Device for detecting tightness of check valve on line
By designing a device for online detection of check valve tightness in the blast furnace production equipment system, equipment failures and casualties caused by the flow of media into the wrong pipelines in various power pipelines are solved, and the function of online checking the tightness and functional status of the valve is reduced.
Patent Information
- Application Number
- CN202421032043.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-13
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-05-13
AI Technical Summary
In blast furnace production equipment systems, other media in various power lines flow into other pipelines, resulting in potential dangers of equipment failure and casualties.
Design a device for online testing of the tightness of the check valve, including installing a check valve on the main pipe, and by setting up multiple valves and pipe connections to achieve online checking of the tightness and functional status of the valve.
Through online inspection, the tightness of the valve and whether there is a fault can be determined in a timely manner, preventing the medium from flowing into the wrong pipeline, and reducing the risk of equipment failure and personnel injury.
Smart Images
Figure CN222671406U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ironmaking equipment, in particular to a device for online detection of tightness of a check valve. Background Art
[0002] In the equipment system of blast furnace production, there are many power pipelines with two kinds of media cross-used, but the high-pressure medium is poured into the equipment using the medium along the pipeline of another medium, causing equipment accidents and even personal injury accidents. In order to avoid such accidents, some processes are optimized to better serve production.
[0003] When the temperature of the blast furnace top is high, water is sprayed on the top to lower the temperature of the top. In order to prevent furnace dust from clogging the water pumping pipe, a nitrogen purge pipe is added to the water pipe before the water gun enters the furnace. The nitrogen purge effectively prevents furnace dust from entering the water pumping device. However, when pumping water, water enters the nitrogen tank along the nitrogen pipe, which freezes and blocks in winter. When the blast furnace is shut down, steam is injected into the top of the blast furnace to dilute the gas in the top of the blast furnace to the explosion limit. Because the steam pipe is directly connected to the blast furnace, if the pressure of the steam drum is low, the blast furnace gas enters the steam pipe, and there is a potential risk of gas poisoning. In the water supply system of the water cooling station pressure tank, the nitrogen gas in the gear box is poured into the water cooling station and the lifting pump station along the pipeline, which has a potential risk of poisoning.
[0004] Therefore, in order to eliminate hidden dangers, check equipment failures more conveniently and quickly, and effectively prevent the medium from entering other equipment systems and causing other equipment failures, this places high demands on the rigor of the equipment. Utility Model Content
[0005] The utility model provides a device for online checking the tightness of a check valve, which solves the problem that other media in various existing power pipelines flow into other pipelines, causing equipment failure and casualties.
[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0007] A device for online detection of the tightness of a check valve comprises a check valve installed on a main pipeline, a first valve is arranged on the main pipeline on one side of the check valve, a second valve is arranged on the main pipeline on the other side of the check valve, a third valve is arranged between the check valve and the first valve, and a fourth valve is arranged between the check valve and the second valve.
[0008] Furthermore, the main pipeline between the check valve and the first valve is connected to the first pipeline, and the third valve is arranged on the first pipeline.
[0009] Furthermore, a second pipeline is connected to the main pipeline between the check valve and the second valve, and the fourth valve is arranged on the second pipeline.
[0010] Furthermore, the first pipeline is communicated with the main pipeline, and the second pipeline is communicated with the main pipeline.
[0011] Furthermore, the first pipeline and the second pipeline are respectively arranged perpendicular to the main pipeline.
[0012] Furthermore, the first valve and the second valve can be selected as steam drum valves or remove the brine pump station valve, and the fourth valve is a drain valve.
[0013] The beneficial effects of the utility model are:
[0014] The utility model can meet the requirements of online inspection of valve tightness, and at the same time, online check whether the valve is damaged and whether the gate plate is detached, release water that affects the flow of the medium, restore the normal operation of the pipeline, and avoid personal injury accidents. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions of 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 described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0016] Figure 1 It is a schematic diagram of the device of the utility model.
[0017] Description of Figure Numbers:
[0018] 1. Main pipeline; 2. Check valve; 3. First valve; 4. Second valve; 5. First pipeline; 6. Second pipeline; 7. Third valve; 8. Fourth valve. DETAILED DESCRIPTION
[0019] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.
[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0021] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.
[0022] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values do not limit the scope of the utility model. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.
[0023] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise stated, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present utility model: the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.
[0024] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.
