Pipeline plugging cock device

Abstract

The invention relates to a pipeline plugging cock device which comprises a clamping lock assembly and a rotating assembly. The clamping and locking assembly comprises a plug handle, a spiral plate and a plurality of locking ejector rods. An annular groove is formed in the side wall ring of the plug handle upwards and inwards, a sinking hole is formed in the center of the upper surface of the plug handle, one end of the locking ejector rod is fixedly connected with the locking ring, a driving block is arranged at the other end of the locking ejector rod, a spiral through groove is formed in the spiral plate, and a through hole is formed in the center of the spiral plate. The locking ejector rod penetrates through the plug handle in the radial direction, so that the locking ring is located on the side of the annular groove, the driving block is located on the side of the sunken hole, the spiral plate is installed in the sunken hole, and the driving block is located in the spiral through groove; the rotating assembly is in transmission connection with the through hole through a transmission shaft, a driving block of the locking ejector rod drives the locking ejector rod to do linear motion, so that the locking ring is driven to stretch out and enter an annular groove of the flange, matched connection of the plug handle and the flange is achieved, and medium circulation on the upper side and the lower side of the plug handle is isolated. According to the method, operation risk points are reduced, the adaptability is improved, and the operation efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of pipeline emergency repair, and in particular relates to a pipeline plugging and sealing cock device. Background Art

[0002] The plugging of holes in in-service pipelines without stopping the flow is one of the main technologies in the maintenance and repair industry. Through the plugging of holes in in-service pipelines without stopping the flow, the pipeline maintenance and renovation will not affect the normal transportation of the pipeline. One of the key steps is to plug the special pipe tee. At present, the most commonly used form on the market is the through-hole clamping ring pipe tee, which is composed of flange, branch pipe and guard plate. Among them, the flange needs to be processed with a through hole on the side to install the clamping ring mechanism. The plug with a sealing ring is placed in the tee flange using special equipment, and the plug and flange are connected through the clamping ring mechanism to achieve medium blocking and achieve the purpose of plugging.

[0003] However, the retaining ring mechanism of this structural form is more complicated, and the through holes on the side of the flange increase the risk points. The coordination of multiple components poses safety hazards such as poor sealing, leakage, and jamming. The plug is connected to the special equipment through a device called a plug handle coupler to complete the lowering operation. This connection form can only achieve up and down linear motion, and cannot achieve rotation function.

[0004] In addition to the most commonly used through-hole clamp pipe tees mentioned above, there are also other forms of special plugging pipe tees on the market, such as cam rotary type, spline insertion type, internal lock plugging type, built-in rotary type, etc., but they all have certain shortcomings, such as low pressure bearing capacity, complicated operating procedures, and poor adaptability. Summary of the invention

[0005] The purpose of the present invention is to solve the safety hazards existing in the through-holes punched on the side of the flange, solve the problem that the plug handle coupler cannot rotate, and solve the problems of low pressure bearing capacity, complicated operating procedures, and poor adaptability of other forms of special sealing pipe tees, so as to reduce operational risk points, increase adaptability, and improve operational capacity and efficiency.

[0006] The present invention solves the technical problem by adopting the following technical solutions:

[0007] A pipeline plugging cock device comprises a locking assembly and a rotating assembly;

[0008] The locking assembly comprises a plug handle, a spiral plate, and a plurality of locking push rods; a ring groove is formed upward and inwardly on the side wall ring of the plug handle, a sink hole is formed at the central position of the upper surface of the plug handle, one end of the locking push rod is fixedly connected to the locking ring, a driving block is formed at the other end of the locking push rod, a spiral through groove is formed on the spiral plate, and a through hole is formed in the center;

[0009] The locking push rod penetrates the plug handle in the radial direction, so that the locking ring is located on the side of the annular groove, the driving block is located on the side of the sinking hole, the spiral plate is installed in the sinking hole, and the driving block is located in the spiral through groove;

[0010] The rotating assembly is connected to the through hole through a transmission shaft. When the rotating assembly rotates, the transmission shaft and the spiral plate are rotated together, and the locking push rod is driven to make linear motion through the driving block of the locking push rod, thereby driving the locking ring to extend into the annular groove of the flange, thereby realizing the matching connection between the plug handle and the flange, and isolating the medium flow on the upper and lower sides of the plug handle.

