A gas ball valve replacement device

Abstract

The present application discloses a gas ball valve replacement device, including a rod body, on which a limit block and an expansion assembly are installed, the limit block is used to limit the expansion assembly in one direction; a sleeve is also slidably installed on the rod body, the sleeve is used to squeeze the expansion assembly to deform the expansion assembly; the rod body and the sleeve are provided with mutually cooperating locking structures for locking the position of the rod body in the sleeve; a connecting pipe is movably installed on the sleeve, and a sealing structure is provided between the connecting rod and the sleeve; a mounting portion is provided on the connecting pipe; the inner wall of the mounting portion is provided with a thread for mounting in cooperation with the ball valve. Beneficial effects of the present application: the rod body can be driven to move backward by toggling the driving rod, and then the sleeve squeezes the expansion assembly and deforms it to seal the gas pipeline; the connecting pipe and the ball valve can be sealed and connected to ensure that when the ball valve is disassembled, the gas will not flow to the outside; the present device has the advantages of simple operation and good sealing effect.

Description

Technical Field

[0001] The present application relates to the technical field of pipeline plugging construction, and in particular to a gas ball valve replacement device. Background Art

[0002] A ball valve for controlling the gas flow is usually installed at the connection of the gas pipeline, so that users or operators can control the gas delivery according to actual needs. When the ball valve on the gas pipeline is damaged, it must be replaced immediately, otherwise it will cause safety hazards. At present, the replacement of the gas ball valve generally requires turning off the main gas switch, and for safety reasons, it is also necessary to ensure that the residual gas in the pipeline will not spread to the outside world; however, turning off the main gas switch for a long time will affect the normal operation of other gas pipelines.

[0003] At present, in order to not interrupt the delivery of gas during the process of replacing the ball valve, a sealing piece is usually used to seal the gas pipeline, but the ball valve needs to be disassembled before sealing; when the ball valve is loose, the gas will inevitably flow to the outside through the gap, making the safety of the construction workers unable to be guaranteed. Therefore, there is an urgent need for a gas ball valve replacement device that can ensure that the gas will not spread to the outside when the gas is not interrupted. Utility Model Content

[0004] One of the objects of the present application is to provide a gas ball valve replacement device that can solve at least one defect in the above-mentioned background technology.

[0005] In order to achieve at least one of the above-mentioned purposes, the technical solution adopted in the present application is: a gas ball valve replacement device, comprising a rod body, on which a limit block and an expansion assembly are installed, the limit block is used to limit the expansion assembly in one direction; a sleeve is also slidably installed on the rod body, and the sleeve is used to squeeze the expansion assembly so that the expansion assembly is deformed; the rod body and the sleeve are provided with mutually cooperating locking structures for locking the position of the rod body in the sleeve; a connecting pipe is movably installed on the sleeve, and a sealing structure is provided between the connecting rod and the sleeve; a mounting portion is provided on the connecting pipe; the inner wall of the mounting portion is provided with a thread that is mounted in cooperation with the ball valve. With this arrangement, the operator can connect the connecting pipe to the ball valve, and then move the rod body to force the expansion assembly to squeeze the sleeve to complete the deformation; after the expansion assembly is deformed, it will squeeze the inner wall of the gas pipeline to seal and prevent the gas from flowing to the outside; the locking structure can fix the deformation state of the expansion assembly; then, the operator can pull out the ball valve together with the connecting pipe and replace the ball valve; after the ball valve is replaced, when the operator restores the rod body to its original position, the expansion assembly will recover under its own elastic force.

[0006] Preferably, the middle part of the expansion component is raised and does not fit the surface of the rod body. With such arrangement, the deformation position of the expansion component can be concentrated in the middle part.

[0007] Preferably, a first stopper is installed between the expansion assembly and the limit block, and a second stopper is installed between the expansion assembly and the sleeve, and the thickness of the first stopper and the second stopper is greater than the thickness of the expansion assembly. In this way, the expansion assembly can be squeezed by the first stopper and the second stopper, so as to avoid direct scraping of the expansion assembly with the sleeve and the limit block, thereby improving the durability of the expansion assembly.

[0008] Preferably, the first stopper and the second stopper are both provided with a mounting groove on one side close to the expansion assembly, and the expansion assembly partially extends into the mounting groove. This arrangement ensures that when the expansion assembly is deformed, the ring opening of the expansion assembly will not pass over the first stopper and the second stopper.

