Natural gas pipeline conversion elbow

Abstract

The utility model discloses a natural gas pipeline conversion elbow, which relates to the technical field of pipeline connection fittings, and comprises an elbow main body, a first joint and a second joint which are arranged at two ends of the elbow main body, and a positioning component and a locking component which are arranged on the first joint, the positioning assembly comprises a rectangular carrying plate, an assembling block, a rectangular frame and a supporting rod, the rectangular carrying plate is movably arranged on the peripheral face of the first connector in a sleeving mode through a center through hole, and a rectangular groove is formed in the side face of the rectangular carrying plate; the locking assembly comprises a two-way lead screw, a supporting transverse strip, a supporting block, a clamping semicircular ring and a vertical guide rod. The supporting rods on the side faces of the rectangular carrying plate can be inserted into the inserting through holes in the rectangular frame, the rectangular frame is assembled and positioned, a worker does not need to hold the rectangular frame when operating the locking assembly, and when the bent pipe body is abandoned, the locking assembly can be independently detached along with the rectangular frame. And when the plastic hose is placed on the conversion elbow, the locking assembly is simply positioned and is convenient to disassemble and assemble.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline connection accessories, in particular to a natural gas pipeline conversion elbow. Background Art

[0002] In the pipeline connection system, the connection methods between adjacent pipelines are usually groove connection (clamp connection) and threaded connection (threaded connection). Groove connection means that a groove is opened on the outer wall of the interface of two pipelines, and the interfaces of the two pipelines are aligned and fastened with a clamp; threaded connection means that one of the two connected pipelines has an external thread and the other has an internal thread. When it is necessary to realize the conversion between groove connection and threaded connection, other accessories need to be added in the prior art to assist, usually through complex structures such as threaded pipe clamps plus threaded flanges to achieve the conversion, and the connection methods used are different according to the actual situation, which will increase the working hours and material costs.

[0003] The publication (announcement) number is CN212929130U, which discloses a conversion elbow and a pipeline conversion assembly, and relates to the technical field of pipeline connection accessories. The conversion elbow includes an elbow body, and the elbow body includes a first joint and a second joint. The inner wall surface of the first joint is provided with an internal thread to match the external thread of the first external pipeline, and the first joint is threadedly connected to the first pipeline, and the outer wall surface of the second joint is provided with a first groove to achieve a groove connection with the second external pipeline. In this way, one end of the conversion elbow is threadedly connected to the adjacent pipeline, that is, a threaded connection, and the other end of the conversion elbow can be grooved with the adjacent pipeline, that is, a clamp connection, to achieve direct conversion of the two connection methods, without the need to use other complex accessories, thereby reducing labor time and material costs.

[0004] Although the above scheme can help the conversion elbow to connect the metal pipe and the plastic hose respectively on the natural gas pipeline through threaded connection and clamp connection, the clamp connection needs to be manually controlled to limit the clamp position when fixing the plastic hose to the conversion elbow. The operation of connecting the conversion elbow to the plastic hose is cumbersome, and a single clamp needs to be turned once to tighten the bolt to clamp and shrink the plastic hose. The conversion elbow cooperates with the external clamp to assemble the plastic hose for multiple sealing operations, which is laborious. For this reason, we propose a natural gas pipeline conversion elbow. Utility Model Content

[0005] The main purpose of the utility model is to provide a natural gas pipeline conversion elbow. By setting a positioning component and a locking component, the problems of manually holding and limiting the position of the clamp when the clamp is connected to the conversion elbow to fix the plastic hose, the cumbersome operation of connecting the conversion elbow to the plastic hose, and the laborious operation of assembling the conversion elbow with the external clamp to perform multiple sealing on the plastic hose are solved.