[0011] It also includes a sealing ring, which is installed on the side wall of the plug handle below the annular groove, and is used to achieve sealing and isolation of the media on the upper and lower sides of the plug handle.

[0012] Furthermore, the rotating assembly includes a fixed matrix, and the fixed matrix can be connected to the plug handle via bolts.

[0013] Furthermore, the rotating assembly also includes a rotating male body, which is sleeved in the fixed female body. The rotating male body and the fixed female body are connected by a pair of clamping blocks. The clamping blocks can be embedded in or out of the fixed female body in the radial direction, so that the rotating male body and the fixed female body are separated or connected in the axial direction.

[0014] Furthermore, a through stepped hole is provided in the axial direction of the rotating male body, a core shaft is installed in the through stepped hole, a claw is formed at the bottom of the core shaft, and the claw cooperates with the side of the block, so that when the core shaft moves downward, the claw drives a pair of blocks to move in opposite directions, and the blocks are completely disengaged from the fixed mother body, so that the rotating male body can be separated from the fixed mother body.

[0015] Furthermore, a clamping block spring is sleeved on the clamping block, and the clamping block spring can reset the clamping block after the core shaft moves upward, so that the rotating male body and the fixed female body are connected through the clamping block.

[0016] Furthermore, it also includes a core shaft spring, which is installed below the core shaft in the stepped hole and can enable the core shaft to move upward and reset, and the core shaft will not fall out of the stepped hole when moving upward.

[0017] Furthermore, there are two pairs of claws, each pair of claws cooperates with the guide grooves on the clamping block, and an inverted V-shaped structure is formed between the two pairs of claws, so that when the core shaft moves downward, the claws of the inverted V-shaped structure drive the two clamping blocks closer to each other through the guide grooves.

[0018] Furthermore, at least one pair of locking bolts is installed on the side wall of the rotating male body, and the locking bolts can realize the positioning of the core shaft.

[0019] Furthermore, the annular groove is located on the inner wall of the flange, and a positioning step is also provided on the inner wall of the flange to achieve installation and positioning of the plug handle.

[0020] The advantages and positive effects of the present invention are:

[0021] The pipeline plugging cock device of the present invention can effectively reduce the risk of leakage and is easy to operate. It solves the safety hazard of punching holes on the side of the flange and the problem that the plug handle coupler cannot rotate. It can also solve the problems of other forms of special plugging pipe fittings such as low pressure bearing capacity, complicated operating procedures, and poor adaptability, so as to reduce operational risk points, increase adaptability, and improve operational capacity and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments, but it should be understood that these drawings are designed only for explanation purposes and are not intended to limit the scope of the present invention. In addition, unless otherwise specified, these drawings are intended only to conceptually illustrate the structural configurations described herein and are not necessarily drawn to scale.

[0023] Figure 1 A schematic structural diagram of a three-way assembly of a pipeline plugging and sealing device provided in an embodiment of the present invention;

[0024] Figure 2 A schematic diagram of the structure of a locking assembly of a pipeline plugging and sealing cock device provided in an embodiment of the present invention;

[0025] Figure 3 A schematic diagram of the structure of a rotating assembly of a pipeline plugging cock device provided in an embodiment of the present invention;

[0026] Figure 4 A schematic structural diagram of a rotating male body of a pipeline plugging cock device provided in an embodiment of the present invention;

[0027] Figure 5 A schematic structural diagram of a pipeline plugging cock device provided in an embodiment of the present invention when using a driving device and a push rod. DETAILED DESCRIPTION

[0028] First of all, it should be noted that the specific structure, features and advantages of the present invention will be specifically described below by way of example, but all descriptions are only for illustration and should not be understood as limiting the present invention in any way. In addition, any single technical feature described or implied in the embodiments mentioned herein, or any single technical feature displayed or implied in the drawings, can still be combined or deleted between these technical features (or their equivalents) to obtain more other embodiments of the present invention that may not be directly mentioned in this document. In addition, in order to simplify the drawings, the same or similar technical features may be marked only in one place in the same drawing.

