An opening and closing tool

Abstract

The application discloses an opening and closing tool for opening and closing a valve, wherein the valve is provided with a hand wheel, the hand wheel comprises a wheel ring, a wheel shaft and support rods, the support rods are arranged around the wheel shaft at intervals, the two ends of the support rods are connected to the wheel ring and the wheel shaft respectively, two adjacent support rods and the wheel ring enclose an insertion hole penetrating along the axial direction of the wheel shaft, and the wheel ring and the support rods enclose multiple insertion holes; the opening and closing tool comprises a clamping piece provided with multiple clamping rods, the number of the clamping rods is the same as that of the insertion holes, and the clamping rods are one-to-one corresponding, the clamping rods are operatively inserted into the corresponding insertion holes, and multiple clamping rods simultaneously abut against the front hole walls of the corresponding insertion holes in the rotating direction of the hand wheel; a handle piece; and a rod piece, the two ends of the rod piece are connected to the clamping piece and the handle piece respectively, and the rod piece is parallel to or coaxial with the wheel shaft.

Description

Technical Field

[0001] This application belongs to the field of valve opening and closing technology, specifically relating to an opening and closing tooling. Background Technology

[0002] Valves are one of the commonly used spare parts in coking plants. They are suitable for use in pipelines carrying various media and are used to control the flow of the media.

[0003] In related technologies, some valves are used in environments that may contain hazardous gases such as coal gas or hydrogen sulfide. For example, in coking plants, coal gas is transported through pipelines, and cooling water flows through cooling pipes to cool the coal gas in the pipelines. These cooling water pipes are generally laid underground, and manhole covers are used at the valve locations for easy maintenance or to open and close the valves. During the transportation of coal gas, there is a possibility of coal gas leakage into the cooling water pipes. Similarly, valves in pipelines within underground emergency water tanks may also contain hazardous gases such as hydrogen sulfide.

[0004] For valves located underground that may be exposed to hazardous gases, there is a risk of poisoning if workers directly enter sewers or emergency water tanks to operate the valves. Summary of the Invention

[0005] To address the technical problem of health risks to underground valve operators, this application provides an opening and closing tool.

[0006] This application provides an opening and closing fixture for opening and closing a valve. The valve is equipped with a handwheel, which includes a ring, a shaft, and support rods. Multiple support rods are arranged at intervals around the shaft. The two ends of each support rod are connected to the ring and the shaft, respectively. Two adjacent support rods and the ring together form an insertion hole extending axially along the shaft. The ring and the multiple support rods together form multiple insertion holes. The opening and closing fixture includes: The clip has multiple locking rods, the number of which is the same as the number of insertion holes and corresponds one-to-one. The locking rods can be operably inserted into the corresponding insertion holes, and multiple locking rods simultaneously abut against the front hole wall of the corresponding insertion hole along the rotation direction of the handwheel. Handle component; A rod, the two ends of which are respectively connected to the clamp and the handle, and are parallel or coaxial with the wheel axle.

[0007] In some embodiments, the locking element further includes a connecting portion, through which the locking lever is connected to the rod, and the connecting portion is radially extendable along the handwheel.

[0008] In some embodiments, the connecting part includes a first tube, a second tube, and a connecting pin. The first tube has a first hole group, which includes two coaxial first connecting holes, both of which are connected to the cavity of the first tube. The second tube has a second hole group, which includes two coaxial second connecting holes, both of which are connected to the cavity of the second tube. Multiple second hole groups are provided, and the multiple second hole groups are arranged sequentially along the axial direction of the second tube. In the first tube and the second tube, one is gapped around the outer periphery of the other, so that the first hole group and any of the second hole groups are coaxially connected to form a connecting hole group including two coaxial connecting holes. The connecting pin is operably inserted into the two connecting holes of the connecting hole group.

[0009] In some embodiments, there are multiple first hole groups, which are arranged at equal intervals along the axial direction of the first tube. There are also multiple second hole groups, which are arranged at equal intervals along the axial direction of the second tube. The distance between two adjacent first hole groups is the same as the distance between two adjacent second hole groups, so as to form at least one connecting hole group. There are multiple connecting pins, and any one of the connecting pins can be operably inserted into any one of the connecting hole groups.

[0010] In some embodiments, the locking rod is axially parallel to the rod, and the axial direction of the connecting portion is perpendicular to both the rod and the locking rod.

[0011] In some embodiments, there are three locking rods, and the number of locking rods, support rods, and insertion holes are the same; the included angle between two adjacent locking rods is 120°, and the included angle between two adjacent support rods is 120°.

