Natural gas transmission station valve auxiliary replacement device

Abstract

The utility model belongs to the technical field of pressure regulating valve auxiliary replacement devices, and particularly relates to a natural gas transmission station valve auxiliary replacement device. The device comprises a hanging bracket, the hanging bracket is of an n-shaped structure, fixing rings are connected to the bottoms of vertical parts on the two sides of the hanging bracket, supporting rings are arranged at the bottoms of the fixing rings, the rear ends of the fixing rings are hinged to the rear ends of the supporting rings, and the front ends of the fixing rings are connected with the front ends of the supporting rings through connecting pieces; two supporting legs are hinged to the bottom of each supporting ring, and adjusting assemblies are installed on the supporting legs. The two supporting legs at the bottom of the supporting ring are swung front and back to support the pipeline, the pipeline is locked through the adjusting assembly after being supported, the pressure adjusting valve is connected with the top of the hanging bracket through the hanging belt and then replaced, and the pipelines on the two sides of the pressure adjusting valve are fixed between the fixing ring and the supporting ring and are not prone to displacement. The horizontal part at the top of the hanging bracket can be used for hanging the pressure regulating valve to prevent the pressure regulating valve from falling off, and manpower is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of auxiliary replacement devices for pressure regulating valves, and in particular relates to an auxiliary replacement device for valves in a natural gas transmission station. Background Art

[0002] The natural gas pressure regulating valve is a device used to regulate and stabilize the natural gas pressure. It is mainly used in the high, medium and low pressure pipelines in the urban gas transmission and distribution system. Its main function is to automatically change the gas flow through the regulating valve to keep the outlet gas at a specified pressure, thereby ensuring that the gas appliances have a stable fuel-air ratio. In order to ensure the normal operation of the pressure regulating valve and prevent safety hazards caused by component damage and internal impurity blockage, it needs to be replaced regularly.

[0003] When replacing a pressure regulating valve that is in a suspended state, after the pressure regulating valve is removed from the gas pipeline, the upstream and downstream gas pipelines will be offset due to deformation caused by the lack of a support frame at the bottom of the pipeline; when the new pressure regulating valve is installed, the flanges connecting the upstream and downstream pipelines are difficult to align with the flanges of the pressure regulating valve.

[0004] In the case of a heavy valve, after loosening the connecting bolts between the natural gas pipeline and the pressure regulating valve, the valve collapses under the influence of gravity, making it difficult to remove the bolts, and the removed bolts are also easily damaged. During installation, there is no lifting point, and small lifting tools such as hand hoists cannot be used, making the installation of the pressure regulating valve difficult and requiring the cooperation of multiple people. Utility Model Content

[0005] The utility model aims to provide a natural gas transmission station valve auxiliary replacement device to prevent the natural gas pipeline from deviating during the process of replacing the pressure regulating valve.

[0006] The auxiliary replacement device for valves at a natural gas transmission station comprises a vertically arranged hanger, which is in the shape of a Chinese character "冂", and the bottoms of the vertical parts on both sides of the hanger are connected with a fixing ring with a semi-circular structure and an opening facing downward, and a supporting ring with a semi-circular structure and an opening facing upward is provided at the bottom of the fixing ring, and an embracing space communicating left and right is formed between the fixing ring and the supporting ring, and the rear end of the fixing ring is hinged to the rear end of the supporting ring, and the front end of the fixing ring is detachably connected to the front end of the supporting ring through a connecting piece;

[0007] The bottom of the support ring is hinged with two support feet that are spaced front and back and vertically arranged. The tops of the support feet are hinged on the support ring. The lower ends of the support feet can swing back and forth. The support feet are equipped with adjustment components that lock the lower ends of the support feet after swinging back and forth.

