Pipeline component, preparation method and pipe network with the same

Abstract

The present invention provides a pipe component, a preparation method, and a pipe network incorporating the pipe component. These components relate to the field of radiation-resistant pipe processing technology, with the primary objective being to provide a novel, environmentally friendly pipe component with low processing costs. The pipe component comprises a component body and an inner coating located on the inner sidewall of the component body, the inner coating providing radiation protection. The inner coating is a barium sulfate cement coating with a thickness of no less than 20 mm. The component body comprises a water pipe and at least one of a joint, a clamp, an elbow, and a tee. The pipe network comprises at least one of the aforementioned pipe components. The present invention is applicable to drainage pipe networks and other related structures.

Description

Technical Field

[0001] The present invention relates to the technical field of radiation-proof pipeline processing, and in particular to a pipeline component, a preparation method and a pipeline network with the pipeline component. Background Art

[0002] Hospitals, for treatment and diagnosis, often perform tests or treatments that involve radiation, which inevitably generate radioactive wastewater. To prevent radioactive wastewater from contaminating other wastewater or water, separate drainage pipes with radiation shielding are required. If water supply or drainage pipes pass through radiation testing or radiotherapy rooms, radiation can also contaminate the water within these pipes. To prevent this, radiation shielding pipes are also required. Currently, radiation shielding drainage pipes used in hospitals are typically cast iron pipes covered with a lead metal sheet at least 2mm thick to prevent contamination from X-rays and gamma rays.

[0003] The applicant has found that the existing technology has at least the following technical problems: although lead metal has the effect of radiation protection, it is also harmful to the environment. At the same time, the cost of lead metal and the installation cost are both high.

[0004] In order to solve the above problems, it is necessary to develop a new type of lead-free pipe component, a preparation method and a pipe network structure with the pipe component. Summary of the Invention

[0005] The present invention aims to provide a pipe component, a method for manufacturing the pipe component, and a pipe network incorporating the pipe component to address the environmental hazards and high cost of conventional radiation shielding pipes made of lead metal. The various technical advantages achieved by the preferred technical solution among the various technical solutions provided by the present invention are detailed below.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] The pipeline component provided by the present invention includes a component body and an inner coating located on the inner sidewall of the component body, wherein the inner coating has a radiation protection function. The inner coating located within the component body imparts radiation protection to the pipeline component, enabling its use in environments with radiation or for transporting radioactive substances.

[0008] On the basis of the above technical solution, the present invention can also be improved as follows.

[0009] As a further improvement of the present invention, the inner coating is a barium sulfate cement coating and the thickness of the inner coating is not less than 20 mm.

[0010] This thickness can ensure that the inner coating has sufficient lead equivalent and good radiation resistance.

[0011] As a further improvement of the present invention, the component body is made of cast iron; the component body includes a water pipe.

[0012] As a further improvement of the present invention, the component body further comprises at least one or more of a joint, a clamp, an elbow and a tee. The sizes of the above component bodies are matched and can be assembled together.

[0013] As a further improvement of the present invention, the nominal diameter of the water pipe is 100 to 300 mm.

[0014] As a further improvement of the present invention, the thickness of the inner coating is 20 to 30 mm.

[0015] As a further improvement of the present invention, the thickness of the inner coating is 25 mm.

[0016] As a further improvement of the present invention, an outer coating is further provided on the outer side wall of the component body, the thickness of the outer coating is smaller than the thickness of the inner coating and the surface smoothness of the outer coating is greater than the surface smoothness of the inner coating.

[0017] In addition to serving as a supplement to the inner coating and further enhancing the radiation resistance of the component body, the outer coating can also make the exterior of the component body more beautiful.

[0018] As a further improvement of the present invention, the thickness of the outer coating layer is not less than 110 μm.

[0019] As a further improvement of the present invention, the outer coating comprises the following components in parts by weight:

[0020] 75-85 parts of barium sulfate ultrafine powder, 15-25 parts of epoxy resin.

[0021] As a further improvement of the present invention, the particle size of the ultrafine barium sulfate powder is no more than 10 μm.

[0022] As a further improvement of the present invention, the barium sulfate cement coating comprises the following components in parts by weight:

[0023] 35-40 parts barium sulfate coarse aggregate, 30-35 parts barium sulfate fine aggregate, 15-25 parts barium sulfate powder, 5-8 parts Portland cement, and 2-5 parts binder. The aggregate provides good support, the Portland cement helps increase the coating's setting rate, and the binder helps improve the coating's bonding strength and smoothness.

