Isolation blind plate for inspection and maintenance of oil and gas device and blind plate suite

Abstract

The utility model belongs to the technical field of petroleum chemical industry device inspection and maintenance operation matching tools, and discloses an oil gas device inspection and maintenance isolation blind plate and a blind plate suite, which comprise a blind plate body, a sealing gasket is sleeved on the outer side of the blind plate body, a handle is arranged on the sealing gasket, and the handle is vertical to the surface of the sealing gasket; the handle is provided with a mark; the blind plate body has various different models, and the mark records the pressure bearing information of the blind plate body and the nominal diameter information of the corresponding pipeline. According to the utility model, the handle is connected with the sealing gasket, the sealing gasket is sleeved outside the blind plate body, and a mark is arranged on the handle, so that different isolation blind plates can be prepared according to different pipe diameters, and can be conveniently and quickly taken and used.

Description

Technical Field

[0001] The utility model belongs to the technical field of supporting tools for inspection and maintenance operations of devices in the petrochemical industry, and particularly relates to an isolation blind plate and a blind plate kit for inspection and maintenance of oil and gas devices. Background Art

[0002] During the production and operation of petroleum and petrochemical enterprises, equipment often needs to be repaired and constructed. At present, the repair and construction of the equipment in use generally adopts double throttle stop valve control or installs eight-shaped blind plates at the flange connection of the process pipeline for energy isolation. However, the use of standard blind plates has great limitations due to weight, thickness and ease of operation. If standard blind plates are used, due to their thickness, the isolation blind plates cannot be installed at most points where isolation of process pipelines is required. Oil and gas production sites need energy isolation blind plates that are highly versatile and easy to operate.

[0003] Chinese patent publication number CN211853173U, titled "Blind Plate," discloses a blind plate for connecting to a flange on a pipe body to seal the pipe opening. The blind plate comprises: a plate body having a first end face and a second end face disposed opposite each other; a first insulating layer connected to the first end face; and a second insulating layer connected to the second end face. The blind plate also comprises: a handle connected to the plate body so as to position the plate body at a predetermined position for sealing the pipe opening. Although the patent includes a handle, the handle is directly connected to the plate body, making it difficult to install a sealing gasket and inconvenient to access and install. Utility Model Content

[0004] The purpose of the utility model is to provide an isolation blind plate and a blind plate kit for inspection and maintenance of oil and gas equipment. By connecting the handle with the sealing gasket, and sleeve the sealing gasket on the outside of the blind plate, and setting a mark on the handle, different isolation blind plates can be prepared for different types of pipe diameters, which can be easily and quickly taken out.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] In the first aspect, the utility model provides an isolation blind plate for inspection and maintenance of oil and gas equipment, comprising: a blind plate body, a sealing gasket is provided on the outer side of the blind plate body, a handle is installed on the sealing gasket, and the handle is perpendicular to the surface of the sealing gasket; the handle has a mark; the blind plate body has a variety of different models, and the mark records the pressure-bearing capacity of the blind plate body and the corresponding pipeline nominal diameter information.

[0007] Optionally, the handle is connected to the sealing gasket via threads.

[0008] Optionally, the sealing gasket is an octagonal gasket.

[0009] Optionally, the handle is welded to the sealing gasket.

[0010] Optionally, the mark is a blind plate number marking plate, and the blind plate number marking plate is installed on the handle.

[0011] Optionally, a mounting hole is provided on the handle, and the blind plate number mark is installed on the mounting hole.

[0012] Optionally, the handle is a long plate, and the plate surface of the handle is parallel to the blind plate body.

[0013] Optionally, the blind plate body is made of stainless steel.

[0014] Optionally, the thickness of the blind plate body is greater than or equal to the thickness of the sealing gasket.

