Integral type anti-corrosion fuel gas through-wall pipe

Abstract

The utility model discloses an integral type anti-corrosion fuel gas through-wall pipe, and belongs to the technical field of fuel gas leading-in pipeline through-wall. The utility model relates to a wall-penetrating protection device which comprises a gas leading-in pipe, the outer side of the gas leading-in pipe is sleeved with a wall-penetrating protection sleeve, the two sides of the gas leading-in pipe are each provided with a wall decoration cover in a penetrating mode, the wall decoration covers are connected with the ends, on the corresponding sides, of the wall-penetrating protection sleeve, and waterproof centering rubber rings are arranged between the two ends of the wall-penetrating protection sleeve and the corresponding wall decoration covers. According to the utility model, the waterproof centering rubber ring is adopted to fix the gas introduction pipe and the through-wall protection sleeve, so that the centering and waterproof effects are achieved, and the adverse effects of wall settlement and wall vibration on the gas introduction pipe can be effectively eliminated; the wall-penetrating protection sleeve adopts a PVC plastic pipeline with spiral convex ribs on the outer surface, so that the hanging and attaching capacity of cement is improved, hollowing is effectively reduced, and the wall-penetrating protection sleeve is more compression-resistant and impact-resistant; the external decorative cover is tightly attached to the wall in an outer sleeve mode, and the attractiveness can be improved on the basis of preventing water from permeating.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas introduction pipeline wall penetration, and particularly relates to an integral corrosion-preventive gas wall penetration pipe. Background Art

[0002] Indoor gas inlet pipes are closely linked to the safety of users' lives and property. Early designs for indoor gas inlet pipes were characterized by low craftsmanship and corrosion protection. Furthermore, these pipes, located through walls (or floors) of balconies or kitchen walls, are exposed to high humidity and temperatures. Moisture easily penetrates and adheres to the metal surface and casing of these pipes, rapidly corroding the pipes and causing perforations. Gas leaks and explosions due to corrosion are common occurrences. Therefore, minimizing corrosion in these pipes is a key anti-corrosion priority for gas companies.

[0003] Currently, most gas wall-penetrating pipes are manufactured on-site. Construction workers cut a section of galvanized steel pipe, wrap it with cold-wrap anti-corrosion tape or heat-shrink sleeves, and then install it through a steel casing in the wall hole. This process has the following disadvantages:

[0004] 1. There are high requirements for the skills of construction workers;

[0005] 2. There may be a lack of strict and effective construction quality control procedures during construction;

[0006] 3. After the cold-wrap anti-corrosion tape is wrapped, the two ends are generally not fixed. Because the adhesiveness of the tape is closely related to the temperature, it will gradually loosen or even fall off after winter, and the anti-corrosion performance will decrease;

[0007] 4. Steel pipes generally need to be threaded. Whether it is done before or after anti-corrosion, it is not conducive to the anti-corrosion operation or anti-corrosion effect;

[0008] 5. There will be many irregularities in the installation of the steel casing, such as no casing, the wall pipe is not centered, the gap is not filled enough, etc. Utility Model Content

[0009] In view of the above problems existing in the prior art, the purpose of the present invention is to provide an integral anti-corrosion gas wall-penetrating pipe, which has better anti-corrosion effect, can avoid wall stress, has a longer service life, and has a beautiful appearance.

[0010] The utility model provides the following technical solutions: an integral anti-corrosion gas wall-penetrating pipe, comprising a gas inlet pipe, a wall-penetrating protective sleeve being sleeved on the outer side of the gas inlet pipe, wall decorative covers being sleeved on both sides of the gas inlet pipe, the wall decorative covers being connected to the ends of the wall-penetrating protective sleeves on the corresponding sides, and waterproof centering rubber rings being provided between the two ends of the wall-penetrating protective sleeves and the corresponding wall decorative covers.

[0011] Furthermore, the gas inlet pipe includes a steel pipe body and an anti-corrosion layer structure arranged on the outside of the steel pipe body.

[0012] Furthermore, foam glue is filled between the gas inlet pipe and the wall protection sleeve.

