Cathode protection device for urban gas pipeline

Abstract

The utility model discloses a cathode protection device for an urban gas pipeline, which relates to the technical field of pipeline protection and comprises two protection plates arranged side by side, the closer ends of the two protection plates are movably connected through a hinge, the inner structures of the two protection plates are the same, and the left side surface and the right side surface of each protection plate are respectively and fixedly connected with a baffle. Movable plates are arranged at the positions, located on the sides of the baffles, of the left portion and the right portion of the inner side of the protection plate correspondingly, and air bags are fixedly connected to the positions, located between the corresponding baffles and the movable plates, of the left portion and the right portion in the protection plate correspondingly and used for clamping a gas pipeline; each air inlet pipe penetrates through a round opening formed in the protection plate and extends to the lower side of the outer portion of the protection plate, an opening and closing valve is installed in each air inlet pipe, each movable plate is rotationally connected with the inward end of a first screw through a bearing, and each first screw is in threaded connection with a screw hole formed in the baffle on the corresponding side. And the aperture of the protective shell is adjusted by adopting the air bag, so that the waterproof performance is ensured while the aperture size is adjusted according to actual conditions.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline protection, in particular to a cathode protection device for a city gas pipeline. Background Art

[0002] Sacrificial anode protection (English name sacrificial anode) is also known as sacrificial anode protection method; it is a method of preventing metal corrosion by using the principle of the primary battery. The specific method is to use a metal with strong reducing properties as a protective electrode, connected to the protected metal to form a primary battery. The metal with strong reducing properties will be sacrificed and consumed as the negative electrode in the oxidation-reduction reaction, and the protected metal will be used as the positive electrode to avoid corrosion. This method consumes and sacrifices the metal as the anode (the negative electrode of the primary battery) to protect the cathode (the positive electrode of the primary battery) metal. In layman's terms, it uses the corrosion of the anode metal to protect the cathode metal and slow down the corrosion.

[0003] After the wiring is completed, the existing protection device uses a waterproof tape coil to protect the coil, but the winding of the waterproof tape is too time-consuming, and it needs to be completely opened during maintenance and repair, which is too troublesome. The waterproof tape is also limited by its material and cannot protect against possible impacts. The current better solution is to protect the coil with a hard shell, but the size of the hard shell often cannot be adjusted according to the size of the pipeline and needs to be replaced frequently. For this reason, we propose a cathodic protection device for urban gas pipelines. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a cathodic protection device for urban gas pipelines. An air bag is used to adjust the caliber of the protective shell, so that the caliber size can be adjusted according to actual conditions while ensuring waterproof performance, which can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cathodic protection device for a city gas pipeline, comprising a protection plate, two protection plates are arranged side by side, the two protection plates are movably connected by a hinge at one end that is closer to each other, the two protection plates have the same internal structure, the left and right side surfaces of the protection plates are respectively fixedly connected to the baffle, the left and right parts of the inner side of the protection plate are located at the side positions of the baffle and movable plates are respectively arranged, the left and right parts of the inner side of the protection plate are located between the corresponding baffle and the movable plate and are respectively fixedly connected to air bags, the air bags are used to clamp the gas pipeline, each air bag is respectively connected to the intake pipe, each intake pipe respectively passes through the circular opening opened on the protection plate and extends to the outer lower side of the protection plate, an opening and closing valve is respectively installed in each intake pipe, each movable plate is respectively rotatably connected to the inward end of a screw rod 1 through a bearing, each screw rod 1 is respectively threadedly connected to the screw hole opened on the baffle on the corresponding side, the outward end of each screw rod 1 passes through the screw hole and extends to the left and right parts of the outer side of the protection plate, and is respectively fixedly connected to a knob.

