Plug-in blind plate structure
By designing the insertion blind plate structure and using the gas guide part to replace nitrogen, the problem of the existing blind plate being unable to determine the internal leakage of materials before dismantling, and safe blind plate removal and material removal are achieved.
Patent Information
- Application Number
- CN202420810654.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-18
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-04-18
AI Technical Summary
The existing blind plate cannot be judged whether there is any internal leakage before dismantling, which may cause material splashing and flashing, causing personal injury and equipment damage.
An insert blind plate structure is designed, including a blind plate body and a gas guide part, nitrogen replacement is performed through the intake pipe and exhaust pipe to remove material and combustible gas between the blind plate and the material side valve.
Before removing the blind plate, you can determine whether there is any internal leakage material, and remove the material and combustible gas by displacing nitrogen to avoid splashing and flashing of materials, improving operational safety.
Smart Images
Figure CN222687646U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of chemical pipeline engineering, in particular to an inserted blind plate structure. Background Art
[0002] The components added to chemical pipelines or equipment to isolate the series connection or leakage of materials are called blind plates. In chemical production, due to the service life or quality problems of the valve, it is impossible to guarantee that there will be no internal leakage after the valve is closed, so blind plates are added behind the isolation valves of some pipelines. Blind plates are used for maintenance, pressure testing, and prevention of material cross-connection between systems, so as to completely isolate and use materials. For example, when the device is being repaired, blind plates should be added to the raw material pipeline, product, and hazardous medium pipeline to prevent leakage and danger. For some parallel-operated equipment, if one of them fails, it needs to be switched out for maintenance. Usually, blind plates are added to the front and rear valves to completely isolate them from other running equipment to ensure safety during maintenance.
[0003] After the chemical pipeline is welded and installed, when the pipeline is subjected to water or air pressure test, a blind plate is installed at the flange of the pipeline to isolate non-pressurized pipelines, equipment, instruments, etc. to ensure the welding quality of the pipeline. After the device is put into production, it is necessary to inspect and repair some pipelines or valves and instruments on the pipeline. Due to production needs, the entire device cannot be stopped and replaced for local inspection and maintenance. It is necessary to close the valve and install a blind plate on the side of the valve close to the maintenance pipeline. The blind plate can effectively isolate the running end material, and then discharge, replace, and repair the maintenance section. After the maintenance is completed, remove the blind plate and replace the pipeline for use.
[0004] Disadvantages of existing technology:
[0005] (1) Before removing the conventional blind plate, it is impossible to determine whether there is material leaking between the blind plate and the valve on the isolation material side;
[0006] (2) When removing the conventional blind plate on the material pipeline, if there is a small amount of material between the material section and the blind plate, the material may splash onto the operator, causing personal injury;
[0007] (3) When removing or extracting conventional blind plates on flammable medium pipelines, if the valve has internal leakage or is misoperated, flash fire and explosion are very likely to occur. Utility Model Content
[0008] In view of this, an embodiment of the utility model provides an insertable blind plate structure, the main purpose of which is to detect whether there is internal leakage in the valve on the material side when the pipeline is reset and the blind plate is removed to avoid danger.
[0009] In order to achieve the above purpose, the utility model mainly provides the following technical solutions:
[0010] The embodiment of the utility model provides an inserted blind plate structure, which comprises: a blind plate body and an air guide portion;
[0011] A groove is provided in the middle of one side of the blind plate body;
[0012] The air guide portion includes an air intake pipe and an exhaust pipe, wherein the air intake pipe and the exhaust pipe are respectively radially connected to the groove from the outer edge of the blind plate body, the air intake pipe is equipped with an air intake valve, and the exhaust pipe is equipped with an exhaust valve.
[0013] The purpose of the utility model and the solution to its technical problems can be further achieved by adopting the following technical measures.
[0014] Optionally, opposite sides of the blind plate body are respectively provided with a plurality of circles of concentric annular protrusions.
[0015] Optionally, it also includes a lifting handle, one end of which is fixedly connected to the outer edge of the blind plate body, and the other end is provided with a hanging hole.
[0016] Optionally, the air inlet pipe and the exhaust pipe are respectively located on opposite sides of the outer edge of the blind plate body.
[0017] Optionally, a first semicircular groove and a second semicircular groove are provided on the bottom surface of the groove, one end of the first semicircular groove is axially connected to the intake pipe, and one end of the second semicircular groove is axially connected to the exhaust pipe.
[0018] Optionally, the other end of the first semicircular groove is provided with a first inclined surface, and the other end of the second semicircular groove is provided with a second inclined surface.