[0008] Open the fixing ring and the supporting ring, place the pipes on the left and right sides of the pressure regulating valve on the left and right supporting rings respectively. The pressure regulating valve is located between the two supporting rings. Then swing the fixing ring to embrace the supporting ring and fix it. Swing the two supporting feet at the bottom of the supporting ring back and forth so that the front and rear supporting feet form an "eight" - shaped structure to support the pipe. The downward opening angle is adjusted according to the height of the pipe. After supporting, lock it through the adjusting component to prevent the supporting feet from swinging back and forth. Connect the pressure regulating valve to the top of the hanger through a sling. Then replace the pressure regulating valve. When replacing a relatively heavy pressure regulating valve and loosening the flange plates connecting the left and right ends of the pressure regulating valve to the pipes, since the pressure regulating valve is unstable, it is easy for the pipes on the left and right sides to shift. The supporting feet, supporting ring, fixing ring and hanger can fix the pipes on both sides of the pressure regulating valve in the embracing space and are not easy to shift. The horizontal part at the top of the hanger can be used to hang the pressure regulating valve to prevent it from falling, saving manpower.

[0009] Further, the supporting feet include a first supporting foot at the front side and a second supporting foot at the rear side;

[0010] A first cross - beam is provided between the two first supporting feet at the front side. The left end of the first cross - beam is hinged to the first supporting foot on the left side, and the right end is hinged to the first supporting foot on the right side;

[0011] A second cross - beam is provided between the two second supporting feet at the rear side. The left end of the second cross - beam is hinged to the second supporting foot on the left side, and the right end is hinged to the second supporting foot on the right side;

[0012] The first cross - beam and the second cross - beam are symmetrically arranged front and back. Threaded holes that communicate front and back are provided on the first cross - beam and the second cross - beam, and threaded rods in threaded fit are inserted into the threaded holes.

[0013] By rotating the threaded rod, the first cross - beam and the second cross - beam move back and forth, thereby controlling the opening and closing angle between the first supporting foot and the second supporting foot. Specifically, rotating the threaded rod clockwise drives the first cross - beam and the second cross - beam to approach each other, reducing the opening and closing angle between the first supporting foot and the second supporting foot; rotating the threaded rod counterclockwise drives the first cross - beam and the second cross - beam to move away from each other, increasing the opening and closing angle between the first supporting foot and the second supporting foot. Or rotating the threaded rod clockwise drives the first cross - beam and the second cross - beam to move away from each other, increasing the opening and closing angle between the first supporting foot and the second supporting foot; rotating the threaded rod counterclockwise drives the first cross - beam and the second cross - beam to approach each other, reducing the opening and closing angle between the first supporting foot and the second supporting foot.

[0014] Further, both between the left and right ends of the first cross - beam and the first supporting foot and between the left and right ends of the second cross - beam and the second supporting foot are hinged through pivot shafts.

[0015] The pivot - shaft hinge facilitates the rotation of the first supporting foot relative to the first cross - beam and the rotation of the second supporting foot relative to the second cross - beam.

[0016] Further, a rocking handle is installed at one end of the screw rod.

[0017] The rocking handle facilitates the rotation of the screw rod, saving time and effort.

[0018] Further, a hook is installed on the horizontal part at the top of the hanging bracket.

[0019] The hook facilitates hooking the sling connecting the pressure regulating valve.

[0020] Further, the connecting piece is a bolt, and convex blocks are fixed on both the fixed ring and the support ring corresponding to the bolt;

[0021] A first groove that opens forward and communicates up and down is formed on the convex block corresponding to the fixed ring;

[0022] A second groove with an open right end is formed at the top of the convex block corresponding to the support ring. The lower end of the screw rod of the bolt is hinged in the second groove, and the upper end can swing up and down. After swinging upward, it passes through the first groove.

[0023] After the screw rod of the bolt swings upward and is located in the first groove, the nut on the screw rod above the first groove is screwed downward to fix the front ends of the fixed ring and the support ring.

[0024] Further, the bolt is a wing nut.