[0006] Two protective plates are designed, so that a protective shell is formed by the two protective plates, so that the coil is protected by the protective shell, which is safer than tape. An airbag is designed, so that the gas pipeline is clamped by an inflated airbag, so that the diameter of the protective shell can be adjusted based on the diameter of the gas pipeline, which is more practical. The airbag can be fixed to the surface of the gas pipeline, reduce gaps, and improve waterproof performance. An adjustable movable plate is designed, so that when the gas pipeline is thin, the airbag can be pressed to expand by adjusting the movable plate, thereby further reducing the size, so that the practical range is wider. When the control device is working, the cathodic protection coil is first arranged on the gas pipeline, and the two protective plates are controlled to clamp the gas pipeline and then buckled, and then the opening and closing valve is controlled to open, and then the airbag is restarted by the air pump until the two corresponding airbags above and below clamp the gas pipeline. When the gas pipeline is too thin, the knob is turned by hand to drive the screw to rotate, thereby driving the movable plate to approach the corresponding airbag, thereby forcing the airbag to actively expand toward the center.

[0007] Furthermore, the cathode protection device also includes a slide groove, and the slide grooves are respectively opened on the left and right parts of the inner surface of the protection plate, and the lower end of each movable plate is fixedly connected to a slider, and each slider is slidably connected to the corresponding slide groove.

[0008] The slide groove is designed to reduce the friction generated by the movement of the movable plate, thereby increasing the service life of the parts.

[0009] Furthermore, the cathode protection device also includes a fixing plate, the left and right parts of the lower surfaces of the two protection plates are respectively fixedly connected to the fixing plates, the ends of the front and rear corresponding fixing plates that are farther apart are respectively fixedly connected to the connecting plates, and the two front and rear corresponding connecting plates are respectively fixedly connected by fixing bolts.

[0010] When the two protection plates are buckled together, turn the fixing bolts to fix the two protection plates.

[0011] Furthermore, the cathode protection device also includes a fixing box, and the right part of the lower surface of the front protection plate is fixedly connected to the fixing box, and a wiring hole connected to the inside of the protection plate is opened in the fixing box. A clamping plate is arranged in the fixing box, and the clamping plate is rotatably connected to the rear end of the second screw through a bearing. The second screw is threadedly connected to the screw hole opened at the corresponding position on the fixing box, and the rear end of the second screw extends through the screw hole to the outside of the fixing box and is fixedly connected to the handle.

[0012] A fixing box is designed so that the sacrificial anode metal block can be fixed through the fixing box. When the sacrificial anode metal block is fixed, the sacrificial anode metal block is first placed in the fixing box, and then the handle is turned to drive the second screw to rotate, thereby driving the clamping plate to clamp the sacrificial anode metal.

[0013] Furthermore, the cathode protection device also includes a sealing strip, which is laterally fixedly connected to the front portion of the upper surface of the front protection plate, and the sealing strip is cooperatively connected to a sealing groove opened at a corresponding position on the rear protection plate.

[0014] The sealing strip is designed so that waterproof sealing can be achieved through the cooperation of the sealing strip and the sealing groove.

[0015] Compared with the prior art, the beneficial effects of the utility model are: the cathodic protection device for the city gas pipeline has the following advantages:

[0016] 1. Design two protective plates to form a protective shell, so that the coil can be protected by the protective shell, which is safer than tape;

[0017] 2. Design an airbag, so that the gas pipeline can be clamped by an inflated airbag, so that the diameter of the protective shell can be adjusted according to the diameter of the gas pipeline, which is more practical. By using the airbag to fix it, it can be close to the surface of the gas pipeline, reduce gaps, and improve waterproof performance;

[0018] 3. Design an adjustable position movable plate, so that when the gas pipeline is thin, the movable plate can be adjusted to compress the airbag to expand, thereby further reducing the size and making the practical range wider. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the bottom structure of the utility model;

[0021] Figure 3 It is a side structural schematic diagram of the utility model.