[0029] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0030] Example 1

[0031] The present embodiment provides a pipeline plugging device, comprising a locking assembly 2 and a rotating assembly 3;

[0032] The locking assembly 2 includes a plug handle 21, a spiral plate 25, and a plurality of locking push rods 24; a side wall ring of the plug handle 21 is provided with an annular groove 210 upward and inwardly, a sink hole is provided at the center of the upper surface of the plug handle 21, one end of the locking push rod is fixedly connected to the locking ring 23, and a driving block 28 is provided at the other end of the locking push rod 24, and a spiral through groove 26 is provided on the spiral plate 25, and a through hole 27 is provided at the center;

[0033] The locking push rod penetrates the plug handle 21 in the radial direction, so that the locking ring is located on the side of the annular groove, the driving block 28 is located on the side of the sink hole, the spiral plate is installed in the sink hole, and the driving block 28 is located in the spiral through groove 26;

[0034] The rotating component 3 is connected to the through hole 27 through a transmission shaft 39. When the rotating component 3 rotates, the transmission shaft 39 and the spiral plate 25 rotate together, and the driving block 28 of the locking push rod 24 drives the locking push rod 24 to make a linear motion, thereby driving the 23 locking ring to extend into the annular groove 14 of the flange 11, thereby realizing the matching connection between the plug handle 21 and the flange 11, and isolating the medium flow on the upper and lower sides of the plug handle 21; in order to better realize the isolation of medium flow, it can also be considered: also including a sealing ring 22, the sealing ring is installed on the side wall of the plug handle 21 below the annular groove, and the sealing ring 22 is used to realize the sealing isolation of the medium on the upper and lower sides of the plug handle 21.

[0035] like Figure 2As shown, the shape of the spiral groove 26 is a long arc structure, and the distance between the long arc structure and the center of the spiral plate 25 is gradually changing, so that the spiral groove 26 can drive the driving block 28 to gradually approach or move away from the center of the spiral plate 25, so that the locking ring 23 is retracted into or extended out of the annular groove 210, and in order to prevent the spiral plate 25 from easily falling out of the sinking hole, a retaining ring 29 is installed on the side wall of the sinking hole to form a blocking effect on the spiral plate 25.

[0036] The rotating assembly 3 includes a fixed matrix 32, which can be connected to the plug handle 21 by a bolt 37. The axis of the fixed matrix 32 coincides with the axis of the plug handle 21 and is connected by the bolt 37. The rotating assembly 3 also includes a rotating male body 31, which is sleeved in the fixed matrix 32. The rotating male body 31 and the fixed matrix 32 are connected by a pair of clamping blocks. The clamping blocks can be embedded in or out of the fixed matrix 32 in the radial direction, so that the rotating male body 31 and the fixed matrix 32 are separated or connected in the axial direction.

[0037] Specifically, a through stepped hole is provided in the axial direction of the rotating male body 31, and a core shaft 34 is installed in the through stepped hole. A claw A is formed at the bottom of the core shaft, and the claw cooperates with the side of the clamping block, so that when the core shaft moves downward, the claw drives a pair of clamping blocks to move in opposite directions, and the clamping blocks are completely disengaged from the fixed mother body 32, so that the rotating male body 31 can be separated from the fixed mother body 32; the claws are two pairs, and each pair of claws cooperates and contacts with the guide grooves 47 on the clamping block 35, and an inverted V-shaped structure 43 is formed between the two pairs of claws, so that when the core shaft moves downward, the claws of the inverted V-shaped structure drive the two clamping blocks to approach each other through the guide grooves.

[0038] The clamping block is also provided with a clamping block spring 36, which can reset the clamping block after the core shaft moves upward, so that the rotating male body 31 and the fixed female body 32 are connected through the clamping block; it also includes a core shaft spring 311, which is installed below the core shaft in the stepped hole, and can reset the core shaft when it moves upward, and the core shaft will not fall out of the stepped hole when it moves upward.

[0039] Specifically, Figure 3 , 4 As shown, a bolt hole 314 is arranged on the fixed end face of the fixed matrix, and the fixed matrix is ​​connected with the plug handle 21 through the bolt 37 passing through the bolt hole 314. A large through hole 315 is arranged along the axial direction, and the rotating male body 31 is inserted into the fixed matrix through the large through hole 315. An inner ring groove 313 is arranged on the inner wall of the fixed matrix, and the inner ring groove 313 facilitates one end of the clamping block to be embedded in the fixed matrix;