[0025] The wing nut facilitates installation without using tools.

[0026] Compared with the prior art, the utility model has the following beneficial effects:

[0027] Swing the two support feet at the bottom of the support ring back and forth so that the front and rear support feet form an "eight" - shaped structure to support the pipeline. The downward opening angle is adjusted according to the height of the pipeline. After good support, it is locked through the adjustment component to prevent the support feet from swinging back and forth. Connect the pressure regulating valve to the top of the hanging bracket through the sling, and then replace the pressure regulating valve. When replacing a relatively heavy pressure regulating valve and loosening the flange disks connecting the left and right ends of the pressure regulating valve to the pipeline, since the pressure regulating valve is unstable, it is easy for the pipelines on both sides to shift. The support feet, support ring, fixed ring, and hanging bracket can fix the pipelines on both sides of the pressure regulating valve in the embracing space and are not easy to shift. The horizontal part at the top of the hanging bracket can be used to hang the pressure regulating valve to prevent it from falling, saving manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a front - view structural schematic diagram of a valve auxiliary replacement device for a natural gas transmission and distribution station;

[0029] Figure 2 For Figure 1 the top - view structural schematic diagram;

[0030] Figure 3 is Figure 1 a schematic cross-sectional structure diagram along line A-A in

[0031] Figure 4 is Figure 1 a schematic cross-sectional structure diagram along line B-B in

[0032] Figure 5 is Figure 1 a three-dimensional structure diagram of

[0033] Figure 6 a schematic structure diagram when a valve auxiliary replacement device for a natural gas transmission station is in use;

[0034] Figure 7 is Figure 5 a reduced schematic explosion structure diagram.

[0035] Names of each component in the figure: 1, hanging bracket; 2, lifting hook; 3, fixed ring; 4, bolt; 5, support ring; 6, first support foot; 7, first cross beam; 8, rocking handle; 9, second cross beam; 10, screw rod; 11, second support foot. Specific embodiments

[0036] The following further illustrates the present utility model through specific embodiments in conjunction with the accompanying drawings, but is not used to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present invention.

[0037] Embodiment

[0038] The following materials are adopted in this embodiment:

[0039] 1. Prepare several sections of square tubes with high strength and light weight, such as aluminum alloy, for making the hanging bracket 1, the first support foot 6, the first cross beam 7, the second cross beam 9 and the second support foot 11;

[0040] 2. Prepare a section of round tube with high strength and light weight, such as aluminum alloy, for making the fixed ring 3 and the support ring 5;

[0041] 3. Prepare one rocking handle 8, one screw rod 10 and one lifting hook 2;

[0042] 4. Prepare six pivot shafts and two bolts 4, and the bolt 4 is a wing nut.

[0043] The assembly method of the above materials is as follows:

[0044] The first step: Fabrication

[0045] Fabricate one hanging bracket 1; as Figure 1 and Figure 5As shown, the hanger 1 is in the shape of a Chinese character "冂". Figure 1 As shown, the hook 2 is installed on the bottom surface of the top horizontal part of the hanger 1.

[0046] Make two first supporting legs 6 and two second supporting legs 11; Figure 1 and Figure 5 As shown, the square tube is cut into suitable lengths according to usage requirements to form the first supporting leg 6 and the second supporting leg 11.

[0047] Make a first crossbeam 7; Figure 1 and Figure 2 As shown, the square tube is cut into suitable lengths according to usage requirements to form the first crossbeam 7;

[0048] Make a second crossbeam 9; Figure 1 and Figure 2 As shown, the square tube is cut according to the length of the first cross beam 7 to form the second cross beam 9; Figure 4 As shown, threaded holes are provided at the centers of the first cross beam 7 and the second cross beam 9 , and the thread specifications are determined according to the thread matching of the screw rod 10 .