[0009] Preferably, the side of the mounting groove away from the rod body is an inclined surface. With this arrangement, the expansion component can be pressed into the mounting groove; in addition, when the expansion component is deformed, the inclined surface of the mounting groove can provide a certain deformation space for the ring opening of the expansion component to prevent the ring opening of the expansion component from rolling inward.

[0010] Preferably, the locking structure includes a positioning groove and a positioning block, at least one positioning groove is provided on the end of the sleeve close to the second stopper, the positioning groove is in an "L" shape, and the rod body is provided with the same number of positioning blocks as the positioning grooves, and the positioning blocks partially extend into the positioning grooves. In this way, the rod body can be axially limited by the positioning groove; when the operator moves the positioning block to the corner of the positioning groove, the positioning block can be rotated to slide to the short side of the positioning groove, and the rod body is limited to prevent the expansion assembly from recovering under its own elastic force.

[0011] Preferably, the sealing structure is a sealing ring, which is installed on the inner wall of the connecting pipe, and the inner wall of the connecting pipe squeezes the sealing ring tightly against the rod body. In this way, the sealing ring can seal the sleeve in the connecting pipe to prevent the gas in the gas pipeline from flowing to the outside through the gap.

[0012] Preferably, a driving rod is rotatably mounted on one end of the rod body close to the sleeve, and the driving rod is used to squeeze the sleeve to drive the rod body to move. In this way, an operator can drive the rod body to move backward by toggling the driving rod.

[0013] Preferably, a pressure block is provided on the driving rod, a groove is provided inside the pressure block, a mounting block is provided at one end of the rod body, and the mounting block is rotatably mounted at the lower part of the groove. In this way, the mounting block can be rotatably connected with the pressure block, and the rotation of the pressure block can be used to squeeze the sleeve so that the rod body and the sleeve slide relative to each other.

[0014] Preferably, the width of the pressing block is not greater than the diameter of the sleeve, the length of the pressing block is greater than the diameter of the sleeve, and a rounded surface is provided on one side of the pressing block for pressing the sleeve. With such a configuration, the rounded surface of the pressing block and the sleeve can be slidably matched, further reducing the force required to move the driving rod.

[0015] Compared with the prior art, the beneficial effects of this application are:

[0016] The utility model can quickly drive the sleeve to squeeze the expansion component and deform the expansion component through a driving rod. The deformed expansion component is sealed by squeezing the inner wall of the gas pipeline, ensuring that the ball valve can be replaced when the gas is in a conveying state. The expansion component can be prevented from restoring through the limiting cooperation between the positioning groove and the positioning block, and the operator can control the deformation or restoration of the expansion component according to his own wishes.

[0017] The connecting pipe is fixedly connected to the ball valve through threaded cooperation. After the expansion assembly has completely blocked the gas pipeline, the ball valve and the connecting pipe are pulled out together to ensure that the gas will not flow to the outside when the ball valve is disassembled. This device has the advantages of simple operation and good sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the gas ball valve replacement device in this application.

[0019] Figure 2 This is a schematic diagram of the explosion structure of the gas ball valve replacement device in this application.

[0020] Figure 3 It is a schematic diagram of the cross-sectional structure of the gas ball valve replacement device in this application.

[0021] Figure 4 for Figure 3 Schematic diagram of the enlarged structure at part A in the middle.

[0022] Figure 5 for Figure 3 Schematic diagram of the enlarged structure at part B in the middle.

[0023] Figure 6 This is a schematic diagram of the installation structure of the rod body and the driving rod in this application.

[0024] In the figure: 1, rod body; 11, positioning block; 12, mounting block; 100, limit block; 101, first stop block; 102, second stop block; 2, sleeve; 21, positioning groove; 200, expansion assembly; 3, connecting pipe; 31, mounting part; 300, mounting groove; 4, driving rod; 41, pressure block; 400, sealing ring; 410, groove. DETAILED DESCRIPTION

[0025] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0026] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and cannot be understood as limiting the specific scope of protection of the present application.

[0027] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0028] The terms "including" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0029] One aspect of the present application provides a gas ball valve replacement device, such as Figure 1 and Figure 2As shown, one of the preferred embodiments includes a rod body 1, on which a limit block 100 and an expansion assembly 200 are installed. The limit block 100 is used to limit the expansion assembly 200 in one direction to prevent the expansion assembly 200 from falling off the rod body 1. A sleeve 2 is also slidably installed on the rod body 1, which is used to squeeze the expansion assembly 200 and deform the expansion assembly 200. The sleeve 2 and the rod body 1 are provided with mutually cooperating locking structures. When the ball valve is replaced, the expansion assembly 200 is extended into the gas pipeline by using the rod body 1 and the position of the sleeve 2 is kept unchanged. The rod body 1 is pulled to make the sleeve 2 squeeze the expansion assembly 200. After the expansion assembly 200 is deformed, it squeezes the inner wall of the gas pipeline to form a seal. At this time, the deformation state of the expansion assembly 200 can be maintained by the locking structure, so that the expansion assembly 200 can continue to seal the gas pipeline. This device can ensure that the gas will not spread to the outside after the ball valve is disassembled, thereby improving the safety of construction personnel.