[0015] In a second aspect, the utility model provides a blind plate kit of different models, including a plurality of different models of the aforementioned oil and gas device inspection and maintenance isolation blind plates.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The utility model is an isolation blind plate and blind plate kit for inspection and maintenance of oil and gas equipment. By arranging a sealing gasket on the outer surface of the blind plate body, the versatility and airtightness of the utility model can be ensured. By connecting a handle to the outside of the sealing gasket and marking the pressure-bearing capacity of the blind plate body and the corresponding pipe nominal diameter information on the handle, different types of blind plate bodies can be equipped for different pipe diameters, design pressures and pressure grades, which can be easily accessed. By marking, the standard use of the blind plate body can be standardized, providing a lightweight, versatile and easy-to-operate energy isolation blind plate for inspection and maintenance operations of oil and gas production equipment. The utility model can improve safety during construction operations and reduce the impact of production equipment inspection and maintenance on oil and gas production by equipping a large number of isolation blind plates of different models according to different needs.

[0018] Furthermore, the handle of the utility model is perpendicular to the surface of the sealing gasket, so that the handle can be used to conveniently control and take the sealing gasket when it is used.

[0019] Furthermore, the handle of the present invention is connected to the sealing gasket via threads, so the handle can be easily disassembled.

[0020] Furthermore, the present invention marks the information of the blind plate through the blind plate number marking plate, which can prevent the information from being contaminated due to wear. The handle is a long strip, which can facilitate the installation of the blind plate number marking plate.

[0021] Furthermore, the blind plate body of the utility model is made of stainless steel and can be used in a humid environment, thereby extending the service life of the blind plate body. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are for illustrative purposes only and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the components in the drawings are merely schematic and are used to help understand the present invention, and are not intended to specifically limit the shapes and proportional dimensions of the components of the present invention. In the drawings:

[0023] Figure 1 This is the main view of the isolation blind plate for oil and gas device inspection and maintenance according to the utility model;

[0024] Figure 2 This is a side view of the utility model's oil and gas device inspection and maintenance isolation blind plate;

[0025] Figure 3 This is a bottom view of the isolation blind plate for oil and gas device inspection and maintenance according to the utility model;

[0026] Among them, 1. Blind plate body; 2. Sealing gasket; 3. Handle; 4. Blind plate number mark; 5. Mounting hole. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the following will be combined with the drawings of the embodiments of the present invention to clearly and completely describe the technical solutions of the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0028] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be an element centered thereon. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an element centered thereon. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are for the purpose of describing specific embodiments only and are not intended to limit this invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] The present invention will be described in detail below with reference to the accompanying drawings.

[0031] like Figure 1 As shown, the utility model is an isolation blind plate for inspection and maintenance of oil and gas equipment, comprising: a blind plate body 1, a sealing gasket 2 is provided on the outer side of the blind plate body 1, a handle 3 is installed on the sealing gasket 2, and the handle 3 is perpendicular to the surface of the sealing gasket 2; the handle 3 has a mark; the blind plate body 1 has a variety of different models, and the mark records the pressure bearing capacity of the blind plate body 1 and the corresponding pipeline nominal diameter information.

[0032] The utility model provides an oil and gas device inspection and maintenance isolation blind plate that can be configured with specifications according to actual use requirements. After determining the position where the blind plate isolation is required, the specification and model of the sealing gasket 2 are first selected according to the pressure of the pipeline medium, the pipeline pressure grade and the pipe diameter.

[0033] After the specifications and models of the sealing gasket 2 are selected, the blind plate body 1 can be processed using materials of corresponding pressure-bearing grades, and the blind plate body 1 and the sealing gasket 2 can be connected together.

[0034] An installation handle 3 for easy installation and disassembly is welded to the outer side of the circumferential wall of the sealing gasket 2; the installation handle 3 is provided with an installation hole 5 for installing a blind plate number mark, which is used to install a blind plate number mark plate 4.

[0035] Example 1

[0036] The oil and gas device inspection and maintenance isolation blind plate of this embodiment includes a blind plate body 1.

[0037] The blind plate body 1 is a flange cover, which is a flange without a hole in the middle for closing the pipe opening, and can play the role of isolation and cutting. Specifically, the blind plate body 1 is made of stainless steel and can be used in a humid environment, extending the service life of the blind plate body 1.

[0038] A sealing gasket 2 is sleeved on the outer side of the blind plate body 1 .