[0012] In some embodiments, the rod is a telescopic member that extends and retracts along its own axial direction.

[0013] In some embodiments, the telescopic component is a telescopic cylinder.

[0014] In some embodiments, the handle includes a plurality of handles arranged radially around the ends of the handles. In some embodiments, four handlebars are provided, and the handlebars are telescopic.

[0015] The opening and closing fixture provided according to the embodiments of this application includes a locking component, a lever component, and a handle component. The locking component includes multiple locking levers, the number of which is the same as the number of insertion holes and corresponds one-to-one. The locking levers are operably inserted into the corresponding insertion holes, and multiple locking levers simultaneously abut against the hole walls of the corresponding insertion holes. The two ends of the levers are respectively connected to the locking component and the handle component, and are parallel or coaxial with the wheel axle.

[0016] The number of locking rods matches the number of insertion holes, and they correspond one-to-one. Each locking rod can be inserted into the corresponding insertion hole of the handwheel, creating a tight fit between one locking rod and the wall of one insertion hole. Multiple locking rods simultaneously press against the front wall of the corresponding insertion hole in the direction of handwheel rotation, meaning the locking rods press against the support rod at the front end of the corresponding insertion hole in the handwheel's rotation direction. This improves the stability of the handwheel's rotation and makes valve opening and closing smoother. By using the rod mechanism, the distance between the handle and the locking mechanism can be significant. The handle can be placed on the ground, while the locking mechanism is placed underground, close to the handwheel. This allows force to be applied to the handle on the ground, transmitted through the rod to the locking mechanism, driving the handwheel to rotate and opening or closing the valve. Operators can operate the valve without entering sewers or underground emergency water tanks, reducing the risk of injury. Attached Figure Description

[0017] Figure 1 A schematic diagram of the valve structure is shown.

[0018] Figure 2 A schematic diagram of the opening and closing fixture is shown.

[0019] Figure 3 A schematic diagram of the mechanism of the lever and handwheel is shown.

[0020] Figure 4 It shows Figure 2 A schematic diagram of the opening and closing fixture.

[0021] Figure 5 It shows Figure 2 A top view of the opening and closing fixture.

[0022] Figure 6 It shows Figure 5 BB cross-sectional view.

[0023] Figure 7 A cross-sectional view of the lever and the first tube is shown.

[0024] Explanation of reference numerals in the attached figures: 1000-Opening / closing fixture, 100-Clamping component, 110-Clamping rod, 120-Connecting part, 130-Connecting rod, 131-First pipe, 1311-First connecting hole, 132-Second pipe, 1321-Second connecting hole, 200-Rod, 210-Third pipe, 211-Third connecting hole, 220-Fourth pipe, 221-Fourth connecting hole, 230-Pin, 300-Handle component, 310-Handle rod; 500-Valve, 511-Insert hole, 512-Support rod, 513-Wheel ring, 514-Wheel axle. Detailed Implementation

[0025] To enable those skilled in the art to more clearly understand this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0026] This application provides an opening and closing fixture 1000, which allows operators to open and close valves 500 on the ground, thus preventing operators from directly entering underground valves 500 that may be filled with dangerous gas sources and reducing physical harm to operators.

[0027] Valve 500 can be a gate valve, used to open or close a pipeline at a specific location. Valve 500 includes a valve body, a valve core, and a handwheel. The valve body has a valve cavity with two openings that communicate with the pipeline. The handwheel's axle 514 is connected to the valve core, driving the valve core to press against or move away from the cavity wall, thereby closing or opening the valve cavity.

[0028] Please see Figure 1 The handwheel includes a wheel ring 513, a wheel axle 514, and support rods 512. The wheel axle 514 is connected to the valve core. Multiple support rods 512 are provided, and multiple support rods 512 are spaced around the wheel axle 514 with the wheel axle 514 as the center. The two ends of the support rods 512 are respectively connected to the wheel ring 513 and the wheel axle 514. Two adjacent support rods 512 and the wheel ring 513 form an insertion hole 511 that passes through the wheel axle 514 axially. The wheel ring 513 and multiple support rods 512 form multiple insertion holes 511.

[0029] By turning the handwheel, the valve core is rotated, causing it to press against the wall of the valve chamber or move away from the wall of the valve chamber, thus achieving the shut-off or opening of the valve chamber.

[0030] Please see Figure 2 as well as Figure 4 The opening and closing fixture 1000 provided in this application embodiment includes a locking member 100, a rod member 200, and a handle member. The locking member 100 includes a plurality of locking rods 110, the number of which is the same as the number of insertion holes 511 and corresponds one-to-one. The locking rods 110 are operably inserted into the corresponding insertion holes 511, and the plurality of locking rods 110 simultaneously abut against the hole wall of the corresponding insertion hole 511. The two ends of the rod member 200 are respectively connected to the locking member 100 and the handle member 300, and are parallel or coaxial with the wheel axle 514.