[0022] In the figure: 1 protection plate, 2 baffle, 3 movable plate, 4 airbag, 5 intake pipe, 6 screw rod 1, 7 knob, 8 slide groove, 9 fixing plate, 10 connecting plate, 11 fixing bolt, 12 fixing box, 13 clamping plate, 14 screw rod 2, 15 sealing strip. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-3The present embodiment provides a technical solution: a cathodic protection device for a city gas pipeline, comprising a protection plate 1, two protection plates 1 are arranged side by side, and the two protection plates 1 are movably connected by a hinge at one end that is closer to each other. The two protection plates 1 have the same internal structure, and the left and right side surfaces of the protection plate 1 are respectively fixedly connected to the baffle 2, and the left and right parts of the inner side of the protection plate 1 are located at the side of the baffle 2 and are respectively provided with movable plates 3, and the left and right parts of the inner side of the protection plate 1 are located between the corresponding baffle 2 and the movable plate 3 and are respectively fixedly connected with air bags 4, and the air bags 4 are used to clamp the gas pipeline, and each air bag 4 is respectively connected to the intake pipe 5, and each intake pipe 5 respectively passes through the circular opening opened on the protection plate 1 and extends to the lower side of the outer side of the protection plate 1, and an opening and closing valve is respectively installed in each intake pipe 5, and each movable plate 3 is respectively rotatably connected to the inward end of the screw rod 1 6 through a bearing, and each screw rod 1 6 is respectively threadedly connected to the screw hole opened on the baffle 2 on the corresponding side, and the outward end of each screw rod 1 6 passes through the screw hole and extends to the left and right parts of the outer side of the protection plate 1, and is respectively fixedly connected to the knob 7.

[0025] Two protective plates 1 are designed, so that a protective shell is formed by the two protective plates 1, so that the coil is protected by the protective shell, which is safer than the tape. An airbag 4 is designed, so that the inflated airbag 4 is used to clamp the gas pipeline, so that the diameter of the protective shell can be adjusted based on the diameter of the gas pipeline, which is more practical. The airbag 4 is fixed to the surface of the gas pipeline, reducing gaps and improving waterproof performance. An adjustable movable plate 3 is designed, so that when the gas pipeline is thin, the airbag 4 is pressed to expand by adjusting the movable plate 3, so as to further reduce the size, so as to make the practical range wider. When the control device is working, the cathode protection coil is first arranged on the gas pipeline, and the two protective plates 1 are controlled to clamp the gas pipeline and then buckled, and then the opening and closing valve is controlled to open, and then the airbag 4 is restarted by the air pump until the two corresponding airbags 4 above and below clamp the gas pipeline. When the gas pipeline is too thin, the knob 7 is turned by hand to drive the screw 6 to rotate, thereby driving the movable plate 3 to approach the corresponding airbag 4, thereby forcing the airbag 4 to actively expand toward the center.

[0026] The cathode protection device further comprises a slide groove 8 . The slide grooves 8 are respectively provided on the left and right parts of the inner surface of the protection plate 1 . The lower end of each movable plate 3 is respectively fixedly connected to a slider, and each slider is respectively slidably connected to the corresponding slide groove 8 .

[0027] The slide groove 8 is designed to reduce the friction force generated by the movement of the movable plate 3, thereby increasing the service life of the parts.

[0028] The cathode protection device also includes a fixing plate 9. The left and right parts of the lower surfaces of the two protection plates 1 are fixedly connected to the fixing plates 9 respectively. The ends of the front and rear corresponding fixing plates 9 that are farther apart are fixedly connected to the connecting plates 10 respectively. The two front and rear corresponding connecting plates 10 are fixedly connected by fixing bolts 11 respectively.

[0029] When the two protection plates 1 are buckled together, screw the fixing bolt 11 to fix the two protection plates 1.

[0030] The cathode protection device also includes a fixing box 12, and the right part of the lower surface of the front protection plate 1 is fixedly connected to the fixing box 12. A wiring hole connected to the inside of the protection plate 1 is opened in the fixing box 12. A clamping plate 13 is arranged in the fixing box 12. The clamping plate 13 is rotatably connected to the rear end of the screw rod 14 through a bearing. The screw rod 14 is threadedly connected to the screw hole opened at the corresponding position on the fixing box 12. The rear end of the screw rod 14 extends through the screw hole to the outside of the fixing box 12 and is fixedly connected to the handle.

[0031] The fixing box 12 is designed so that the sacrificial anode metal block can be fixed by the fixing box 12. When the sacrificial anode metal block is fixed, the sacrificial anode metal block is first placed into the fixing box 12, and then the handle is turned to drive the screw rod 14 to rotate, thereby driving the clamping plate 13 to clamp the sacrificial anode metal.

[0032] The cathode protection device further comprises a sealing strip 15 , which is laterally fixedly connected to the front portion of the upper surface of the front protection plate 1 , and the sealing strip 15 is matched and connected with a sealing groove provided at a corresponding position on the rear protection plate 1 .