[0006] To solve the above technical problems, the utility model is implemented through the following technical solutions: a natural gas pipeline conversion elbow, comprising an elbow body and a first joint and a second joint arranged at both ends of the elbow body, and also comprising: a positioning assembly and a locking assembly arranged on the first joint;

[0007] The positioning assembly includes a rectangular carrier plate, a connecting block, a rectangular frame and a support rod, wherein the rectangular carrier plate is movably sleeved on the outer peripheral surface of the first joint through a central through hole, and a rectangular groove is provided on the side of the rectangular carrier plate, the connecting block is in an "L" shape and is fixedly arranged on the outer peripheral surface of one end of the first joint close to the elbow body, and the end surface of the connecting block is movably extended into the rectangular groove, the rectangular frame is movably sleeved on the outer peripheral surface of the first joint and a plug-in through hole is provided on its side, one end of the support rod is connected to the side of the rectangular carrier plate, and the other end of the support rod is movably extended into the plug-in through hole;

[0008] The locking assembly comprises a two-way screw rod, a supporting cross bar, a bracket, a clamping semicircular ring and a vertical guide rod, and a mounting groove is respectively provided on the inner walls of the two opposite sides of the rectangular frame, and the two-way screw rod is movably arranged on the vertical center axis of one of the mounting grooves. The supporting cross bar is provided with four and is equally divided into two groups, and one group of supporting cross bars corresponds to the positive and negative sections of threads symmetrically arranged on the two-way screw rod, respectively. The bracket block is provided with eight and is equally divided into four groups, and the four groups of bracket blocks are respectively fixedly arranged on the four supporting cross bars, and a strip through groove is provided on one side of the mounting slot facing the vertical center axis of the rectangular frame, and the bracket block is located on the strip through groove, and two annular grooves are provided on the outer peripheral surface of the first joint, and a clamping semicircular ring is fixedly arranged between every two brackets located in the same vertical center horizontal plane and at the same height position, and every two clamping semicircular rings are a group and are relatively arranged on an annular groove, the vertical guide rod is fixedly arranged on the other mounting groove and movably passes through another group of supporting cross bars, and a rotating disk is fixedly arranged on one end of the two-way screw rod that movably extends to the outside of the rectangular frame.

[0009] Preferably, there are four assembly blocks in total and they are distributed in an equidistant circular array, and the rectangular grooves are arranged in a one-to-one correspondence with the assembly blocks.

[0010] Preferably, there are two plug-in through holes and they are symmetrically arranged on the horizontal center plane of the rectangular frame, and the support rods and the plug-in through holes are arranged in a one-to-one correspondence.

[0011] Preferably, the bidirectional screw rod and the support rod are arranged perpendicular to each other.

[0012] Preferably, an internal thread is provided on the inner wall of the curved surface at the end of the second joint.

[0013] Compared with the prior art, the natural gas pipeline conversion elbow of the utility model has the following beneficial effects:

[0014] 1. In the utility model, by setting a positioning component, the rectangular frame is used as a carrier of the locking component to perform multiple sealing operations on the plastic hose. The rectangular carrier plate can be movably sleeved on the outer peripheral surface of the first joint through the central through hole. The assembly block that is "L"-shaped and fixedly arranged on the outer peripheral surface of one end of the first joint close to the elbow body can be plugged into the plug-in through hole on the side of the rectangular frame. The placement angle of the rectangular carrier plate on the first joint is positioned, and when the rectangular frame is subsequently inserted and placed outside the first joint, the support rod on the side of the rectangular carrier plate can be inserted into the plug-in through hole on the rectangular frame. The rectangular frame completes the assembly and positioning. The personnel do not need to hold the rectangular frame when operating the locking component. When the elbow body is discarded, the locking component can be detached separately with the rectangular frame. When the plastic hose is on the conversion elbow, it is simple and convenient to position the locking component for disassembly and assembly.

