Highly clean gate valve for hydrogen working condition

Abstract

The utility model relates to a kind of high-purity gate valves for hydrogen working condition, comprising: valve body, the valve body has rotating through-hole, the rotating through-hole is through in the valve body;Valve stem and blade, the valve stem and the blade are fixedly connected together, and the blade is installed in the rotating through-hole of the valve body, when the valve stem rotates, the valve stem drives the blade to rotate in the rotating through-hole, so that the blade closes or opens the rotating through-hole;Rotating rod, the rotating rod and the valve stem are fixedly connected together, when rotating the rotating rod, the rotating rod drives the valve stem to rotate;Fixed stop, movable stop, the movable stop is pivotally connected on the rotating rod, when the rotating rod rotates to preset position, the movable stop and the fixed stop cooperate so that the rotating rod always remains at the preset position.

Description

Technical Field

[0001] This utility model relates to the field of valves, specifically to a high-cleanliness gate valve for hydrogen operation. Background Technology

[0002] High-cleanliness gate valves are typically installed at hydrogen delivery pipelines to allow for the interruption or resumption of hydrogen delivery. Existing gate valves installed in hydrogen delivery pipelines or hydrogen flow paths generally include a valve body, a vane, and a rotating rod. The valve body has a through-hole, and the vane and rotating rod are fixedly assembled together. The vane is placed in the through-hole of the valve body. When the rotating rod rotates, it causes the vane to rotate within the through-hole of the valve body, thereby allowing the vane to close or open the through-hole. This allows hydrogen to pass through or be blocked from passing through the through-hole of the valve body, thus interrupting or resuming the hydrogen flow path.

[0003] However, the gate valves of this type in the existing technology have a fatal flaw: as hydrogen flows through the through hole of the valve body, some of the hydrogen will flow onto the blades. In other words, the blades are subjected to a certain force, which causes the blades to deflect the valve stem. The greater the flow velocity of the hydrogen, the higher the probability of the blades deflecting. When the blades deflect, the through hole through which the hydrogen supply flows will become larger or smaller, thereby affecting the quality of hydrogen delivery. In severe cases, it may cause a major accident. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a high-cleanliness gate valve for hydrogen operation.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a high-cleanliness gate valve for hydrogen operation, comprising:

[0006] A valve body having a rotating through hole that extends through the valve body;

[0007] A valve stem and a blade are fixedly connected together, and the blade is installed in a rotating through hole of the valve body. When the valve stem rotates, the valve stem drives the blade to rotate in the rotating through hole, thereby causing the blade to close or open the rotating through hole.

[0008] A rotating rod is fixedly connected to the valve stem. When the rotating rod is rotated, the rotating rod drives the valve stem to rotate.

[0009] The device includes a fixed stop and a movable stop, the movable stop being pivotally connected to the rotating rod. When the rotating rod rotates to a preset position, the movable stop and the fixed stop cooperate to keep the rotating rod at that preset position.

[0010] In some embodiments of this application, preferably, a first connecting sleeve and a first bearing are further included. The first connecting sleeve has a first bearing mounting through hole, which extends through the first connecting sleeve. The valve body is provided with a first insertion through hole, which extends radially through the valve body and communicates with a rotation through hole of the valve body. The first bearing is fixedly installed in the first bearing mounting through hole of the first connecting sleeve. The valve stem and the first bearing are installed together, and at least a portion of the valve stem passes through the first bearing and is fixedly connected to the blade, thereby enabling the valve stem to rotate relative to the valve body.

[0011] In some embodiments of this application, preferably, a second connecting sleeve and a second bearing are further included. The second connecting sleeve has a second bearing mounting through hole, which extends through the second connecting sleeve. The valve body is provided with a second insertion through hole, which extends radially through the valve body and communicates with a rotation through hole of the valve body. The second bearing is fixedly installed in the second bearing mounting through hole of the second connecting sleeve. The valve stem and the second bearing are installed together, thereby enabling the valve stem to rotate relative to the valve body.

[0012] In some embodiments of this application, preferably, it further includes a fixed support, a first clamping plate, a second clamping plate, and a third bearing. The first clamping plate and the second clamping plate clamp the fixed stop between them, and the first clamping plate and the second clamping plate are fixedly connected together by bolts or screws, thereby fixing the first clamping plate, the fixed stop, and the second clamping plate together. The fixed support is provided with a mounting through hole, which passes through the fixed support and is adapted to the second clamping plate. The second clamping plate is inserted into the mounting through hole, thereby fixing the second clamping plate to the fixed support, so that the fixed stop is stationary relative to the fixed support. The third bearing mounting hole passes through the first clamping plate, the fixed stop, and the second clamping plate. The third bearing is fixedly installed in the third bearing mounting hole, and the valve stem and the third bearing are fixedly installed together. The valve stem extends from the third bearing and extends into the rotation through hole of the valve body. The fixed support is fixedly connected to the valve body.