[0039] Specifically, the sealing gasket 2 is an octagonal gasket, a seal designed for high-temperature and high-pressure environments. It exhibits excellent radial self-tightening sealing properties and is suitable for sealing high-temperature, high-pressure pipeline flanges. It forms a seal by contacting the flange's groove. When the octagonal gasket is installed between connecting components, the applied pressure causes the gasket to plastically deform at its octagonal edge, forming an annular sealing band. As pressure increases, the pressure exerted by the medium flow causes the gasket to expand radially, tightening the gasket against the inclined surface of the flange's groove, creating a self-tightening effect.

[0040] Furthermore, the thickness of the blind plate body 1 is determined by the thickness of the sealing gasket 2. Specifically, the thickness of the blind plate body 1 is greater than or equal to the thickness of the sealing gasket 2.

[0041] The sealing gasket 2 includes an outer annular surface and an inner annular surface. A handle 3 is installed on the outer annular surface of the sealing gasket 2. The handle 3 is perpendicular to the surface of the sealing gasket 2. The sealing gasket 2 can be easily extracted and moved through the handle 3.

[0042] Optionally, the handle 3 is welded to the gasket 2. Optionally, the handle 3 and the gasket 2 are threadedly connected, with the handle 3 having threads on its end and screw holes formed on the outer annular surface of the gasket 2. Welding the gasket 2 and handle 3 ensures a secure connection and convenient access. Threading the gasket 2 and handle 3 allows for easy replacement if damaged.

[0043] The handle 3 has a marking, specifically, a blind plate number sign 4, which is mounted on the handle 3. Specifically, the handle 3 is provided with a mounting hole 5, and the blind plate number sign 4 is mounted on the mounting hole 5. The blind plate number sign 4 is mounted on the handle 3 through the mounting hole 5, with the side with the information facing upward.

[0044] The blind plate body 1 has a variety of different models, and the mark records the pressure-bearing capacity of the blind plate body 1 and the corresponding pipe nominal diameter information.

[0045] Furthermore, the handle 3 is a long plate, with its surface parallel to the blind plate body 1. By using a long plate, the handle 3 facilitates the installation of the blind plate number marker 4. Optionally, the blind plate number marker 4 is a metal plate, and the pressure bearing capacity of the blind plate body 1 and the corresponding pipe nominal diameter are engraved on the blind plate number marker 4. Furthermore, the pressure bearing capacity of the blind plate body 1 and the corresponding pipe nominal diameter are engraved on both the front and back of the blind plate number marker 4.

[0046] The oil and gas device inspection and maintenance isolation blind plate of this embodiment, when used, includes the following steps:

[0047] Step 1: Remove all bolts of the flange connection that needs to be isolated with a blind plate.

[0048] Step 2: Holding the mounting handle 3 of the present invention that has been processed according to the corresponding model, place the blind plate body 1 between the flanges from top to bottom.

[0049] Step 3: After alignment, use flange bolts to tighten diagonally to fix the blind plate body 1 between the flanges.

[0050] During the maintenance of oil and gas production equipment, if industrial hot work, pipeline opening work, or entering a confined space is involved, the utility model can be used to effectively isolate the energy of the process pipeline, etc., to ensure that the medium cannot flow to the isolated equipment and pipelines, thereby ensuring the safety of the operators.

[0051] Example 2

[0052] The blind plate kit of different models in this embodiment includes multiple models of the aforementioned oil and gas equipment inspection and maintenance isolation blind plates. The details are shown in Table 1 below, where DN (Nominal Diameter) represents the corresponding nominal pipe diameter in millimeters. The model number, corresponding nominal pipe diameter, and pressure capacity in Table 1 are marked on the blind plate number label 4 corresponding to the different blind plate models 1.

[0053] The utility model provides an oil and gas device inspection and maintenance isolation blind plate with a simple structure, which is convenient for batch production of different models. By prefabricating different models of oil and gas device inspection and maintenance isolation blind plates in advance, quick removal and quick maintenance can be achieved.