[0049] Make two fixing rings 3, such as Figure 1 and Figure 4 As shown, the fixing ring 3 is a semi-ring structure. Figure 1 and Figure 2 As shown, the front end of the fixing ring 3 is connected to a protrusion, such as Figure 7 As shown, a rectangular first groove communicating from top to bottom is provided at the vertical center of the protrusion.

[0050] Make two support rings 5, such as Figure 1 and Figure 4 As shown, the support ring 5 is a semi-ring structure. Figure 1 and Figure 2 As shown, the front end of the support ring 5 is connected to the same protrusion as that on the fixing ring 3, as shown in FIG. Figure 7 As shown, a rectangular second groove is provided at the vertical center top of the protrusion, the right side wall of the second groove is open, and the lower end of the screw rod of the second bolt 4 is hinged in the second groove of the support ring 5.

[0051] Step 2: Assembly

[0052] like Figure 1 and Figure 5 As shown, the first cross beam 7 is hinged between the two first supporting legs 6 through a pivot, and the second cross beam 9 is hinged between the two second supporting legs 11 through a pivot; Figure 4 As shown, the support ring 5 is placed horizontally, and the tops of the first support legs 6 and the second support legs 11 are respectively hinged to the two sides of the bottom surface of the support ring 5 through pivots; Figure 3As shown, the screw rod 10 passes through the threaded holes of the first cross beam 7 and the second cross beam 9; a crank handle 8 is installed at the right end of the screw rod 10; the left end of the support ring 5 is hinged to the left end of the fixed ring 3 through a pivot, and the two form a circular ring. As Figure 1 shown, the bottoms of the left and right sides of the hanging bracket 1 are respectively fixed on the top of the fixed ring 3.

[0053] The usage instructions are as follows:

[0054] When in use, as Figure 6 shown, place the support ring 5 on the bottom surface of the natural gas pipeline, rotate the crank handle 8, and through the threaded fit of the screw rod 10 with the first cross beam 7 and the second cross beam 9, close the first cross beam 7 and the second cross beam 9, so that the support ring 5 is lifted upward to support the natural gas pipeline; it can be that rotating the screw rod 10 clockwise drives the first cross beam 7 and the second cross beam 9 to approach each other, reducing the opening and closing angle between the first support foot 6 and the second support foot 11, and rotating the screw rod 10 counterclockwise drives the first cross beam 7 and the second cross beam 9 to move away from each other, increasing the opening and closing angle between the first support foot 6 and the second support foot 11; it can also be that rotating the screw rod 10 clockwise drives the first cross beam 7 and the second cross beam 9 to move away from each other, increasing the opening and closing angle between the first support foot 6 and the second support foot 11, and rotating the screw rod 10 counterclockwise drives the first cross beam 7 and the second cross beam 9 to approach each other, reducing the opening and closing angle between the first support foot 6 and the second support foot 11.

[0055] Place the fixed ring 3 on the top surface of the natural gas pipeline, lock the fixed ring 3 and the support ring 5 through the bolt 4, and fix the sling passing through the ear of the pressure regulating valve to the hook 2;

[0056] Swing the two support feet at the bottom of the support ring 5 back and forth, so that the front and rear support feet form an "eight" - shaped structure to support the pipeline. The downward opening angle is adjusted according to the height of the pipeline, and after good support, it is locked through the adjustment component to prevent the support feet from swinging back and forth;

[0057] Then remove the connecting bolts between the natural gas pipeline and the pressure regulating valve, and replace the pressure regulating valve. When replacing a heavy - weight pressure regulating valve, a hoisting tool such as a chain block can be hung on the hook 2 for assistance.

[0058] Connect the pressure regulating valve to the top of the hanging bracket 1 through a sling, and then replace the pressure regulating valve. When replacing a relatively heavy - weight pressure regulating valve, when loosening the flange plates connecting the left and right ends of the pressure regulating valve to the pipeline, since the pressure regulating valve is unstable, it is easy for the pipelines on the left and right sides to shift. The support feet, the support ring 5, the fixed ring 3, and the hanging bracket 1 can fix the pipelines on both sides of the pressure regulating valve within the clamping space and are not easy to shift. The horizontal part at the top of the hanging bracket 1 can be used to hang the pressure regulating valve to prevent the pressure regulating valve from falling, saving manpower.

