; 4. connecting pipe; 5. filling pipe; 6. inspection door; 601. frame; 602. sealing ring; 603. cover plate; 604. connecting piece; 605. handle; 7. round mouth; 8. connecting port; 9. first filling port; 10. second filling port; 11. inspection port; 12. hollow flange; 13. blind flange; 14. support frame. DETAILED DESCRIPTION

[0036] The technical solution of the utility model is further described in detail below through specific embodiments and in combination with the accompanying drawings. It should be understood that the implementation of the utility model is not limited to the following embodiments, and any form of modification and / or change made to the utility model will fall within the protection scope of the utility model.

[0037] In the present invention, unless otherwise specified, all parts and percentages are weight units, and the equipment and raw materials used can be purchased from the market or are commonly used in the field. The methods in the following embodiments, unless otherwise specified, are conventional methods in the field. The components or equipment in the following embodiments, unless otherwise specified, are universal standard parts or components known to those skilled in the art, and their structures and principles are known to those skilled in the art through technical manuals or conventional experimental methods.

[0038] The following is a detailed description of the embodiments of the present invention in conjunction with the accompanying drawings. In the following detailed description, for ease of explanation, many specific details are described to provide a comprehensive understanding of the embodiments of the present invention. However, one or more embodiments may also be implemented by those skilled in the art without these specific details.

[0039] like Figure 1 and Figure 2 As shown, a valve pipeline maintenance device includes a cold box plate 1, a partition box 2, a valve body 3, two connecting pipes 4, a filling pipe 5 and an inspection door 6. The partition box 2 is located on one side of the cold box plate 1, and the partition box 2 is connected to the cold box plate 1.

[0040] like Figure 3 As shown, the cold box plate 1 is provided with a circular opening 7, half of the valve body 3 is placed in the compartment 2 through the circular opening 7, and the valve body 3 is connected to the cold box plate 1 and the valve body 3. The valve body 3 is provided with a support frame 14, and the valve body 3 is connected to the cold box plate 1 through the support frame 14. The support frame 14 provides a stable support and structural support for the valve body 3.

[0041] Connecting ports 8 are provided on corresponding sides of the valve body 3 , and the connecting pipe 4 is connected to the valve body 3 through the connecting ports 8 .

[0042] The circular opening 7 and the connecting opening 8 are both provided with valve rings, which can ensure the sealing performance between the valve body 3 and the cold box plate 1 and between the connecting pipes 4.

[0043] The cold box plate 1 is located at the upper part of the valve body 3 and has a first filling port 9, a second filling port 10 is opened on the top of the compartment 2, and the filling pipe 5 is connected to the compartment 2 through the first filling port 9 and the second filling port 10. The filling pipe 5 is composed of a round pipe and a bent pipe, and the round pipe and the bent pipe are welded.

[0044] The cold box plate 1 and the cold box are an integrated structure, and the side of the cold box plate 1 where the compartment box 2 is arranged is located inside the cold box. When the cold box is operating normally, the compartment box 2 is filled with pearlescent light to keep the structure and operation of the cold box stable.

[0045] The cold box plate 1 is provided with an inspection port 11 at the lower part of the valve body 3 , and the inspection port 11 is provided with an inspection door 6 . The inspection door 6 has two states relative to the compartment 2 : open and closed.

[0046] When the valve body 3 needs to be inspected, the pearlescent sand in the compartment box 2 only needs to be taken out, and the maintenance personnel can enter and exit the compartment box 2 through the inspection door 6 to perform maintenance operations on the valve body 3.

[0047] like Figure 4 and Figure 5 As shown, the inspection door 6 includes a frame 601, a sealing ring 602, a cover plate 603, a connector 604 and several handles 605. The sealing ring 602 is a neoprene gasket. The frame 601 is welded to the cold box panel. The cover plate 603 is arranged on the side of the frame 601 away from the inspection port 11. The sealing ring 602 is arranged between the frame 601 and the cover plate 603. The frame 601, the cover plate 603 and the sealing ring 602 are connected by a connector 604. The cover plate 603 is arranged on the side away from the frame 601. Several handles 605 are connected to the cover plate 603.

[0048] The frame 601, the sealing ring 602, the cover plate 603, the connector 604 and the handles 605 work together to ensure the stability, sealing and ease of operation of the inspection door 6 during use, effectively supporting the efficient operation of the device and the smooth progress of maintenance work.

[0049] After the overhaul is completed, the pearl sand can be refilled back into the compartment 2 through the filling pipe 5 to restore the normal operation of the cold box.

[0050] A hollow flange 12 is provided at one end of the filling pipe 5 away from the compartment 2, the hollow flange 12 is welded to the filling pipe 5, a blind flange 13 is provided on the hollow flange 12, and the blind flange 13 is detachably fixedly connected to the hollow flange 12. The hollow flange 12 is detachably fixedly connected to the blind flange 13, so that the filling pipe 5 can be opened or closed conveniently.