[0030] Specifically, Figure 3 As shown, the middle of the expansion component 200 is raised and does not fit the surface of the rod body 1. When the expansion component 200 is squeezed, the deformation position of the expansion component 200 can be concentrated in the middle, thereby limiting the deformation point of the expansion component 200.

[0031] It should be noted that, in order to enable the expansion component 200 to deform repeatedly, the expansion component 200 should be made of a material with good elasticity, such as silicone, rubber, and polyurethane; in this embodiment, silicone is selected as the manufacturing material of the expansion component 200.

[0032] It should be known that the traditional gas ball valve replacement device generally requires the ball valve to be removed before the gas pipeline can be sealed. Although this can ensure the uninterrupted supply of gas, at the moment the ball valve is removed, part of the gas will immediately flow to the outside. The gas leakage can only be minimized by the operator's skills and hand speed.

[0033] In view of the above situation, in some embodiments of the present application, a connecting pipe 3 is movably mounted on the sleeve 2; Figure 1 As shown, the connecting pipe 3 is plugged into the sleeve 2, and a sealing structure is provided between the connecting pipe 3 and the sleeve 2 to prevent the gas from flowing to the outside from the joint. The connecting pipe 3 is provided with a mounting portion 31 for matching the ball valve, and the inner wall of the mounting portion 31 is provided with a thread adapted to the ball valve.

[0034] It is understandable that, in order to facilitate installation, the outer contour of the mounting portion 31 can be set to a polygon to reduce the difficulty of installing the connecting pipe 3, and the connecting pipe 3 can be twisted with a tool such as a wrench. In addition, in order to prevent the gas from escaping from the thread between the connecting pipe 3 and the ball valve, a gasket can be installed at the bottom of the mounting portion 31 for sealing.

[0035] In this embodiment, if Figure 1 and Figure 2 As shown, a first stopper 101 is installed between the expansion component 200 and the limit block 100, and a second stopper 102 is installed between the expansion component 200 and the sleeve 2; the first stopper 101 and the second stopper 102 can be used to squeeze the expansion component 200 to avoid direct scratching of the expansion component 200 with the sleeve 2 or the limit block 100, thereby improving the durability of the expansion component 200.

[0036] Specifically, the thickness of the first stop block 101 and the second stop block 102 is greater than the thickness of the expansion component 200. When the expansion component 200 is deformed, it can ensure that the ring of the expansion component 200 is always in contact with the first stop block 101 or the second stop block 102, preventing the ring of the expansion component 200 from crossing the first stop block 101 or the second stop block 102 and affecting the deformation effect.

[0037] It is understandable that as the number of deformations of the expansion component 200 increases, the ring of the expansion component 200 gradually becomes loose. After long-term use, the ring of the expansion component 200 may flip, causing the expansion component 200 to get stuck on the rod body 1, thereby reducing the sealing effect of the device.

[0038] Therefore, in some embodiments of the application, Figure 4 As shown, in order to further improve the service life of the expansion component 200, a mounting groove 300 is provided on the first block 101 and the second block 102 on one side close to the expansion component 200. By partially extending the expansion component 200 into the mounting groove 300, the ring opening of the expansion component 200 can be protected to a greater extent, and the ring opening of the expansion component 200 can be effectively prevented from flipping during the deformation process.

[0039] It should be noted that the size of the mounting groove 300 should be compatible with the thickness of the expansion component 200 to ensure that part of the expansion component 200 can be squeezed by the inner wall of the mounting groove 300 and fixed in the mounting groove 300 .

[0040] It is understandable that in order to further improve the connection stability between the expansion component 200 and the mounting groove 300, the side of the mounting groove 300 away from the rod body 1 can be an inclined surface. When the expansion component 200 is deformed, the inclined surface of the mounting groove 300 can provide a certain deformation space for the ring of the expansion component 200 to prevent the ring of the expansion component 200 from rolling inward.