[0040] The rotating male body 31 is an axial rotating body, which is a stepped shaft structure. A long conical surface 316 is provided on the first shaft section, and a fork groove 317 is provided on the second shaft section. A through stepped hole is provided at the axial center of the rotating male body 31. The first hole section is a threaded hole 319, the second hole section is a light hole, and the third hole section is a light hole. A stepped hole 318 is provided on the inner wall of the third hole section, and an inner bevel 320 is provided at the shoulder of the second hole section. The fourth hole section is a threaded hole 321. A through threaded hole 322 perpendicular to the axis is provided at the long conical surface of the first shaft section of the rotating male body. The mandrel is provided with a thick shaft section. and a thin shaft section, wherein the thin shaft section and the thick shaft section are provided with an outer conical surface 41 at the shoulder, the thin shaft section is an optical axis, and four claws are provided at the end of the thick shaft section, two claws form a pair, a through groove 42 is formed between a pair of claws for the block to move, and an inverted V-shaped structure 43 is formed between the two pairs of claws; one end of the block is provided with a rotating cap 44, and an L-limiting surface 45 is provided on the rotating cap; the other end of the block is provided with a guide shaft 46, and a guide groove 47 is provided at the end face of the guide shaft; one end of the transmission shaft is provided with a bolt hole 48, and the other end of the transmission shaft is provided with a polygonal column 49.

[0041] The core shaft 34 is assembled to coincide with the center line of the rotating male body 31, the block spring 36 cooperates with the guide shaft 46 of the block 35 and is installed in the stepped hole 318 of the rotating male body 31, and a group of the block and block spring are also installed on the symmetrical plane with the axis of the rotating male body 31. Then, the washer 310, the core shaft spring 311, and the screw plug 38 are installed in the rotating male body 31 in sequence. Finally, the transmission shaft 39 is connected to the rotating male body 31 through the screw 312; at this time, the polygonal column 49 of the transmission shaft 39 cooperates with the through hole 27 of the spiral plate.

[0042] like Figure 5 As shown, the driving device 51 is installed in cooperation with the long conical surface 316 of the rotating male body 31, the conical surfaces fit together, and the end face of the push rod 52 of the driving device 51 contacts the end face of the thin shaft section of the core shaft 34, which is positioned by the locking bolt 33; the push rod 52 is pressed down to transmit the force to the core shaft 34, driving the core shaft 34 to move downward, driving the block 35 to move inward in the radial direction of the rotating male body 31 until the end faces of the two block guide shafts 46 contact, at this time, the rotating cap 44 of the block is retracted into the rotating male body, and the rotating male body 31 is installed in the fixed mother body 32, and then, the pressure of the push rod 52 of the driving device is released, and the block spring 36 and the core shaft spring 311 are ejected under the joint action, and the block enters the inner ring groove 313 of the fixed mother body, and finally, the plug handle 21, the rotating male body 31, and the fixed mother body 32 are connected.

[0043] The locking ring 23 is rotated into the annular groove 210 of the plug handle 21 through the spiral plate 25, and the driving device 51 drives the plug handle 21 equipped with the locking ring 23, the rotating male body 31, and the fixed female body 32 to be lowered to the step 15 of the inner hole of the flange 11 through the fork groove 317; then, the driving device 51 rotates, driving the rotating male body 31 to rotate, and also driving the transmission shaft 39 and the spiral plate 25 to rotate together, and the locking push rod 24 is driven to make a linear motion through the driving block 28 of the locking push rod 24, thereby driving the locking ring 23 to extend into the annular groove 14 of the flange 11, so as to realize the matching connection between the plug handle 21 and the flange 11, and the sealing ring 22 is used to realize sealing, so as to isolate the medium flow on the upper and lower sides of the plug handle 21.

[0044] After the above-mentioned actions are completed, the device needs to be dismantled. The push rod 52 of the driving device 51 applies pressure to the core shaft 34 to move the core shaft 34 downward, driving the two clamping blocks 35 to move toward the axial direction of the rotating male body 31 until the end faces of the guide shafts 46 of the two clamping blocks 35 are in contact. At this time, the rotating cap 44 of the clamping block 35 is retracted into the rotating male body 31, and the rotating male body 31 is disengaged from the fixed mother body 32. The driving device 51 is used to lift out the rotating male body 31, and the operation is completed. In addition, at least one pair of locking bolts 33 are installed on the side wall of the rotating male body 31, and the locking bolts can realize the positioning of the core shaft.