[0033] The sealing strip 15 is designed so that waterproof sealing work is performed through the cooperation between the sealing strip 15 and the sealing groove.

[0034] The working principle of a cathodic protection device for a city gas pipeline provided by the utility model is as follows:

[0035] First, arrange the cathodic protection coil on the gas pipeline, control the two protection plates 1 to clamp the gas pipeline and then buckle them, turn the fixing bolt 11 to fix the two protection plates 1, and then restart the air bag 4 through the air pump until the two corresponding air bags 4 above and below clamp the gas pipeline. When the gas pipeline is too thin, turn the knob 7 by hand to drive the screw 1 6 to rotate, thereby driving the movable plate 3 to approach the corresponding air bag 4, thereby forcing the air bag 4 to actively expand toward the center, put the sacrificial anode metal block into the fixing box 12, and then turn the handle to drive the screw 2 14 to rotate, thereby driving the clamping plate 13 to clamp the sacrificial anode metal, and then connect the coil to the sacrificial anode metal.

[0036] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A cathodic protection device for a city gas pipeline, characterized in that: The invention comprises a protective plate (1), two protective plates (1) are arranged side by side, the two protective plates (1) are movably connected by a hinge at one end which is closer to each other, the two protective plates (1) have the same internal structure, the left and right side surfaces of the protective plates (1) are respectively fixedly connected to the baffle plate (2), the left and right parts of the inner side of the protective plate (1) are located at the side of the baffle plate (2), and the movable plates (3) are respectively arranged, and the left and right parts of the inner side of the protective plate (1) are located between the corresponding baffle plate (2) and the movable plate (3) and are respectively fixedly connected to the airbag (4), the airbag (4) is used to clamp the gas pipeline, and each airbag ( 4) respectively connected to the air intake pipes (5), each air intake pipe (5) respectively passes through the circular opening on the protective plate (1) and extends to the outer lower side of the protective plate (1), each air intake pipe (5) is respectively installed with an opening and closing valve, each movable plate (3) is respectively rotatably connected to the inward end of the screw rod (6) through a bearing, each screw rod (6) is respectively threadedly connected to the screw hole on the baffle (2) on the corresponding side, and the outward end of each screw rod (6) passes through the screw hole and extends to the left and right parts of the outer side of the protective plate (1), and is respectively fixedly connected to the knob (7).

2. A cathodic protection device for a city gas pipeline according to claim 1, characterized in that: The cathode protection device further comprises a slide groove (8), wherein the slide grooves (8) are respectively provided on the left and right parts of the inner surface of the protection plate (1), and the lower end of each movable plate (3) is respectively fixedly connected to a sliding block, and each sliding block is respectively slidably connected to the corresponding slide groove (8).

3. A cathodic protection device for a city gas pipeline according to claim 1, characterized in that: The cathode protection device further comprises a fixing plate (9), the left and right parts of the lower surfaces of the two protection plates (1) are respectively fixedly connected to the fixing plate (9), the ends of the front and rear corresponding fixing plates (9) which are farther apart are respectively fixedly connected to the connecting plate (10), and the two front and rear corresponding connecting plates (10) are respectively fixedly connected via fixing bolts (11).

4. A cathodic protection device for a city gas pipeline according to claim 1, characterized in that: The cathode protection device further comprises a fixing box (12), the lower right side of the front protection plate (1) being fixedly connected to the fixing box (12), a wiring hole being provided in the fixing box (12) and connected to the inside of the protection plate (1), a clamping plate (13) being arranged in the fixing box (12), the clamping plate (13) being rotatably connected to the rear end of the second screw rod (14) via a bearing, the second screw rod (14) being threadedly connected to a screw hole provided at a corresponding position on the fixing box (12), the rear end of the second screw rod (14) extending through the screw hole to the outside of the fixing box (12) and being fixedly connected to a handle.

5. A cathodic protection device for a city gas pipeline according to claim 1, characterized in that: The cathode protection device further comprises a sealing strip (15), the front portion of the upper surface of the front protection plate (1) being laterally fixedly connected to the sealing strip (15), the sealing strip (15) being cooperatively connected to a sealing groove provided at a corresponding position on the rear protection plate (1).

Images