[0031] The number of levers 110 is the same as the number of insertion holes 511, and they correspond one-to-one. Levers 110 can be inserted into the corresponding insertion hole 511 of the handwheel. Thus, one lever 110 is tightly fitted against the wall of one insertion hole 511. Multiple levers 110 simultaneously abut against the front wall of the corresponding insertion hole 511 along the direction of handwheel rotation. That is, the levers 110 abut against the support rod 512 at the front end of the corresponding insertion hole 511 in the direction of handwheel rotation, thereby improving the stability of the handwheel rotation process and making the opening or closing operation of the valve 500 smoother.

[0032] By setting the lever 200, the distance between the handle 300 and the locking piece 100 can be large. This allows the handle 300 to be placed on the ground and the locking piece 100 to be placed underground and close to the handwheel. This enables the force applied to the handle 300 on the ground to be transmitted to the locking piece 100 through the lever 200, thereby driving the handwheel to rotate and opening or closing the valve 500. Operators can open or close the valve 500 without entering the sewer or underground emergency water tank, reducing the risk of injury to operators.

[0033] The locking member 100 serves as a structure that contacts the handwheel of the valve 500. In some embodiments, the locking member 100 further includes a connecting part 120. The locking member 100 is connected to the rod 200 through the connecting part 120, which is radially extendable along the handwheel.

[0034] The handwheel of valve 500 comes in various radial dimensions, some larger and some smaller. Generally, valves with larger dimensions have larger handwheel radial dimensions, requiring a greater torque to turn them. The radial dimension of the connecting part 120 is adjustable, allowing the locking rod 110 to act as close as possible to the ring 513 of the support rod 512 near the handwheel, thus extending the lever arm and reducing the effort required for the operator to turn the handle 300 to drive the handwheel. The adjustable radial position of the locking rod 110 also accommodates handwheels of different sizes for valve 500, improving the versatility of the opening and closing fixture 1000.

[0035] In other embodiments, the connecting part 120 may also be a connecting rod 130 with a fixed radial dimension. By setting multiple opening and closing fixtures 1000, each with a different size connecting rod 130, the handwheel of the valve 500 can be rotated by using the opening and closing fixture 1000 of the handwheel size. This can also achieve the rotation of the handwheel of the valve 500 of different sizes.

[0036] In some embodiments, please refer to Figure 4 as well as Figure 6The connecting part 120 includes a first tube 131, a second tube 132, and a connecting pin (not shown in the figure). The first tube 131 has a first hole group, which includes two coaxial first connecting holes 1311. Both first connecting holes 1311 are connected to the cavity of the first tube 131 and are perpendicular to the axial direction of the cavity of the first tube 131. The second tube 132 has a second hole group, which includes two coaxial second connecting holes 1321 and are perpendicular to the axial direction of the cavity of the second tube 132. There are multiple second hole groups, which are arranged sequentially along the axial direction of the second tube 132 itself. In the first tube 131 and the second tube 132, one is fitted with the other at a gap, so that the first hole group and any second hole group are coaxially connected to form a connecting hole group including two coaxial connecting holes. The connecting pin can be operably inserted into the two connecting holes of the connecting hole group. By connecting the first tube 131 and the second tube 132, the length of the connecting part 120 itself is adjustable, thereby making the position of the lever 110 adjustable along the radial direction of the handwheel. The connection between the first tube 131 and the second tube 132 is achieved by inserting and removing the connecting pin into the connecting hole group, which has good stability, is easy to operate manually, and has high reliability. In some other embodiments, the second tube 132 is gapped around its outer periphery, which also allows the length of the connecting part 120 itself to be adjustable.

[0037] In practice, the first tube 131 is connected to the clamp rod 110, and the second tube 132 is connected to the rod 200. Alternatively, the first tube 131 can be connected to the rod 200, and the second tube 132 can be connected to the rod 200.

[0038] In some embodiments, please refer to Figure 7 Multiple first hole groups are provided, and these groups are evenly spaced along the axial direction of the first tube 131. Multiple second hole groups are evenly distributed along the axial direction of the second tube 132. The distance between two adjacent first hole groups is the same as the distance between two adjacent second hole groups, forming at least one connecting hole group. Multiple connecting pins are provided, and any connecting pin can be operably inserted into any connecting hole group. Using multiple connecting pins to connect the first tube 131 and the second tube 132 provides higher stability. The diameter of the connecting pins is chosen to be as large as possible to ensure their strength and increase the torsional strength of the connection part 120.