[0019] By means of the above technical solution, the utility model has at least the following advantages:
[0020] When conducting local maintenance on the production unit, close the valve, inspect the maintenance pipeline for discharge, replacement, and sampling, and install a blind plate body on the valve side close to the maintenance pipeline, with one side (groove) of the blind plate body facing the material side valve, and install a sealing gasket between one side of the blind plate body and the flange surface of the material side valve, place the exhaust pipe at the lower edge of the blind plate body, and tighten the flange surface with bolts so that the two flange surfaces clamp the blind plate body.
[0021] When the overhaul is completed and the pipeline needs to be reset, first open the exhaust valve on the exhaust pipe, and the material between the blind plate body and the material side valve is discharged to the designated container through the exhaust pipe, and the pressure between the blind plate body and the material side valve is also released. Then connect nitrogen to the intake pipe, open the intake valve, and nitrogen enters the cavity between the blind plate body and the material side valve through the intake pipe, displacing the residual combustible gas in the cavity along the exhaust pipeline, and finally remove the blind plate body. This removal of the blind plate body is as easy to operate as removing an ordinary blind plate.
[0022] At the same time, before the blind plate body is removed, it can be determined whether there is material in the cavity between the blind plate body and the material side valve, the internal leakage material can be removed, and nitrogen can be introduced for replacement, ensuring that there is no material and no flammable gas when the blind plate is removed, avoiding damage caused by material splashing and flash fire, protecting the safety of personnel and equipment, and improving the safety of operation. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 A top view of an insertable blind plate structure provided by an embodiment of the utility model;
[0024] Figure 2 A side view of an insertable blind plate structure provided by an embodiment of the utility model;
[0025] Figure 3 A side view of another plug-in blind plate structure provided in an embodiment of the utility model.
[0026] The figure marks in the drawings of the specification include: blind plate body 1, groove 2, intake pipe 3, exhaust pipe 4, intake valve 5, exhaust valve 6, annular protrusion 7, lifting handle 8, first semicircular groove 9, second semicircular groove 10, first inclined surface 11, second inclined surface 12, hanging hole 13. DETAILED DESCRIPTION
[0027] In order to further explain the technical means and effects adopted by the utility model to achieve the predetermined utility model purpose, the specific implementation methods, structures, features and effects of the utility model application are described in detail below in conjunction with the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "embodiment" does not necessarily refer to the same embodiment. In addition, specific features, structures, or characteristics in one or more embodiments may be combined in any suitable form.
[0028] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.
[0029] like Figure 1 and Figure 2 As shown, an embodiment of the utility model provides an insertable blind plate structure, which includes: a blind plate body 1 and an air guide portion;
[0030] A groove 2 is provided in the middle of one side of the blind plate body 1;
[0031] The air guide portion includes an air intake pipe 3 and an exhaust pipe 4, which are radially connected to the groove 2 from the outer edge of the blind plate body 1, respectively. The air intake pipe 3 is installed with an air intake valve 5, and the exhaust pipe 4 is installed with an exhaust valve 6.
[0032] The working process of the plug-in blind plate structure is as follows:
[0033] When the production equipment is partially overhauled, the valve is closed, the maintenance pipeline is inspected for discharge, replacement, and sampling, and a blind plate body 1 is installed on the valve side close to the maintenance pipeline, with one side (groove 2) of the blind plate body 1 facing the material side valve, a sealing gasket is installed between one side of the blind plate body 1 and the flange surface of the material side valve, the exhaust pipe 4 is placed on the lower edge of the blind plate body 1, and the flange surface is tightened with bolts, so that the two flange surfaces clamp the blind plate body 1.
[0034] When the inspection is completed and the pipeline needs to be reset, first open the exhaust valve 6 on the exhaust pipe 4, and the material between the blind plate body 1 and the material side valve is discharged to the designated container through the exhaust pipe 4, and the pressure between the blind plate body 1 and the material side valve is also released. Then the nitrogen is connected to the intake pipe 3, and the intake valve 5 is opened. The nitrogen enters the cavity between the blind plate body 1 and the material side valve through the intake pipe 3, and the residual combustible gas in the cavity is replaced along the exhaust pipe 4. Finally, the blind plate body 1 is removed. The removal of the blind plate body 1 is as convenient as the removal of an ordinary blind plate.
[0035] In the technical solution of the utility model, before the blind plate body 1 is removed, it can be determined whether there is material in the cavity between the blind plate body 1 and the material side valve, the internal leakage material can be removed, and nitrogen can be introduced for replacement, thereby ensuring that there is no material and no flammable gas when the blind plate is removed, avoiding damage caused by material splashing and flash fire, protecting the safety of personnel and equipment, and improving the safety of operation.