[0054] Table 1

[0055] model 1 2 3 4 5 6 7 8 Corresponding pipe nominal diameter DN20 DN25 DN25 DN40 DN40 DN40 DN50 DN50 Pressure bearing capacity 4MPa 1.6MPa 4MPa 4MPa 25MPa 16MPa 4MPa 26MPa model 9 10 11 12 13 14 15 Corresponding pipe nominal diameter DN50 DN80 DN80 DN100 DN100 DN150 DN150 Pressure bearing capacity 16MPa 16MPa 25MPa 26MPa 16MPa 26MPa 16MPa

[0056] Example 3

[0057] In this embodiment, when the equipment in the oil and gas production management area is shut down for maintenance, it is necessary to open the tank for maintenance of a metering separator at a gas gathering station, and the entire metering separator needs to be isolated. Since the need to install a blind plate was not considered at the beginning of the design of the separator, the pipelines are directly connected by flanges, and no position for installing a blind plate is reserved. Therefore, it is necessary to use the oil and gas equipment maintenance and isolation blind plate of the utility model.

[0058] Specifically, the flanges for the liquid phase outlet of the metering separator at a gas gathering station correspond to a nominal pipeline diameter of DN40 and a pressure tolerance of 26 MPa; the flanges for the gas phase bypass valve in front of the metering separator at a gas gathering station correspond to a nominal pipeline diameter of DN80 and a pressure tolerance of 26 MPa; and the flanges for the gas phase flowmeter in front of the metering separator at a gas gathering station correspond to a nominal pipeline diameter of DN80 and a pressure tolerance of 26 MPa. The use of the isolation blind plate for oil and gas equipment inspection and maintenance of the present utility model enables rapid maintenance of the aforementioned three flanges.

[0059] Unless otherwise specified, the device components involved in the above embodiments are all conventional device components, and the structural settings, working modes or control modes involved are all conventional settings, working modes or control modes in the art unless otherwise specified.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Other modifications or equivalent substitutions made to the technical solution of the utility model by ordinary technicians in this field should be included in the scope of the claims of the utility model as long as they do not depart from the spirit and scope of the technical solution of the utility model.

Claims

1. An isolation blind plate for oil and gas equipment inspection and maintenance, characterized in that: include: A blind plate body (1) is provided with a sealing gasket (2) on the outer side of the blind plate body (1), a handle (3) is mounted on the sealing gasket (2), and the handle (3) is perpendicular to the surface of the sealing gasket (2); the handle (3) has a mark; the blind plate body (1) has a plurality of different models, and the mark records the pressure bearing capacity of the blind plate body (1) and the corresponding pipe nominal diameter information.

2. The oil and gas equipment inspection and maintenance isolation blind plate according to claim 1 is characterized in that: The handle (3) is connected to the sealing gasket (2) via threads.

3. The oil and gas equipment inspection and maintenance isolation blind plate according to claim 1 is characterized in that: The sealing gasket (2) is an octagonal gasket.

4. The oil and gas equipment inspection and maintenance isolation blind plate according to claim 1 is characterized in that: The handle (3) is welded to the sealing gasket (2).

5. The oil and gas equipment inspection and maintenance isolation blind plate according to claim 1 is characterized in that: The mark is a blind plate number mark plate (4), and the blind plate number mark plate (4) is mounted on the handle (3).

6. The oil and gas equipment inspection and maintenance isolation blind plate according to claim 5, characterized in that: The handle (3) is provided with a mounting hole (5), and the blind plate number marking plate (4) is mounted on the mounting hole (5).

7. The oil and gas equipment inspection and maintenance isolation blind plate according to claim 1 is characterized in that: The handle (3) is a long plate, and the plate surface of the handle (3) is parallel to the blind plate body (1).

8. The oil and gas equipment inspection and maintenance isolation blind plate according to claim 1 is characterized in that: The blind plate body (1) is made of stainless steel.

9. The oil and gas equipment inspection and maintenance isolation blind plate according to claim 1, characterized in that: The thickness of the blind plate body (1) is greater than or equal to the thickness of the sealing gasket (2).

10. A blind plate kit of different models, characterized in that: The invention relates to an oil and gas device inspection and maintenance isolation blind plate as claimed in any one of claims 1 to 9, comprising a plurality of different models.

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