[0015] 2. In the utility model, a locking assembly is provided, and after the rectangular frame is held in position and at an angle by the positioning assembly, the bidirectional screw can be controlled to rotate forward and backward on the rectangular frame by holding the turntable, and two of the supporting cross bars threadedly connected to the bidirectional screw can be subjected to force and move relative to each other in the mounting groove, which can help two groups of support blocks to adjust the spacing, and the four clamping semicircular rings are driven by the two groups of support blocks to be close to each other in the two annular grooves on the outer circumferential surface of the first joint, and the external plastic hose sleeved on the first joint can complete multiple locking seals in the two annular grooves, and the other two supporting cross bars can slide and translate on the vertical guide rod to cooperate with the other two groups of support blocks to follow the clamping semicircular rings for synchronous adjustment, and the clamping semicircular rings are auxiliary guided and supported, and the conversion elbow assembly of the plastic hose for multiple sealing is simple and labor-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 This is a schematic diagram of the overall structure of a natural gas pipeline conversion elbow according to the utility model;

[0018] Figure 2 This is a schematic diagram of the top view structure of a natural gas pipeline conversion elbow of the utility model;

[0019] Figure 3 For this utility model Figure 2 Schematic diagram of the cross-sectional structure at AA in the middle;

[0020] Figure 4 For this utility model Figure 2 Schematic diagram of the cross-sectional structure at the middle BB;

[0021] Figure 5 For this utility model Figure 2 Schematic diagram of the cross-sectional structure at CC in the middle.

[0022] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0023] 1. The main body of the elbow;

[0024] 2. Positioning assembly; 201. Rectangular carrier plate; 202. Assembly block; 203. Rectangular frame; 204. Support rod;

[0025] 3. Locking assembly; 301. Bidirectional screw rod; 302. Support bar; 303. Support block; 304. Clamping semicircular ring; 305. Vertical guide rod;

[0026] 4. First joint;

[0027] 5. Second joint;

[0028] 6. Internal thread. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0030] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Embodiment 1

[0033] like Figure 1 , Figure 2 , Figure 4 as well as Figure 5 As shown, a natural gas pipeline conversion elbow comprises an elbow body 1 and a first joint 4 and a second joint 5 arranged at both ends of the elbow body 1, and further comprises: a positioning assembly 2 and a locking assembly 3 arranged on the first joint 4;

[0034] The positioning assembly 2 includes a rectangular carrier plate 201, a connecting block 202, a rectangular frame 203 and a support rod 204. The rectangular carrier plate 201 is movably mounted on the outer peripheral surface of the first joint 4 through a central through hole, and a rectangular groove is provided on the side of the rectangular carrier plate 201. The connecting block 202 is in an "L" shape and is fixedly arranged on the outer peripheral surface of one end of the first joint 4 close to the elbow body 1, and the end surface of the connecting block 202 is movably extended into the rectangular groove. The rectangular frame 203 is movably mounted on the outer peripheral surface of the first joint 4 and a plug-in through hole is provided on its side. One end of the support rod 204 is connected to the side of the rectangular carrier plate 201, and the other end of the support rod 204 is movably extended into the plug-in through hole.

[0035] The locking assembly 3 includes a bidirectional screw rod 301, a supporting cross bar 302, a bracket 303, a clamping semicircular ring 304 and a vertical guide rod 305. A mounting groove is respectively provided on the inner walls of the two opposite sides of the rectangular frame 203. The bidirectional screw rod 301 is movably arranged on the vertical center axis of one of the mounting grooves. There are four supporting cross bars 302 and they are equally divided into two groups. One group of supporting cross bars 302 corresponds to the positive and negative threads symmetrically arranged on the bidirectional screw rod 301. There are eight bracket blocks 303 and they are equally divided into four groups. The four groups of bracket blocks 303 are respectively fixedly arranged It is placed on four supporting horizontal bars 302, and a strip-shaped through groove is opened on one side of the mounting groove facing the vertical center axis of the rectangular frame 203, and the support block 303 is located on the strip-shaped through groove, and two annular grooves are opened on the outer peripheral surface of the first joint 4, and a clamping semicircular ring 304 is fixedly arranged between every two support blocks 303 located at the same vertical center horizontal plane and at the same height position, and every two clamping semicircular rings 304 are a group and are relatively arranged on an annular groove, and a vertical guide rod 305 is fixedly arranged on another mounting groove and movably passes through another group of supporting horizontal bars 302.

[0036] Furthermore, there are four assembly blocks 202 in total and they are distributed in an equidistant circular array, and the rectangular grooves are arranged in a one-to-one correspondence with the assembly blocks 202 .