[0036] Specifically, the intake valve 5 and the exhaust valve 6 are needle valves respectively.
[0037] Specifically, the groove 2 is circular and has the same center as the blind plate body 1 .
[0038] like Figure 1 and Figure 2 As shown, in a specific embodiment, opposite sides of the blind plate body 1 are respectively provided with a plurality of circles of concentric annular protrusions 7 .
[0039] In this embodiment, specifically, when the blind plate body 1 is installed, when the sealing gasket is installed on the opposite side of the blind plate body 1, the sealing gasket and the annular protrusion 7 on the opposite side of the blind plate body 1 fit together, thereby improving the sealing performance of the opposite side edge of the blind plate body 1.
[0040] like Figures 1 to 3 As shown, in a specific embodiment, it also includes a lifting handle 8, one end of which is fixedly welded to the outer edge of the blind plate body 1, and the other end is provided with a hanging hole 13.
[0041] In this embodiment, specifically, the valve identification plate recording relevant information is tied to the hanging hole 13 by a rope, so as to facilitate identification by inspection operators.
[0042] like Figures 1 to 3 As shown, in a specific embodiment, the air inlet pipe 3 and the exhaust pipe 4 are respectively located at opposite sides of the outer edge of the blind plate body 1 .
[0043] In this embodiment, specifically, during replacement, nitrogen enters the groove 2 of the blind plate body 1 along the intake pipe 3, and is discharged from the groove 2 of the blind plate body 1 along the exhaust pipe 4, and the intake pipe 3 and the exhaust pipe 4 are located at the radial distal end of the blind plate body 1, so that the nitrogen can fully flow to the entire cavity between the blind plate body 1 and the material side valve.
[0044] like Figure 3 As shown, in a specific embodiment, the bottom surface of the groove 2 is provided with a first semicircular groove 9 and a second semicircular groove 10, one end of the first semicircular groove 9 is axially connected to the intake pipe 3, and one end of the second semicircular groove 10 is axially connected to the exhaust pipe 4.
[0045] In this embodiment, specifically, the bottom surface of the groove 2 divides the radial cross section of the intake pipe 3 and the radial cross section of the exhaust pipe 4 equally, the first semicircular groove 9 corresponds to half of the radial cross section of the intake pipe 3, and the second semicircular groove 10 corresponds to half of the radial cross section of the exhaust pipe 4. When nitrogen replacement is used, the nitrogen can purge the material accumulated on the bottom surface of the groove 2 to ensure the thoroughness of the material replacement.
[0046] like Figure 3 As shown, in a specific embodiment, the other end of the first semicircular groove 9 is provided with a first inclined surface 11, and the other end of the second semicircular groove 10 is provided with a second inclined surface 12.
[0047] In this embodiment, specifically, when nitrogen is used to replace the material in the internal space of the groove 2, the nitrogen flows along the first inclined surface 11 in the first semicircular groove 9, which can change the direction of the nitrogen flow, and then the nitrogen is guided to the material side valve to replace the material in the material side valve area; and the second inclined surface 12 can guide the gas to be replaced into the second semicircular groove 10, and finally discharged along the exhaust pipe 4.
[0048] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.
Claims
1. An inserted blind plate structure, characterized in that: include: A blind plate body, wherein a groove is provided in the middle of one side of the blind plate body; The air guide part includes an air intake pipe and an exhaust pipe. The air intake pipe and the exhaust pipe are respectively radially connected to the groove from the outer edge of the blind plate body. The air intake pipe is equipped with an air intake valve, and the exhaust pipe is equipped with an exhaust valve.
2. The plug-in blind plate structure according to claim 1, characterized in that: The opposite sides of the blind plate body are respectively provided with a plurality of concentric annular protrusions.
3. The insertable blind plate structure according to claim 1, characterized in that: It also includes a lifting handle, one end of which is fixedly connected to the outer edge of the blind plate body, and the other end is provided with a hanging hole.
4. The insertable blind plate structure according to any one of claims 1 to 3, characterized in that: The air inlet pipe and the air outlet pipe are respectively located at opposite sides of the outer edge of the blind plate body.
5. The insertable blind plate structure according to claim 4, characterized in that: A first semicircular groove and a second semicircular groove are provided on the bottom surface of the groove, one end of the first semicircular groove is axially connected to the intake pipe, and one end of the second semicircular groove is axially connected to the exhaust pipe.
6. The insertable blind plate structure according to claim 5, characterized in that: The other end of the first semicircular groove is provided with a first inclined surface, and the other end of the second semicircular groove is provided with a second inclined surface.