[0013] In some embodiments of this application, preferably, the fixed stop is provided with a preset number of insertion slots, the insertion slots being formed by radially recessing a preset depth from the outer edge of the fixed stop; the movable stop includes an insertion end, when the insertion end of the movable stop is inserted into the insertion slot of the fixed stop, when the rotating rod rotates, the insertion end of the movable stop abuts against the fixed stop, thereby preventing the fixed stop from rotating, so that the valve stem remains stationary when stopped at a preset position.

[0014] In some embodiments of this application, preferably, the movable stop and the rotating rod are pivotally connected together, such that the movable stop pivots relative to the rotating rod; when no external force is applied to the movable stop, the insertion end of the movable stop is close to the insertion slot of the fixed stop; when an external force is applied to the movable stop, the insertion end of the movable stop moves away from the insertion slot of the fixed stop.

[0015] The beneficial effects of this application are as follows: The high-cleanliness gate valve for hydrogen operation provided by this application has a simple structure and is easy to assemble. The rotating rod drives the valve stem to rotate, and when the valve stem rotates, it drives the vane to rotate in the rotating through hole of the valve body. When the valve stem rotates to the preset position, the insertion end of the movable stop is inserted into the insertion groove of the fixed stop, thereby preventing the valve stem from rotating due to the force on the vane. When an external force is applied to the movable stop, the insertion end of the movable stop leaves the insertion groove of the fixed stop. At this time, the rotating rod is rotated again, and the rotating rod drives the valve stem, which in turn drives the vane to rotate in the rotating through hole of the valve body to the next preset position. The gate valve provided by this application completely solves the technical problem in the prior art where the vane is partially subjected to force due to the large flow rate and high velocity of hydrogen, causing the vane to drive the valve stem to deflect. With the gate valve of this application, the valve stem will not rotate after the vane rotates to the preset position, resulting in high quality hydrogen flow. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the high-cleanliness gate valve for hydrogen operation provided by this utility model.

[0017] Figure 2 Another structural schematic diagram of the high-cleanliness gate valve for hydrogen operation provided by this utility model.

[0018] Figure 3 Another structural schematic diagram of the high-cleanliness gate valve for hydrogen operation provided by this utility model.

[0019] Figure 4 Another structural schematic diagram of the high-cleanliness gate valve for hydrogen operation provided by this utility model.

[0020] Figure 5 Another structural schematic diagram of the high-cleanliness gate valve for hydrogen operation provided by this utility model. Detailed Implementation

[0021] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0022] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments, and the operational steps involved in each embodiment can also be rearranged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for clearly describing a particular embodiment and do not imply that they represent the necessary components and / or order.

[0023] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0024] Please refer to Figure 1-5 This application provides a high-cleanliness gate valve for hydrogen operation (hereinafter referred to as "the gate valve"), which is installed in the hydrogen delivery path to interrupt or connect the hydrogen delivery path.

[0025] The gate valve includes:

[0026] Valve body 1, the valve body 1 having a rotating through hole 100, the rotating through hole 100 extending through the valve body 1;

[0027] The valve stem 3 and the blade 4 are fixedly connected together, and the blade 4 is installed in the rotating through hole 100 of the valve body 1. When the valve stem 3 rotates, the valve stem 3 drives the blade 4 to rotate in the rotating through hole 100, thereby causing the blade 4 to close or open the rotating through hole 100.

[0028] Rotating rod 5, which is fixedly connected to valve rod 3, rotates the rotating rod 5 to drive valve rod 3 to rotate;

[0029] A fixed stop 7 and a movable stop 6 are provided. The movable stop 6 is pivotally connected to the rotating rod 5. When the rotating rod 5 rotates to a preset position, the movable stop 6 and the fixed stop 7 cooperate to keep the rotating rod 5 at that preset position. In this application, the fixed connection between the valve stem 3 and the blade 4 can be a bolt, screw, or other connection method, such as welding, snap-fit, etc. The blade 4 is located in the rotating through hole 100 of the valve body 1, while the valve stem 3 can be located in the rotating through hole 100 or outside the rotating through hole 100. In this application, a portion of the valve stem 3 is located in the rotating through hole 100.

[0030] Please refer to some embodiments of this application. Figure 1-5 The gate valve further includes a first connecting sleeve 12 and a first bearing 13. The first connecting sleeve 12 has a first bearing mounting through hole 120, which extends through the first connecting sleeve 12. The valve body 1 is provided with a first insertion through hole 101, which extends radially through the valve body 1 and communicates with the rotation through hole 100 of the valve body 1. The first bearing 13 is fixedly installed in the first bearing mounting through hole 120 of the first connecting sleeve 12. The valve stem 3 is installed together with the first bearing 13, and at least a portion of the valve stem 3 passes through the first bearing 13 and is fixedly connected to the blade 4, thereby enabling the valve stem 3 to rotate relative to the valve body 1. Thus, when the valve stem 3 rotates relative to the valve body 1, the valve stem 3 drives the blade 4 to rotate in the rotation through hole 100 of the valve body 1, thereby causing the blade 4 to open or close the rotation through hole 100 of the valve body 1, thereby connecting or interrupting the hydrogen flow path.