[0037] Furthermore, there are two plug-in through holes, which are symmetrically arranged on the horizontal plane of the transverse center of the rectangular frame 203, and the support rods 204 are arranged in a one-to-one correspondence with the plug-in through holes.

[0038] The positioning component 2 makes it easy to position the locking component 3 when the plastic hose is on the conversion elbow, making disassembly and assembly more convenient.

[0039] Embodiment 2

[0040] like Figure 3 , Figure 4 as well as Figure 5 As shown, a natural gas pipeline conversion elbow comprises an elbow body 1 and a first joint 4 and a second joint 5 arranged at both ends of the elbow body 1, and further comprises: a positioning assembly 2 and a locking assembly 3 arranged on the first joint 4;

[0041] The positioning assembly 2 includes a rectangular carrier plate 201, a connecting block 202, a rectangular frame 203 and a support rod 204. The rectangular carrier plate 201 is movably mounted on the outer peripheral surface of the first joint 4 through a central through hole, and a rectangular groove is provided on the side of the rectangular carrier plate 201. The connecting block 202 is in an "L" shape and is fixedly arranged on the outer peripheral surface of one end of the first joint 4 close to the elbow body 1, and the end surface of the connecting block 202 is movably extended into the rectangular groove. The rectangular frame 203 is movably mounted on the outer peripheral surface of the first joint 4 and a plug-in through hole is provided on its side. One end of the support rod 204 is connected to the side of the rectangular carrier plate 201, and the other end of the support rod 204 is movably extended into the plug-in through hole.

[0042] The locking assembly 3 includes a bidirectional screw rod 301, a supporting cross bar 302, a bracket 303, a clamping semicircular ring 304 and a vertical guide rod 305. A mounting groove is respectively provided on the inner walls of the two opposite sides of the rectangular frame 203. The bidirectional screw rod 301 is movably arranged on the vertical center axis of one of the mounting grooves. There are four supporting cross bars 302 and they are equally divided into two groups. One group of supporting cross bars 302 corresponds to the positive and negative threads symmetrically arranged on the bidirectional screw rod 301. There are eight bracket blocks 303 and they are equally divided into four groups. The four groups of bracket blocks 303 are respectively fixedly arranged It is placed on four supporting horizontal bars 302, and a strip-shaped through groove is opened on one side of the mounting groove facing the vertical center axis of the rectangular frame 203, and the support block 303 is located on the strip-shaped through groove, and two annular grooves are opened on the outer peripheral surface of the first joint 4, and a clamping semicircular ring 304 is fixedly arranged between every two support blocks 303 located at the same vertical center horizontal plane and at the same height position, and every two clamping semicircular rings 304 are a group and are relatively arranged on an annular groove, and a vertical guide rod 305 is fixedly arranged on another mounting groove and movably passes through another group of supporting horizontal bars 302.

[0043] Furthermore, the bidirectional screw rod 301 and the support rod 204 are arranged perpendicular to each other.

[0044] Furthermore, an internal thread 6 is provided on the inner wall of the curved surface at the end of the second joint 5 .

[0045] The locking assembly 3 makes it simple and labor-saving to assemble the conversion elbow with the plastic hose for multiple sealing operations.

[0046] The following is the working principle of the utility model:

[0047] Before the rectangular frame 203 is used as a carrier of the locking component 3 to perform multiple sealing operations on the plastic hose, the rectangular carrier plate 201 is movably sleeved onto the outer peripheral surface of the first joint 4 through the central through hole, and the assembly block 202, which is in an "L" shape and fixedly arranged on the outer peripheral surface of one end of the first joint 4 close to the elbow body 1, is inserted into the insertion through hole on the side of the rectangular frame 203. The placement angle of the rectangular carrier plate 201 on the first joint 4 is positioned, and when the rectangular frame 203 is subsequently inserted and placed outside the first joint 4, the support rod 204 on the side of the rectangular carrier plate 201 is inserted into the insertion through hole on the rectangular frame 203, and the rectangular frame 203 completes the assembly and positioning. When operating the locking component 3, the personnel do not need to hold the rectangular frame 203, and the elbow When the pipe body 1 is discarded, the locking assembly 3 is detached separately with the rectangular frame 203, and the turntable is controlled to control the bidirectional screw rod 301 to rotate forward and backward on the rectangular frame 203. Two of the supporting cross bars 302 threadedly connected to the bidirectional screw rod 301 are subjected to force to move relative to each other in the installation groove to help two groups of support blocks 303 to adjust the spacing. The four clamping semicircular rings 304 are driven by the two groups of support blocks 303 to approach each other in the two annular grooves on the outer peripheral surface of the first joint 4, and the external plastic hose sleeved on the first joint 4 completes multiple locking seals in the two annular grooves. The other two supporting cross bars 302 slide and translate on the vertical guide rod 305 to cooperate with the other two groups of support blocks 303 to follow the clamping semicircular rings 304 for synchronous adjustment.

[0048] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A natural gas pipeline conversion elbow, comprising an elbow body (1) and a first joint (4) and a second joint (5) arranged at both ends of the elbow body (1), characterized in that: Also includes: A positioning assembly (2) and a locking assembly (3) arranged on the first joint (4); The positioning assembly (2) comprises a rectangular carrier plate (201), a connecting block (202), a rectangular frame (203) and a support rod (204); the rectangular carrier plate (201) is movably sleeved on the outer peripheral surface of the first joint (4) through a central through hole, and a rectangular groove is provided on the side of the rectangular carrier plate (201); the connecting block (202) is in an "L" shape and is fixedly arranged on the outer peripheral surface of one end of the first joint (4) close to the elbow body (1), and the end surface of the connecting block (202) is movably extended into the rectangular groove; the rectangular frame (203) is movably sleeved on the outer peripheral surface of the first joint (4) and a plug-in through hole is provided on the side of the rectangular carrier plate (201); one end of the support rod (204) is connected to the side of the rectangular carrier plate (201), and the other end of the support rod (204) is movably extended into the plug-in through hole; The locking assembly (3) comprises a bidirectional screw (301), a supporting cross bar (302), a support block (303), a clamping semicircular ring (304) and a vertical guide rod (305). The inner walls of the rectangular frame (203) on both sides facing each other are respectively provided with a mounting groove. The bidirectional screw (301) is movably arranged on the vertical center axis of one of the mounting grooves. The supporting cross bars (302) are provided with four and are equally divided into two groups. One group of supporting cross bars (302) respectively corresponds to the positive and negative sections of the thread symmetrically arranged on the bidirectional screw (301). The support blocks (303) are provided with eight and are equally divided into four groups. The four groups of support blocks (30 3) are respectively fixedly arranged on four supporting horizontal bars (302), a strip-shaped through groove is opened on one side of the installation groove facing the vertical center axis of the rectangular frame (203), and the support block (303) is located on the strip-shaped through groove, two annular grooves are opened on the outer peripheral surface of the first joint (4), a clamping semicircular ring (304) is fixedly arranged between every two support blocks (303) located at the same vertical center horizontal plane and at the same height position, and every two clamping semicircular rings (304) form a group and are relatively arranged on an annular groove, and the vertical guide rod (305) is fixedly arranged on another installation groove and movably passes through another group of supporting horizontal bars (302).

2. A natural gas pipeline conversion elbow according to claim 1, characterized in that: There are four assembly blocks (202) in total and they are distributed in an equidistant circular array, and the rectangular grooves and the assembly blocks (202) are arranged in a one-to-one correspondence.

3. A natural gas pipeline conversion elbow according to claim 1, characterized in that: There are two plug-in through holes in total and they are symmetrically arranged on the horizontal center plane of the rectangular frame (203), and the support rods (204) are arranged in a one-to-one correspondence with the plug-in through holes.

4. A natural gas pipeline conversion elbow according to claim 1, characterized in that: The bidirectional screw rod (301) and the support rod (204) are arranged perpendicular to each other.

5. The natural gas pipeline conversion elbow according to claim 1, characterized in that: An internal thread (6) is provided on the inner wall of the curved surface at the end of the second joint (5).

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