[0041] In this embodiment, if Figure 1As shown, the locking structure includes a positioning groove 21 and a positioning block 11. The positioning groove 21 is arranged on one end of the sleeve 2 close to the second stop block 102, and the positioning block 11 is arranged on the rod body 1. When the rod body 1 is plugged into the sleeve 2, part of the positioning block 11 extends into the positioning groove 21 to limit the rotation angle and sliding distance of the rod body 1, thereby ensuring that the rod body 1 and the sleeve 2 can rotate synchronously.

[0042] Further, such as Figure 1 As shown, the positioning groove 21 is in an "L" shape, and the short side of the positioning groove 21 is used to axially limit the positioning block 11. When the rod body 1 moves and forces the expansion assembly 200 to deform, the positioning block 11 is driven to move from the long side portion of the positioning groove 21 to the short side portion by rotating the rod body 1, and then the positioning block 11 is engaged with the short side of the positioning groove 21 to prevent the expansion assembly 200 from being restored under the force of contraction. After the gas ball valve is replaced, the positioning block 11 can be released when it is moved to the long side of the positioning groove 21 again, so that the rod body 1 can be restored to the initial position under the contraction force of the expansion assembly 200.

[0043] It should be noted that the number of positioning blocks 11 and positioning slots 21 can be set according to actual needs. In some embodiments of the present application, the number of positioning slots 21 and positioning blocks 11 are set to two in combination with the structural strength of the tube sleeve 2; wherein the short sides of the two positioning slots 21 should be in opposite positions to facilitate the rod body 1 to move the positioning block 11 to the short side position of the positioning slot 21.

[0044] In this embodiment, if Figure 3 and Figure 5 As shown, the sealing structure between the connecting pipe 3 and the sleeve 2 is a sealing ring 400. Two sealing rings 400 are arranged on the inner wall of the connecting pipe 3. When the sleeve 2 is inserted into the connecting pipe 3, the inner wall of the connecting pipe 3 squeezes the sealing ring 400 tightly against the sleeve 2, so as to facilitate the sealing installation of the sleeve 2 in the connecting pipe 3, ensuring that when the sleeve 2 is inserted into the gas pipeline, the gas will not flow to the outside from the gap between the sleeve 2 and the connecting pipe 3.

[0045] It should be noted that the number of the sealing rings 400 can be appropriately changed according to actual conditions such as the pressure of the gas.

[0046] In this embodiment, if Figure 1 , Figure 2 and Figure 6 As shown, a driving rod 4 is rotatably mounted on one end of the rod body 1 near the sleeve 2, and the driving rod 4 is used to squeeze the sleeve 2 so that the sleeve 2 and the rod body 1 can slide relative to each other. The operator can control the deformation degree of the expansion assembly 200 by adjusting the angle between the driving rod 4 and the rod body 1. When the driving rod 4 returns to the initial position, the expansion assembly 200 will recover under its own elastic force.

[0047] It can be understood that the driving rod 4 can greatly save the force required by the operator to pull the rod body 1, thereby reducing the operator's work intensity.

[0048] Further, such as Figure 1 and Figure 6 As shown, a pressing block 41 is provided on the driving rod 4, and a groove 410 with two openings on both sides is provided inside the pressing block 41; a mounting block 12 is provided on the end of the rod body 1 close to the driving rod 4, and the mounting block 12 is inserted into the lower part of the groove 410, and the mounting block 12 and the pressing block 41 are rotatably connected through a connecting rod. The operator can force the pressing block 41 to squeeze the sleeve by toggling the driving rod 4, so that the rod body 1 moves backward, thereby completing the squeezing step of the expansion assembly 200.

[0049] Specifically, the width of the pressing block 41 is not greater than the diameter of the tube sleeve 2, and the length of the pressing block 41 is greater than the diameter of the tube sleeve 2, so that when the driving rod 4 is in the initial position, the pressing block 41 protrudes from the outer wall of the tube sleeve 2; on the one hand, the pressing block 41 can be rotated to squeeze the tube sleeve 2, and on the other hand, it can ensure that when the driving rod 4 is parallel to the rod body 1, the connecting pipe can be smoothly pulled out of the tube sleeve 2. A rounded surface is provided on one side of the pressing block 41 for squeezing the tube sleeve 2. When the pressing block 41 squeezes the tube sleeve, the rounded surface of the pressing block 41 can rotate more smoothly with the tube sleeve 2, further reducing the force required to pull the rod body 1.