[0025] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.
[0026] The utility model provides a technical solution: a device for online detection of the tightness of a check valve, such as Figure 1 As shown, it includes a check valve 2 installed on a main pipeline 1, a first valve 3 is arranged on the main pipeline 1 on one side of the check valve 2, and a second valve 4 is arranged on the main pipeline 1 on the other side of the check valve 2; a first pipeline 5 is connected to the main pipeline 1 between the check valve 2 and the first valve 3, and a third valve is arranged on the first pipeline 5; a second pipeline 6 is connected to the main pipeline 1 between the check valve 2 and the second valve 4, and a fourth valve 8 is arranged on the second pipeline 6.
[0027] The first pipeline 5 is communicated with the main pipeline 1 , and the second pipeline 6 is communicated with the main pipeline 1 ; and the first pipeline 5 and the second pipeline 6 are respectively perpendicular to the main pipeline 1 .
[0028] The working method of this device is as follows:
[0029] By closing the first valve 3 and the second valve 4, opening the third valve 7 and the fourth valve 8, and letting the third valve 7 or the fourth valve 8 pass airflow in two directions, it can be judged whether the check valve 2 can be opened and closed tightly. By closing the second valve 4 and the fourth valve 8, opening the first valve 3 and the third valve 7, and judging whether the gate of the first valve 3 is off by the airflow direction and pressure of the third valve 7. Similarly, it can be judged whether the second valve 4 is faulty.
[0030] When the furnace top water supply system is in operation:
[0031] 1. Add a check valve 2 at a location far from the blast furnace in the main pipeline 1;
[0032] 2. Water is prone to backflow to the nitrogen tank pipeline, so add insulation to the pipe shell;
[0033] 3. Add a first valve 4 and a second valve 5 between the check valve 2 and the nitrogen tank and the blast furnace respectively to facilitate the inspection of the tightness of the check valve 2.
[0034] 4. The third valve 7 and the fourth valve 8 periodically check the tightness of the check valve 2.
[0035] When the steam system is turned on at the top of the blast furnace:
[0036] 1. The second valve 4 can use a steam drum valve, and the fourth valve 8 is used as a drain valve when the second valve 4 is opened.
[0037] 2. The third valve 7 and the fourth valve 8 periodically check the tightness of the check valve 2.
[0038] Desalted water system nitrogen pressure tank nitrogen replenishment pipeline
[0039] 1. The second valve 5 can be used to remove the brine pump station valve, and the fourth valve 8 is used as a drain valve.
[0040] 2. When there is no check valve 2 in the system, it is necessary to install valves 4 and 5. In an emergency, if the nitrogen main pipeline is frozen, the melted water can be discharged by roasting or steaming the frozen pipeline.
[0041] The water supply system of the water cooling station pressure tank closes the second valve 4 and opens the fourth valve 8 to determine whether the check valve 2 is tight.
[0042] For various dual-medium pipeline systems, the third valve 7 and the fourth valve 8 can be used to determine whether the valve plates of the first valve 3 and the second valve 4 are detached.
[0043] The above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the present invention according to the technical solution and inventive concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A device for online detection of the tightness of a check valve, characterized in that: The invention comprises a check valve (2) installed on a main pipeline (1), a first valve (3) being arranged on the main pipeline (1) on one side of the check valve (2), a second valve (4) being arranged on the main pipeline (1) on the other side of the check valve (2), a third valve (7) being arranged between the check valve (2) and the first valve (3), and a fourth valve (8) being arranged between the check valve (2) and the second valve (4).
2. The device for online checking tightness of a check valve according to claim 1 is characterized in that: The main pipeline (1) between the check valve (2) and the first valve (3) is connected to a first pipeline (5), and the third valve (7) is arranged on the first pipeline (5).
3. The device for online checking tightness of a check valve according to claim 2 is characterized in that: The second pipeline (6) is connected to the main pipeline (1) between the check valve (2) and the second valve (4), and the fourth valve (8) is arranged on the second pipeline (6).
4. The device for online checking tightness of a check valve according to claim 3 is characterized in that: The first pipeline (5) is in communication with the main pipeline (1), and the second pipeline (6) is in communication with the main pipeline (1).
5. The device for online checking tightness of a check valve according to claim 4 is characterized in that: The first pipeline (5) and the second pipeline (6) are respectively arranged perpendicular to the main pipeline (1).