[0031] Please refer to some embodiments of this application. Figure 1-5The gate valve further includes a second connecting sleeve 14 and a second bearing 15. The second connecting sleeve 14 has a second bearing mounting through hole 140, which extends through the second connecting sleeve 14. The valve body 1 is provided with a second insertion through hole 103, which extends radially through the valve body 1 and communicates with the rotation through hole 100 of the valve body 1. The second bearing 15 is fixedly installed in the second bearing mounting through hole 140 of the second connecting sleeve 14. The valve stem 3 and the second bearing 15 are installed together, so that the valve stem 3 can rotate relative to the valve body 1. Thus, when the valve stem 3 rotates relative to the valve body 1, the valve stem 3 drives the vane 4 to rotate in the rotation through hole 100 of the valve body 1, so that the vane 4 opens or closes the rotation through hole 100 of the valve body 1, thereby realizing the connection or interruption of the hydrogen flow path.

[0032] Please refer to some embodiments of this application. Figure 1-5 The gate valve also includes a fixed support 8, a first clamping plate 9, a second clamping plate 11, and a third bearing 10. The first clamping plate 9 and the second clamping plate 11 fix the fixed stop 7 between them, and the first clamping plate 9 and the second clamping plate 11 are fixedly connected together by bolts or screws, thereby fixing the first clamping plate 9, the fixed stop 7, and the second clamping plate 11 together. The fixed support 8 is provided with a mounting through hole 80, which passes through the fixed support 8 and is adapted to the second clamping plate 11. The second clamping plate 11 is fixedly installed on the fixed support member 8 by inserting it into the mounting through hole 80, thereby making the fixed stop member 7 stationary relative to the fixed support member 8; the third bearing mounting hole 90 passes through the first clamping plate 9, the fixed stop member 7, and the second clamping plate 11, and the third bearing 10 is fixedly installed in the third bearing mounting hole 90, and the valve stem 3 and the third bearing 10 are fixedly installed together, and the valve stem 3 extends from the third bearing 10 and extends into the rotation through hole 100 of the valve body 1; the fixed support member 8 is fixedly connected to the valve body 1. In this way, when the rotating rod 5 rotates, it drives the valve stem 3 to rotate relative to the valve body 1, and when the valve stem 3 rotates, it drives the blade 4 to rotate in the rotation through hole 100 of the valve body 1.

[0033] Please refer to some embodiments of this application. Figure 1-5The fixed stop 7 is provided with a preset number of insertion slots 70, which are formed by radially recessing a preset depth from the outer edge of the fixed stop 7. The movable stop 6 includes an insertion end 61. When the insertion end 61 of the movable stop 6 is inserted into the insertion slot 70 of the fixed stop 7, the insertion end 61 of the movable stop 6 presses against the fixed stop 7 when the rotating rod 5 rotates, thereby preventing the fixed stop 7 from rotating the movable stop 6, thus keeping the valve stem 3 stationary when it stops at a preset position. In the prior art, if the hydrogen flow rate is large and the flow velocity is fast, some hydrogen acts on the blade 4, and the blade 4 will deflect under the force. At this time, the blade 4 will drive the valve stem 3 to rotate, thereby enlarging or increasing the size of the hole for hydrogen flow between the blade 4 and the rotating through hole 100 of the valve body 1, thus affecting the quality of hydrogen flow. In this application, when the valve stem rotates to the preset position, the blade also stops at the preset position. At this time, the insertion end 61 of the movable stop 6 is inserted into the insertion groove 70 of the fixed stop 7. The two work together to prevent the valve stem 3 from pre-rotating, so that the blade 4 will not force the valve stem 3 to rotate due to the large flow rate and high velocity of hydrogen.

[0034] Please refer to some embodiments of this application. Figure 1-5 The movable stop 6 and the rotating rod 5 are pivotally connected together via a pivot 16, thereby allowing the movable stop 6 to pivot relative to the rotating rod 5. When no external force is applied to the movable stop 6, the insertion end 61 of the movable stop 6 approaches the insertion slot 70 of the fixed stop 7; when an external force is applied to the movable stop 6, the insertion end 61 of the movable stop 6 moves away from the insertion slot 70 of the fixed stop 7. In this application, the movable stop 6 is equivalent to a lever, and the pivot 16 is equivalent to a fulcrum. When an external force acts on one end of the movable stop 6 relative to the insertion end 61, the insertion end 61 moves away from the insertion slot 70 of the fixed stop 7; when there is no external force, the insertion end 61 of the movable stop is inserted into the insertion slot 70 of the fixed stop 7 under the action of gravity.