[0045] It should be noted that the push rod 52 can be installed in the stepped hole through the threaded hole 319 , and the screw plug 38 can be installed at the bottom of the stepped hole through the threaded hole 321 .

[0046] like Figure 1 As shown, the tee assembly in the present invention includes a flange 11, a straight pipe section 12 and a protective plate 13 that can be covered on the pipe. The annular groove 14 is located on the inner wall of the flange 11, and a positioning step 15 is also provided on the inner wall of the flange, so that the inner hole of the flange forms a stepped hole to achieve the installation positioning of the plug handle.

[0047] The above embodiments describe the present invention in detail, but the contents are only preferred embodiments of the present invention and cannot be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the present invention.

Claims

1. A pipeline plugging device, characterized in that: It includes a locking assembly and a rotating assembly; The locking assembly comprises a plug handle, a spiral plate, and a plurality of locking push rods; a ring groove is formed upward and inwardly on the side wall ring of the plug handle, a sink hole is formed at the central position of the upper surface of the plug handle, one end of the locking push rod is fixedly connected to the locking ring, a driving block is formed at the other end of the locking push rod, a spiral through groove is formed on the spiral plate, and a through hole is formed in the center; The locking push rod penetrates the plug handle in the radial direction, so that the locking ring is located on the side of the annular groove, the driving block is located on the side of the sinking hole, the spiral plate is installed in the sinking hole, and the driving block is located in the spiral through groove; The rotating assembly is connected to the through hole through a transmission shaft. When the rotating assembly rotates, the transmission shaft and the spiral plate are rotated together, and the locking push rod is driven to make linear motion through the driving block of the locking push rod, thereby driving the locking ring to extend into the annular groove of the flange, thereby realizing the matching connection between the plug handle and the flange, and isolating the medium flow on the upper and lower sides of the plug handle.

2. A pipeline plugging device according to claim 1, characterized in that: It also includes a sealing ring, which is installed on the side wall of the plug handle below the annular groove, and is used to achieve sealing isolation of the media on the upper and lower sides of the plug handle.

3. A pipeline plugging device according to claim 1, characterized in that: The rotating assembly includes a fixing matrix, and the fixing matrix can be connected to the plug handle by bolts.

4. A pipeline plugging device according to claim 3, characterized in that: The rotating assembly also includes a rotating male body, which is sleeved in the fixed female body. The rotating male body and the fixed female body are connected by a pair of clamping blocks. The clamping blocks can be embedded in or out of the fixed female body in the radial direction, so that the rotating male body and the fixed female body are separated or connected in the axial direction.

5. A pipeline plugging cock device according to claim 4, characterized in that: A through stepped hole is provided in the axial direction of the rotating male body, a core shaft is installed in the through stepped hole, a claw is formed at the bottom of the core shaft, and the claw cooperates with the side of the clamping block, so that when the core shaft moves downward, the claw drives a pair of clamping blocks to move in opposite directions, and the clamping blocks are completely disengaged from the fixed mother body, so that the rotating male body can be separated from the fixed mother body.

6. A pipeline plugging cock device according to claim 5, characterized in that: A clamping block spring is also sleeved on the clamping block, and the clamping block spring can reset the clamping block after the core shaft moves upward, so that the rotating male body and the fixed female body are connected through the clamping block.

7. A pipeline plugging cock device according to claim 5, characterized in that: It also includes a core shaft spring, which is installed below the core shaft in the stepped hole and can enable the core shaft to move upward and reset. When the core shaft moves upward, it will not fall out of the stepped hole under the action of the stepped hole.

8. A pipeline plugging cock device according to claim 5, characterized in that: There are two pairs of claws, each pair of claws cooperates with the guide grooves on the clamping block, and an inverted V-shaped structure is formed between the two pairs of claws, so that when the core shaft moves downward, the claws of the inverted V-shaped structure drive the two clamping blocks closer to each other through the guide grooves.

9. A pipeline plugging cock device according to claim 5, characterized in that: At least one pair of locking bolts is installed on the side wall of the rotating male body, and the locking bolts can realize the positioning of the core shaft.

10. A pipeline plugging cock device according to claim 1, characterized in that: The annular groove is located on the inner side wall of the flange, and a positioning step is also provided on the inner side wall of the flange to realize the installation and positioning of the plug handle.

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