[0013] Furthermore, the wall decoration cover includes an annular connecting portion and a decoration portion located on one side of the connecting portion; the end of the wall-penetrating protective sleeve is inserted into the connecting portion and connected to the connecting portion.

[0014] Furthermore, the waterproof centering rubber ring is arranged on the outside of the gas inlet pipe, which is located in the connecting part, with one side thereof tightly attached to the decorative part and the other side in contact with the insertion end of the wall protection sleeve.

[0015] Furthermore, the waterproof centering rubber ring is provided with a sealing surface for being squeezed and deformed by contact with the wall-penetrating protective sleeve and a contact surface for being in contact with the end of the wall-penetrating protective sleeve.

[0016] Furthermore, the sealing surface is a curved smooth structure, and the contact surface is a vertical vertical structure.

[0017] Furthermore, a group of spiral pile rib structures are provided on the outer surface of the wall-penetrating protective sleeve.

[0018] By adopting the above technology, compared with the existing technology, the beneficial effects of the present invention are as follows:

[0019] 1) In this utility model, the gas inlet pipe is an integral 3PE anti-corrosion steel pipe, which is prefabricated in the factory and has excellent anti-corrosion performance, especially the port is not easy to fall off and difficult to get water in;

[0020] 2) In this utility model, a waterproof centering rubber ring is used to fix the gas inlet pipe to the wall protection sleeve, which plays a centering and waterproofing role and can effectively eliminate the adverse effects of wall settlement and wall vibration on the gas inlet pipe;

[0021] 3) In this utility model, the wall protection sleeve adopts PVC plastic pipe with spiral raised ribs on the outer surface. The material is non-corrosive, flame-retardant and insulating. The structure of the outer surface increases the cement adhesion ability, effectively reduces hollowing, and is more resistant to pressure and impact.

[0022] 4) In the present invention, the external decorative cover is provided in a jacket-like manner close to the wall, which can improve the aesthetics while preventing water infiltration. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 This is a schematic diagram of the assembly structure of the wall-penetrating pipe of the utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the gas inlet pipe of the utility model;

[0026] Figure 4 This is a schematic structural diagram of the wall decoration cover of the utility model;

[0027] Figure 5 This is a schematic diagram of the assembly structure of the waterproof centering rubber ring of the utility model;

[0028] Figure 6 This is a schematic structural diagram of the waterproof centering rubber ring of the utility model;

[0029] Figure 7 This is a structural diagram of the wall-penetrating protective sleeve of the present utility model. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0031] Rather, the present invention encompasses any alternatives, modifications, equivalents, and solutions within the spirit and scope of the present invention as defined by the claims. Furthermore, to facilitate a better understanding of the present invention, certain specific details are detailed below in the detailed description of the present invention. Those skilled in the art will be able to fully understand the present invention without these details.

[0032] See also Figure 1-7 An integral anti-corrosion gas wall-penetrating pipe comprises a gas inlet pipe 1, a wall-penetrating protective sleeve 2, a waterproof centering rubber ring 3 and a wall decorative cover 4; the wall-penetrating protective sleeve 2 is sleeved on the outside of the gas inlet pipe 1, and two wall decorative covers 4 are respectively installed on both sides of the gas inlet pipe 1.

[0033] The wall decoration cover 4 includes a connecting portion 401 and a decoration portion 402 . The connecting portion 401 is an annular structure, and the decoration portion 402 is arranged on the outside of the connecting portion 401 .

[0034] The two ends of the wall-penetrating protective sleeve 2 are respectively inserted into the connecting portion 401 on the corresponding side and connected to the wall decoration cover 4. The waterproof centering rubber ring 3 is arranged between the end of the wall-penetrating protective sleeve 2 and the wall decoration cover 4.