[0024] As a further improvement of the present invention, the barium sulfate cement coating comprises the following components in parts by weight:

[0025] 38 parts of barium sulfate coarse aggregate, 32 parts of barium sulfate fine aggregate, 20 parts of barium sulfate powder, 7.5 parts of Portland cement, and 2.5 parts of binder.

[0026] As a further improvement of the present invention, the binder includes at least one of glass fiber powder and construction adhesive. The glass fiber powder helps to improve the bonding strength and smoothness of the inner coating, and the construction adhesive can make the inner coating surface smoother.

[0027] As a further improvement of the present invention, the particle size of the barium sulfate coarse aggregate is 3-5 mm, the particle size of the barium sulfate fine aggregate is 1-3 mm, and the particle size of the barium sulfate powder is less than 75 μm.

[0028] As a further improvement of the present invention, the grade of the silicate cement is 42.5.

[0029] The present application also provides a method for preparing the above-mentioned pipeline component, comprising the following steps:

[0030] S1: preparing an inner coating by uniformly mixing the barium sulfate coarse aggregate, barium sulfate fine aggregate, barium sulfate powder, Portland cement, binder and water to form a paste or colloidal solution;

[0031] S2: evenly coating the solution prepared in step S1 on the inner side wall of the component body.

[0032] As a further improvement of the present invention, the coating method in step S2 is centrifugal coating or manual coating.

[0033] When the pipe component to be coated is a component with regular structure (such as a water pipe, etc.), it can be coated by centrifugal method to improve the processing efficiency. When its structure is irregular, it can be coated by manual coating.

[0034] As a further improvement of the present invention, the following steps are also included:

[0035] S3: preparing an outer coating by uniformly mixing the ultrafine barium sulfate powder, epoxy resin, and water to form a paste or colloidal solution;

[0036] S4: evenly coating the solution prepared in step S3 on the outer side wall of the component body.

[0037] As a further improvement of the present invention, there is no order between step S1 and step S3, and there is no order between step S2 and step S4.

[0038] As a further improvement of the present invention, step S5 is further included: after steps S2 and S4 are completed and any one of them is completed, the pipeline components are cured within 12 hours, the curing time is not less than 14 days, and the curing conditions are humidity not less than 65% and temperature not lower than 20°C.

[0039] This step can make the inner coating harden normally or accelerate its hardening and strength growth. The compressive strength of the inner coating finally obtained is not less than 25MPa.

[0040] The present application also provides a pipe network, comprising any one of the pipe components described above, wherein the number of the pipe component is at least one.

[0041] Compared to the prior art, preferred embodiments of the present invention provide a pipe component, a preparation method, and a pipe network incorporating the pipe component. The inner wall of the pipe component is provided with an inner coating with good radiation resistance, and the outer wall is provided with an outer coating of a certain thickness. The inner and outer coatings connect the multiple pipe components and form a pipe network structure. This pipe network structure can be used in environments such as hospitals that have radiation equipment installed and have corresponding emission requirements. Compared to traditional radiation-proof pipes, the pipe component and the corresponding pipe network eliminate traditional pipe fittings containing lead, reducing environmental damage while ensuring effective radiation protection and lowering product and construction costs. It also effectively improves the corrosion resistance of the pipe inner wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0043] Figure 1 This is a structural schematic diagram of the pipeline component of the present invention;

[0044] Figure 2 It is another structural schematic diagram of the pipeline component of the present invention;

[0045] Figure 3 This is a third structural schematic diagram of the pipeline component of the present invention;

[0046] Figure 4 This is a fourth structural schematic diagram of the pipeline component of the present invention;

[0047] Figure 5 It is a preparation flow chart of the pipeline component of the present invention.

[0048] In the figure: 1. Water pipe; 2. Joint; 3. Inner coating; 4. Outer coating. DETAILED DESCRIPTION

[0049] To make the objectives, technical solutions, and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other implementations obtained by those of ordinary skill in the art without inventive effort are within the scope of protection of the present invention.

[0050] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They 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 should not be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0051] It should also be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention depending on the specific circumstances.

[0052] Attachment Figure 1 Schematic diagram of the structure of the pipeline component of the present invention; it can be seen that the pipeline component includes a water pipe in a circular tube structure and an inner coating structure located on the inner wall of the water pipe.

[0053] Attachment Figure 2 is another structural schematic diagram of the pipeline component of the present invention; Figure 1 In comparison, the outer wall of the water pipe is also coated with an outer coating structure. It can be seen that the thickness of the outer coating is relatively thin.