[0051] The compartment 2 is made of several thick stainless steel plates which are bent, cut and connected by intermittent welding, and the structure between the plates can block the pearlescent sand. The valve body 3 is equipped with an insulation cylinder and filled with slag wool, and is sealed with the cold box plate 1 by a flexible sleeve to ensure the stability of the temperature and pressure inside the cold box.

[0052] The device greatly simplifies the maintenance process of valve pipelines, reduces workload and risk of damage to equipment, and improves overall operational efficiency and safety.

[0053] The implementation principle of the valve pipeline maintenance device of the utility model is:

[0054] The cold box plate 1 and the cold box are an integrated structure, and the side of the cold box plate 1 where the compartment box 2 is arranged is located inside the cold box. When the cold box is operating normally, the compartment box 2 is filled with pearlescent light to keep the structure and operation of the cold box stable.

[0055] When the valve body 3 needs to be inspected, the pearlescent sand in the compartment box 2 only needs to be taken out, and the maintenance personnel can enter and exit the compartment box 2 through the inspection door 6 to perform maintenance operations on the valve body 3.

[0056] After the overhaul is completed, the pearl sand can be refilled back into the compartment 2 through the filling pipe 5 to restore the normal operation of the cold box.

[0057] The compartment 2 is made of several thick stainless steel plates which are bent, cut and assembled together, and the structure between the plates can block the pearlescent sand. The valve body 3 is equipped with an insulation cylinder and filled with slag wool, and is sealed with the cold box plate 1 by a flexible sleeve to ensure the stability of the temperature and pressure inside the cold box.

[0058] The device greatly simplifies the maintenance process of valve pipelines, reduces workload and risk of damage to equipment, and improves overall operational efficiency and safety.

[0059] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A valve pipeline maintenance device, characterized in that: The valve pipeline inspection device comprises a cold box plate (1), a partition box (2), a valve body (3), two connecting pipes (4), a filling pipe (5) and an inspection door (6), wherein the partition box (2) is located on one side of the cold box plate (1), and the partition box (2) is connected to the cold box plate (1); The cold box plate (1) is provided with a circular opening (7), half of the valve body (3) passes through the circular opening (7) and is placed in the compartment (2), and the valve body (3) is connected to the cold box plate (1) and the valve body (3); The valve body (3) is provided with connecting ports (8) on both corresponding sides, and the connecting pipe (4) is connected to the valve body (3) through the connecting ports (8); The cold box plate (1) is provided with a first filling port (9) located on the upper part of the valve body (3), the top of the compartment box (2) is provided with a second filling port (10), and the filling pipe (5) is connected to the compartment box (2) through the first filling port (9) and the second filling port (10); The cold box plate (1) is provided with an inspection port (11) at the lower part of the valve body (3), and the inspection port (11) is provided with an inspection door (6). The inspection door (6) has two states of being open and closed relative to the compartment (2).

2. The valve pipeline maintenance device according to claim 1 is characterized in that: A hollow flange (12) is arranged at one end of the filling pipe (5) away from the compartment box (2), the hollow flange (12) is welded to the filling pipe (5), a blind flange (13) is arranged on the hollow flange (12), and the blind flange (13) is detachably fixedly connected to the hollow flange (12).

3. The valve pipeline maintenance device according to claim 1 is characterized in that: The inspection door (6) comprises a frame (601), a sealing ring (602), a cover plate (603), a connecting piece (604) and a plurality of handles (605); the frame (601) is welded to a cold box panel; a cover plate (603) is arranged on a side of the frame (601) away from the inspection port (11); a sealing ring (602) is arranged between the frame (601) and the cover plate (603); the frame (601), the cover plate (603) and the sealing ring (602) are connected via a connecting piece (604); a plurality of handles (605) are arranged on a side of the cover plate (603) away from the frame (601); and the handles (605) are connected to the cover plate (603).

4. The valve pipeline maintenance device according to claim 1 is characterized in that: The valve body (3) is provided with a support frame (14), and the valve body (3) is connected to the cold box plate (1) via the support frame (14).

5. The valve pipeline maintenance device according to claim 1 is characterized in that: The circular opening (7) and the connecting opening (8) are both provided with valve rings.

6. The valve pipeline maintenance device according to claim 2 is characterized in that: The compartment box (2) is composed of a plurality of stainless steel plates, and the stainless steel plates are connected by intermittent welding.

7. The valve pipeline maintenance device according to claim 2 is characterized in that: The filling pipe (5) is composed of a round pipe and a bent pipe, and the round pipe and the bent pipe are welded.

8. The valve pipeline maintenance device according to claim 3 is characterized in that: The sealing ring (602) is a neoprene gasket.

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