[0039] In some embodiments, please refer to Figure 6 The locking rod 110 is axially parallel to the rod 200, and the connecting part 120 is axially perpendicular to both the rod 200 and the locking rod 110. This design saves effort and facilitates processing during operation. The locking rod 110 and the rod 200 can also have an angle, for example, not exceeding 5°. In some embodiments, please refer to Figure 4The handwheel has three locking rods 110, three support rods 512, and three insertion holes 511. Each locking rod 110 extends into one of the three insertion holes 511, and each locking rod 110 abuts against one of the three support rods 512 to transmit torque, thereby rotating the handwheel. In other embodiments, four locking rods 110, four support rods 512, and four insertion holes 511 can also be provided. Each of the four locking rods 110 extends into one of the four insertion holes 511, and each of the four locking rods 110 abuts against one of the four support rods 512 to transmit torque, also achieving handwheel rotation.

[0040] When there are three locking rods 110, the included angle between two adjacent locking rods 110 is 120°, and the included angle between two adjacent support rods 512 is also 120°. The locking rods 110 and the support rods 512 are evenly distributed, so that each locking rod 110 can cooperate with any insertion hole 511. Even if the opening and closing fixture 1000 rotates, it can be ensured that the three locking rods 110 are respectively abutted against the three support rods 512. In some other embodiments, the three support rods 512 may also be unevenly distributed. For example, two of the support rods 512 may be collinear to form a long rod extending along the diameter of the handwheel, and the third support rod 512 may be perpendicular to the long rod. Similarly, among the three locking rods 110, two of the locking rods 110 may be coplanar and abut against the radial sides of the long rod, and the third locking rod 110 may abut against the third support rod 512, which can also realize the rotation of the handwheel by the opening and closing fixture 1000.

[0041] The rod 200 is the connection structure between the clamp 100 and the handle 300. The longer the rod 200, the more suitable it is for valves 500 located at greater underground depths. In some embodiments, the rod 200 is a telescopic member that extends and retracts along its own axial direction, so that the opening and closing fixture 1000 can be used for valves 500 located at both greater and less underground depths. In other embodiments, multiple rods 200 can be provided, with different lengths. Both ends of any rod 200 can be detachably connected to the clamp 100 and the handle 300, thus making it suitable for valves 500 at different underground depths.

[0042] In some embodiments, the telescopic component can be a telescopic cylinder, such as an electric cylinder, a hydraulic cylinder, or a pneumatic cylinder. In other embodiments, the telescopic member can be a telescopic rod, which can adopt a structure similar to the connecting part 120. Specifically, the telescopic rod includes a third tube 210 and a fourth tube 220. The third tube 210 is connected to the clamp 100, and the fourth tube 220 is connected to the handle 300. The third tube 210 is provided with a third hole group, which includes two coaxial third connecting holes 211. The third connecting holes 211 communicate with the cavity of the third tube 210. The fourth tube 220 is provided with a fourth hole group, which includes two coaxial fourth connecting holes 221. There are multiple fourth hole groups, which are evenly distributed along the axial direction of the fourth tube 220. The third tube 210 is fitted outside the fourth tube 220 with gaps so that the third hole group communicates coaxially with any of the fourth hole groups to form a pin hole group including two first pin holes. The telescopic rod also includes a pin 230, which is inserted into the two pin holes of the pin hole group to achieve a stable connection between the third tube 210 and the fourth tube 220.

[0043] Multiple third hole groups can be provided, and these groups are evenly distributed along the axial direction of the third tube 210. The distance between two adjacent third hole groups is the same as the distance between two adjacent fourth hole groups. Thus, during the relative axial movement between the third tube 210 and the fourth tube 220, at least one pin hole group can be formed. Multiple pins 230 can be provided, and any pin 230 can be operably inserted into two pin holes in any pin hole group. With multiple pin hole groups, each containing a pin, the connection strength between the third tube 210 and the fourth tube 220 is higher.

[0044] In some embodiments, please refer to Figure 4 The handle 300 includes multiple levers 310, which are arranged radially around the end of the lever 200. During operation, the number of operators can be the same as the number of levers 310. Each operator operates on one lever 310, and multiple operators can reasonably rotate the opening and closing fixture 1000 to drive the handwheel to rotate, thereby opening or closing the valve 500.

[0045] In some embodiments, three or four handles 310 are provided. The handles 310 can be telescopic rods, for example, using the telescopic rod structure of the rod 200. Setting the handles 310 as telescopic rods allows for shorter lengths for easy storage and longer lengths to increase the lever arm, making it easier for operators to rotate the opening and closing fixture 1000.