[0050] It can be understood that the specific steps of disassembling the gas ball valve of the present device are as follows: before replacing the ball valve, the connecting pipe 3 is sealed and connected to the ball valve through threaded matching, the driving rod 4 is rotated and the driving rod 4 is parallel to the rod body 1, at this time, the expansion assembly 200 is deformed and the inside of the ball valve is blocked, and then the valve of the ball valve is opened to insert the deformed expansion assembly 200 into the gas pipeline, and then the ball valve is twisted to make it fall off the gas pipeline, and finally the ball valve and the connecting pipe 3 are pulled out together. The specific steps of installing the gas ball valve of the present device are as follows: the ball valve is sealed and connected to the connecting pipe 3 and then plugged into the sleeve 2, and then the ball valve is sealed and connected to the gas pipeline, the rod body 1 is pulled to move the expansion assembly 200 into the ball valve, and after waiting for the valve of the ball valve to be closed, the driving rod 4 is moved to the initial position to restore the expansion assembly 200, and finally the connecting pipe 3 is removed from the ball valve and detached from the ball valve together with the present device.

[0051] It should be noted that when disassembling or installing the connecting pipe 3 , one hand is required to fix the rod body 1 to prevent the connecting pipe 3 from driving the rod body 1 to rotate and affecting the blocking of the gas pipeline by the expansion assembly 200 .

[0052] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. A gas ball valve replacement device, comprising a rod body (1), characterized in that: A limit block (100) and an expansion assembly (200) are mounted on the rod body (1), the limit block (100) being used for limiting the expansion assembly (200) in one direction; a sleeve (2) is also slidably mounted on the rod body (1), the sleeve (2) being used for squeezing the expansion assembly (200) so as to deform the expansion assembly (200); mutually cooperating locking structures are provided on the rod body (1) and the sleeve (2) for locking the position of the rod body (1) in the sleeve (2); a connecting pipe (3) is movably mounted on the sleeve (2), a sealing structure being provided between the connecting pipe (3) and the sleeve (2); a mounting portion (31) is provided on the connecting pipe (3); and a thread for mounting in cooperation with a ball valve is provided on the inner wall of the mounting portion (31).

2. The gas ball valve replacement device according to claim 1, characterized in that: The middle part of the expansion assembly (200) is raised and does not fit the surface of the rod body (1).

3. The gas ball valve replacement device according to claim 1, characterized in that: A first stopper (101) is installed between the expansion assembly (200) and the limit block (100), and a second stopper (102) is installed between the expansion assembly (200) and the sleeve (2); the thickness of the first stopper (101) and the second stopper (102) is greater than the thickness of the expansion assembly (200).

4. The gas ball valve replacement device according to claim 3, characterized in that: A mounting groove (300) is provided on one side of the first stopper (101) and the second stopper (102) close to the expansion assembly (200), and a portion of the expansion assembly (200) extends into the mounting groove (300).

5. The gas ball valve replacement device according to claim 4, characterized in that: A surface of the installation groove (300) that is away from the rod body (1) is an inclined surface.

6. The gas ball valve replacement device according to claim 3 or 4, characterized in that: The locking structure comprises a positioning groove (21) and a positioning block (11); at least one positioning groove (21) is provided on one end of the sleeve (2) close to the second stop block (102), and the positioning groove (21) is in an "L" shape; the rod body (1) is provided with the same number of positioning blocks (11) as the number of the positioning grooves (21), and the positioning blocks (11) partially extend into the positioning grooves (21).

7. The gas ball valve replacement device according to claim 1, characterized in that: The sealing structure is a sealing ring (400), and the sealing ring (400) is mounted on the inner wall of the connecting tube (3). The inner wall of the connecting tube (3) presses the sealing ring (400) to be tightly attached to the rod body (1).

8. The gas ball valve replacement device according to claim 1, characterized in that: A driving rod (4) is rotatably mounted on one end of the rod body (1) close to the sleeve (2), and the driving rod (4) is used to squeeze the sleeve (2) to drive the rod body (1) to move.

9. The gas ball valve replacement device according to claim 8, characterized in that: The driving rod (4) is provided with a pressing block (41), and a groove (410) is provided inside the pressing block (41); a mounting block (12) is provided at one end of the rod body (1), and the mounting block (12) is rotatably mounted at the bottom of the groove (410).

10. The gas ball valve replacement device according to claim 9, characterized in that: The width of the pressing block (41) is not greater than the diameter of the sleeve (2), and the length of the pressing block (41) is greater than the diameter of the sleeve (2); a rounded surface is provided on one side of the pressing block (41) for pressing the sleeve (2).

Images