[0035] Specifically, the gas inlet pipe 1 is a radiation-crosslinked 3PE anti-corrosion steel pipe with prefabricated threads in the factory; it includes a steel pipe and a 3PE anti-corrosion layer structure arranged on the outside of the steel pipe, and the 3PE anti-corrosion layer structure includes:

[0036] The anti-corrosion layer has high adhesion to the internal bare steel pipe, is resistant to peeling, and has better anti-corrosion performance; they are fusion-bonded epoxy powder coating a, adhesive layer b and radiation cross-linked polyethylene layer c; fusion-bonded epoxy powder layer a has excellent anti-corrosion effect, but is not resistant to bumps; adhesive layer b has the function of preventing water vapor penetration; radiation cross-linked polyethylene layer c has good mechanical properties and is resistant to bumps, and after radiation cross-linking, the polyethylene has a certain shape memory function and is more weather-resistant. When the anti-corrosion layer is damaged to a certain extent, such as being pinched when tightening threads or bumped during transportation, it will automatically return to its original state after heating.

[0037] Specifically, a smooth arc-shaped sealing surface 301 is provided on the inner side of the waterproof centering rubber ring 3, which is compressed and deformed by the wall-penetrating protective sleeve 2 and sealed but not cut; a contact surface 302 is provided on the outer side, which is a vertical surface structure and can effectively contact the end of the wall-penetrating protective sleeve 2, thereby preventing the end face of the sleeve from being corroded and preventing water vapor from entering the interior.

[0038] The waterproof centering rubber ring 3 has a centering function. The inner diameter of the rubber ring is used to fix the gas inlet pipe 1 so that the gas inlet pipe 1 passing through it is centered. In normal use, the gas inlet pipe 1 is located in the middle of the wall protection sleeve, playing the following roles:

[0039] (1) When the wall settles to a certain extent, the deformation of the waterproof centering rubber ring 3 reduces the stress on the nearby welding joints and threaded joints; when the wall vibrates, it also prevents the surface friction damage of the anti-corrosion layer of the gas inlet pipe 1, which would cause the loss of anti-corrosion effect. For example, when the wall is demolished during renovation of a rough house, it will cause the wall to vibrate, which will have a certain impact on the gas wall pipe in the kitchen.

[0040] (2) On the other hand, the contact surface between the gas inlet pipe 1 and the wall 6 is naturally insulated, thereby reducing and eliminating the impact of electrochemical corrosion on the surface of the steel pipe.

[0041] Specifically, the wall protection sleeve 2: Since the corrosion of steel pipes by construction cement mortar is very serious, it is very necessary to add a sleeve to protect the gas pipeline through the wall. However, the steel sleeve is still susceptible to corrosion. It will fail due to corrosion in two to three years or as long as twenty years. In this embodiment, the wall protection sleeve 2 adopts a PVC plastic pipe with spiral ribs on the outer surface, which has the following material advantages and structural advantages:

[0042] (1) The material is U-PVC (i.e. hard PVC). The advantages of this material are low cost, strong corrosion resistance, good flame retardancy, automatic extinguishing when away from fire, and the fire will not spread along the pipe (especially when used in wall sleeves, it can prevent the fire from being transmitted to the next room), strong insulation and not easy to age;

[0043] (2) The outer surface has spiral ribs, which function as follows:

[0044] a. Effectively enhance the adhesion capacity of backfill cement and effectively reduce hollowing phenomenon; the outer surface of ordinary pipes is relatively smooth, and cement mortar and other materials are not easy to adhere to the pipe, which will increase the difficulty of filling work, and before the cement solidifies, it will slide down to the bottom of the casing, causing hollowing of the upper part of the casing;

[0045] b. The raised ribs are spiral, which is more resistant to pressure and impact. Unlike ordinary pipes, they will not crack longitudinally when under pressure.

[0046] Specifically, the decorative wall cover 4 has the primary function of covering the wall hole and providing a decorative effect. Made of a yellow, weather-resistant material, it is not only weather-resistant and sun-resistant, but also serves as a warning (identifying the gas pipeline). Four internal fixing ribs strengthen the tight fit with the wall-penetrating protective sleeve 2. The skirt of the decorative wall cover 4 fits tightly against the wall, fitting over the wall-penetrating protective sleeve 2 in a jacket-like manner. Water flowing down the wall will flow directly away, avoiding stagnation in the gap.