[0046] The working process of the opening / closing fixture 1000 provided in this application is as follows: First, insert the opening / closing fixture 1000 with the clamp 100 facing downwards into the underground location of the valve 500 to determine the depth of the valve 500. Then, adjust the length of the rod 200 according to the depth of the valve 500. Next, adjust the length of the connecting part 120 according to the size of the handwheel. After adjustment, fix the positions of the first pipe 131 and the second pipe 132 with the connecting pin to achieve radial position adjustment of the clamp 110. Insert the adjusted opening / closing fixture 1000 clamp 100 underground, and insert the clamp 110 into the insertion hole 511 of the handwheel. The connecting part 120 and the corresponding support rod 512 have a very small angle, so that the support rod 512 is below and the connecting part 120 is above, and the support rod 512 supports the opening / closing fixture 1000. The operator rotates the handle 300 on the ground, and multiple clamps 110 simultaneously press against the corresponding support rods 512. Then, the handwheel is rotated to open or close the valve 500.

[0047] The connecting part 120 of the opening and closing fixture 1000 provided in this application has an adjustable length, which allows the use of handwheels of different sizes, saving effort for the operator when turning the handwheel. The lever 200 is designed as a telescopic structure, which can adapt to valves 500 in pits of different depths. The handle 300 has an adjustable length of handle 310, which changes the lever arm and saves effort.

[0048] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0049] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0050] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0051] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0052] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. An opening and closing tool for opening and closing valves, characterized in that, The valve is equipped with a handwheel, which includes a ring, an axle, and support rods. Multiple support rods are arranged at intervals around the axle, with each end connected to the ring and the axle respectively. Two adjacent support rods and the ring together form an insertion hole extending axially along the axle. The ring and the multiple support rods together form multiple insertion holes. The opening and closing fixture includes: The clip has multiple locking rods, the number of which is the same as the number of insertion holes and corresponds one-to-one. The locking rods can be operably inserted into the corresponding insertion holes, and multiple locking rods simultaneously abut against the front hole wall of the corresponding insertion hole along the rotation direction of the handwheel. Handle component; A rod, the two ends of which are respectively connected to the clamp and the handle, and are parallel or coaxial with the wheel axle.

2. The opening and closing fixture according to claim 1, characterized in that, The locking component also includes a connecting part, through which the locking rod is connected to the rod, and the connecting part is radially extendable along the handwheel.

3. The opening and closing fixture according to claim 2, characterized in that, The connecting part includes a first tube, a second tube, and a connecting pin; The first tube is provided with a first hole group, which includes two coaxial first connecting holes, both of which are connected to the lumen of the first tube. The second tube is provided with a second hole group, which includes two coaxial second connecting holes. The second hole group is provided with multiple holes and is arranged sequentially along the axial direction of the second tube. In the first tube and the second tube, one of them is fitted with a gap around the other so that the first hole group is coaxially connected with any of the second hole groups, thereby forming a connecting hole group including two coaxial connecting holes, and the connecting pin is operably inserted into the two connecting holes of the connecting hole group.

4. The opening and closing fixture according to claim 3, characterized in that, The first hole group is provided in multiple ways, and the multiple first hole groups are arranged at equal intervals along the axial direction of the first tube. The multiple second hole groups are arranged at equal intervals along the axial direction of the second tube. The distance between two adjacent first hole groups is the same as the distance between two adjacent second hole groups, so as to form at least one of the connecting hole groups. The connecting pin is provided in multiple ways, and any one of the connecting pins can be operably inserted into any one of the connecting hole groups.

5. The opening and closing fixture according to claim 2, characterized in that, The clamp rod is parallel to the axis of the rod, and the axis of the connecting part is perpendicular to the rod and the clamp rod.

6. The opening and closing fixture according to any one of claims 1-5, characterized in that, The device has three locking rods, and the number of locking rods, support rods, and insertion holes are the same; the included angle between two adjacent locking rods is 120°, and the included angle between two adjacent support rods is 120°.

7. The opening and closing fixture according to any one of claims 1-5, characterized in that, The rod is a telescopic member that extends and retracts along its own axial direction.

8. The opening and closing fixture according to claim 7, characterized in that, The telescopic component is a telescopic cylinder.

9. The opening and closing fixture according to any one of claims 1-5, characterized in that, The handle includes multiple handles, which are arranged radially around the ends of the handles.

10. The opening and closing fixture according to claim 9, characterized in that, The handlebars are provided in four sections, and the handlebars are telescopic.

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