[0059] It can effectively solve the problem of the offset of the natural gas pipeline; by hoisting and fixing the pressure regulator with the hanger 1, the collapse of the pressure regulator can be prevented and the damage of the connecting bolts can be avoided. By using the small hoisting tool with the hook 2, not only the work efficiency can be improved but also the waste of human resources can be reduced.

Claims

1. A valve auxiliary replacement device for a natural gas transmission station, comprising a vertically arranged hanging bracket (1), characterized in that: The hanger (1) is in the shape of a Chinese character "冂", and the bottoms of the vertical parts on the left and right sides thereof are both connected to a fixing ring (3) in the shape of a semi-circular structure with an opening facing downwards, and a supporting ring (5) in the shape of a semi-circular structure with an opening facing upwards is provided at the bottom of the fixing ring (3), and a left-right embracing space is formed between the fixing ring (3) and the supporting ring (5), and the rear end of the fixing ring (3) is hinged to the rear end of the supporting ring (5), and the front end of the fixing ring (3) is detachably connected to the front end of the supporting ring (5) via a connecting piece; The bottom of the support ring (5) is hinged with two support feet that are spaced apart and arranged vertically in a front-to-back manner. The tops of the support feet are hinged on the support ring (5). The lower ends of the support feet can swing back and forth. Adjustment components are installed on the support feet for locking the lower ends of the support feet after swinging back and forth.

2. The natural gas transmission station valve auxiliary replacement device according to claim 1, characterized in that: The supporting feet comprise a first supporting foot (6) located at the front side and a second supporting foot (11) located at the rear side; A first crossbeam (7) is provided between the two first support legs (6) located at the front side, the left end of the first crossbeam (7) being hinged to the first support leg (6) on the left side, and the right end of the first crossbeam (7) being hinged to the first support leg (6) on the right side; A second crossbeam (9) is provided between the two second support legs (11) at the rear side, the left end of the second crossbeam (9) being hinged to the left second support leg (11), and the right end of the second crossbeam (9) being hinged to the right second support leg (11); The first cross beam (7) and the second cross beam (9) are arranged symmetrically in the front and rear direction. The first cross beam (7) and the second cross beam (9) are provided with threaded holes which are connected in the front and rear direction. Screw rods (10) which are threadedly matched are installed in the threaded holes.

3. The natural gas transmission station valve auxiliary replacement device according to claim 2, wherein: The left and right ends of the first cross beam (7) and the first supporting foot (6), as well as the left and right ends of the second cross beam (9) and the second supporting foot (11) are all hingedly connected via a pivot.

4. The valve auxiliary replacement device for natural gas transmission station according to claim 3, characterized in that: A rocker handle (8) is mounted on one end of the screw rod (10).

5. The valve auxiliary replacement device for natural gas transmission station according to claim 4, characterized in that: A hook (2) is installed on the horizontal portion at the top of the hanger (1).

6. The valve auxiliary replacement device for natural gas transmission station according to claim 5, wherein: The connecting member is a bolt, and corresponding bolts are fixed with protrusions on the fixing ring (3) and the supporting ring (5); A first groove with an opening facing forward and communicating with each other from top to bottom is provided on the convex block corresponding to the fixing ring (3); A second groove with an opening at the right end is provided at the top of the protrusion corresponding to the support ring (5); the lower end of the screw rod of the bolt is hinged in the second groove, and the upper end can swing up and down, and after swinging upward, passes through the first groove.

7. The valve auxiliary replacement device for natural gas transmission station according to claim 6, characterized in that: The bolt (4) is a butterfly bolt.

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