[0047] It is made of UPVC material and can be connected with PVC glue to achieve permanent connection with the wall protection sleeve without loosening or falling off.

[0048] The construction process of the wall-penetrating pipe in this embodiment is as follows:

[0049] S1. Drill holes in the wall or reserve holes in advance. The drilling angle should be in accordance with the specifications and perpendicular to the wall.

[0050] S2. Insert the wall-penetrating protective sleeve 2 into the wall hole and fill the gap between the sleeve and the wall with waterproof material (usually cement mortar or foam glue); both ends of the sleeve should be flush with the wall surface, the sleeve must be installed vertically and in a horizontal state during installation; a waterproof filler 7 can be set between the wall-penetrating protective sleeve 2 and the wall hole.

[0051] S3. Install the integral gas inlet pipe 1 with the waterproof centering rubber ring 3 on one side into the wall protection sleeve 2. The gas inlet pipe 1 and the wall protection sleeve 2 are coaxially arranged, and the lengths on both sides are reserved as required; the waterproof centering rubber ring 3 should be installed in place and stuck in the port of the sleeve.

[0052] S4. The gap between the wall protection sleeve 2 and the gas inlet pipe 1 is sealed and filled with a foam glue 5 which has good sealing performance and is easy to construct.

[0053] S5. Install the waterproof centering rubber ring 2 on the other side.

[0054] S6. After the wall is painted or tiled, the wall decoration cover 4 is passed through the gas inlet pipe 1 and inserted into the hole opened on the wall 6. The inner side of the connecting part 401 is coated with PVC glue and connected to the wall protection sleeve 2. The inner side of the decorative part 402 is close to the wall.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An integral anti-corrosion gas wall-penetrating pipe, characterized in that: The invention comprises a gas inlet pipe (1), the outer side of the gas inlet pipe (1) is provided with a wall-penetrating protective sleeve (2), both sides of the gas inlet pipe (1) are provided with wall-surface decorative covers (4), the wall-surface decorative covers (4) are connected to the ends of the wall-penetrating protective sleeve (2) on the corresponding side, and waterproof centering rubber rings (3) are provided between the two ends of the wall-penetrating protective sleeve (2) and the corresponding wall-surface decorative covers (4).

2. The integral anti-corrosion gas wall-penetrating pipe according to claim 1, characterized in that: The gas inlet pipe (1) comprises a steel pipe body and an anti-corrosion layer structure arranged on the outside of the steel pipe body.

3. The integral anti-corrosion gas wall-penetrating pipe according to claim 1, characterized in that: The space between the gas inlet pipe (1) and the wall-penetrating protective sleeve (2) is filled with foam glue (5).

4. The integral anti-corrosion gas wall-penetrating pipe according to claim 3, characterized in that: The wall decoration cover (4) comprises an annular connecting portion (401) and a decoration portion (402) located on one side of the connecting portion; the end of the wall-penetrating protective sleeve (2) is inserted into the connecting portion (401) and connected to the connecting portion (401).

5. The integral anti-corrosion gas wall-penetrating pipe according to claim 4, characterized in that: The waterproof centering rubber ring (3) is sleeved on the outside of the gas inlet pipe (1) and is located inside the connecting portion (401). One side of the ring is in close contact with the decorative portion (402) and the other side is in contact with the insertion end of the wall protection sleeve (2).

6. The integral anti-corrosion gas wall-penetrating pipe according to claim 5, characterized in that: The waterproof centering rubber ring (3) is provided with a sealing surface (301) that contacts and deforms the wall-penetrating protective sleeve (2) through extrusion, and a contact surface (302) that contacts the end of the wall-penetrating protective sleeve (2).

7. The integral anti-corrosion gas wall-penetrating pipe according to claim 6, characterized in that: The sealing surface (301) is a curved smooth structure, and the contact surface (302) is a vertical vertical structure.

8. The integral anti-corrosion gas wall-penetrating pipe according to claim 1, characterized in that: The outer surface of the wall-penetrating protective sleeve (2) is provided with a group of spiral pile rib structures.

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