[0035] The high-cleanliness gate valve for hydrogen operation provided in this application has a simple structure and is easy to assemble. The rotating rod drives the valve stem to rotate, which in turn drives the vane to rotate within the rotating through-hole of the valve body. When the valve stem rotates to a preset position, the insertion end of the movable stop inserts into the insertion slot of the fixed stop, thus preventing the valve stem from rotating due to force on the vane. When an external force acts on the movable stop, the insertion end of the movable stop leaves the insertion slot of the fixed stop. At this point, rotating the rotating rod again drives the valve stem, which in turn drives the vane to rotate within the rotating through-hole of the valve body to the next preset position. The gate valve provided in this application completely solves the technical problem in the prior art where the vane, due to the large flow rate and high velocity of hydrogen, experiences partial force acting on the vane, causing the vane to deflect the valve stem. With this gate valve, once the vane rotates to the preset position, the valve stem will not rotate again, resulting in high-quality hydrogen flow.

[0036] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A high-cleanliness gate valve for hydrogen operation, characterized in that, include: A valve body having a rotating through hole that extends through the valve body; A valve stem and a blade are fixedly connected together, and the blade is installed in a rotating through hole of the valve body. When the valve stem rotates, the valve stem drives the blade to rotate in the rotating through hole, thereby causing the blade to close or open the rotating through hole. A rotating rod is fixedly connected to the valve stem. When the rotating rod is rotated, the rotating rod drives the valve stem to rotate. A fixed stop and a movable stop are provided. The movable stop is pivotally connected to the rotating rod. When the rotating rod rotates to a preset position, the movable stop and the fixed stop cooperate to keep the rotating rod at the preset position. The fixed stop is provided with a preset number of insertion slots, which are formed by radially recessing a preset depth from the outer edge of the fixed stop. The movable stop includes an insertion end. When the insertion end of the movable stop is inserted into the insertion slot of the fixed stop, the insertion end of the movable stop presses against the fixed stop when the rotating rod rotates, thereby preventing the fixed stop from rotating and keeping the valve stem stationary when it stops at a preset position.

2. The high-cleanliness gate valve for hydrogen operation according to claim 1, characterized in that, It also includes a first connecting sleeve and a first bearing. The first connecting sleeve has a first bearing mounting through hole, which extends through the first connecting sleeve. The valve body is provided with a first insertion through hole, which extends radially through the valve body and communicates with the rotation through hole of the valve body. The first bearing is fixedly installed in the first bearing mounting through hole of the first connecting sleeve. The valve stem and the first bearing are installed together, and at least a portion of the valve stem passes through the first bearing and is fixedly connected to the blade, thereby enabling the valve stem to rotate relative to the valve body.

3. The high-cleanliness gate valve for hydrogen operation according to claim 1, characterized in that, It also includes a second connecting sleeve and a second bearing. The second connecting sleeve has a second bearing mounting through hole, which extends through the second connecting sleeve. The valve body is provided with a second insertion through hole, which extends radially through the valve body and communicates with the rotation through hole of the valve body. The second bearing is fixedly installed in the second bearing mounting through hole of the second connecting sleeve. The valve stem and the second bearing are installed together, so that the valve stem can rotate relative to the valve body.

4. The high-cleanliness gate valve for hydrogen operation according to claim 1, characterized in that, The valve body also includes a fixed support, a first clamping plate, a second clamping plate, and a third bearing. The first and second clamping plates clamp the fixed stop between them and are connected together by bolts or screws, thus fixing the first clamping plate, the fixed stop, and the second clamping plate together. The fixed support has a through hole that extends through the fixed support and is adapted to the second clamping plate. The second clamping plate is inserted into the through hole, thus fixing the second clamping plate to the fixed support and keeping the fixed stop stationary relative to the fixed support. The third bearing mounting hole extends through the first clamping plate, the fixed stop, and the second clamping plate. The third bearing is fixedly installed in the third bearing mounting hole, and the valve stem is fixedly installed together with the third bearing. The valve stem extends from the third bearing and into the rotation through hole of the valve body. The fixed support is fixedly connected to the valve body.

5. The high-cleanliness gate valve for hydrogen operation according to claim 1, characterized in that, The movable stop and the rotating rod are pivotally connected together, thereby allowing the movable stop to pivot relative to the rotating rod; When no external force is applied to the movable stop, the insertion end of the movable stop is close to the insertion slot of the fixed stop; when an external force is applied to the movable stop, the insertion end of the movable stop is away from the insertion slot of the fixed stop.

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