[0054] Attachment Figure 3 is a third structural schematic diagram of the pipeline component of the present invention; Figure 1 compared to, Figure 3 The pipeline component is a joint structure, and the inner side wall of the joint structure is coated with an inner coating with radiation protection function.

[0055] Attachment Figure 4 is a fourth structural schematic diagram of the pipeline component of the present invention; Figure 3 In contrast, the outer side wall of the joint is now also coated with an outer coating structure.

[0056] Attachment Figure 5 1 is a flow chart of the preparation of the pipeline component of the present invention; the processing method of the above pipeline component is shown in the figure.

[0057] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings.

[0058] The pipeline component provided by the present invention comprises a component body and an inner coating 3 located on the inner sidewall of the component body. The inner coating 3 has a radiation protection function. The inner coating 3 located within the component body imparts radiation protection to the pipeline component, enabling its use in environments with radiation or for transporting radioactive substances. Furthermore, since the radiation-resistant coating is located on the inner sidewall of the component body, it effectively addresses the issue of susceptible corrosion of the inner sidewall of the component body.

[0059] As an optional embodiment, the inner coating 3 is a barium sulfate cement coating and the thickness of the inner coating 3 is not less than 20 mm.

[0060] The radiation resistance of a 10mm thick barium sulfate cement coating is comparable to that of a 1mm thick lead layer. Therefore, a barium sulfate cement coating with a thickness of at least 20mm can offer comparable radiation resistance to a 2mm thick lead layer. This thickness ensures that the inner coating 3 has sufficient lead equivalent, providing good radiation resistance.

[0061] As an optional embodiment, the component body is made of cast iron, and the graphite in the cast iron also has a certain radiation protection effect; the component body includes a water pipe 1, and the component body may also include at least one or more of a joint 2, a clamp, an elbow and a tee.

[0062] The joint 2 is a flange. As an optional embodiment, the water pipe 1 specifies the pipe component specifications based on the pipe diameter, and the nominal diameter of the component body is 100 to 300 mm.

[0063] Taking water pipe 1 as an example, the specific dimensions of the pipe components are shown in the following table:

[0064] Pipe component specifications (mm) Specifications of the main component (taking water pipe 1 as an example) (mm) Inner coating 3 thickness (mm) DN50 DN100 25 DN75 DN125 25 DN100 DN150 25 DN150 DN200 25 DN200 DN250 25 DN250 DN300 25

[0065] The pipeline component is suitable for conveying corresponding radioactive substances, and the radioactive substances can be in liquid or solid form (such as gravel, etc.).

[0066] Example 1:

[0067] The present invention provides a pipe component, which can be a water pipe 1 or at least one of a joint 2, a clamp, a gland, and a tee. The pipe component itself is made of cast iron, and its mechanical properties and dimensional requirements comply with the requirements of GB / T 12772-2016, "Cast Iron Pipes, Fittings, and Accessories with Flexible Joints for Drainage." In other words, the pipe component is a ductile iron pipe and other fittings with the same dimensions as the cast pipes and fittings specified in this standard.

[0068] Since the radiation resistance of the inner coating 3 with a thickness of 10 mm is equivalent to that of a 1 mm thick lead layer, in order to ensure that its radiation resistance can meet the requirements, the thickness of the inner coating 3 is set to be no less than 20 mm, thereby ensuring that the radiation resistance of the obtained pipeline component is no worse than that of a 2 mm thick lead metal layer.

[0069] As an optional embodiment, the thickness of the inner coating layer 3 is 20 to 30 mm.

[0070] As an optional embodiment, the thickness of the inner coating layer 3 is 25 mm.

[0071] As an optional embodiment, the barium sulfate cement coating comprises the following components in parts by weight:

[0072] 35-40 parts barium sulfate coarse aggregate, 30-35 parts barium sulfate fine aggregate, 15-25 parts barium sulfate powder, 5-8 parts Portland cement, and 2-5 parts binder. The aggregate provides good support, the Portland cement helps increase the coating's setting rate, and the binder helps improve the coating's bonding strength and smoothness.

[0073] Among the above components, barium sulfate aggregate accounts for about 70% and powder accounts for 30%. When preparing, just add appropriate amount of water and stir evenly.

[0074] Because barium silicate has a relatively high specific gravity, an appropriate amount of binder is added to the inner coating 3 to enhance its strength and prevent post-coating collapse. This increases adhesion and smoothness. Furthermore, the addition of the binder smoothes the coating's surface, improving its corrosion and weather resistance. The inner coating 3 also contains a certain amount of Portland cement, which helps increase its setting rate, addressing the issue of high barium sulfate content and difficulty setting, thereby increasing production efficiency.

[0075] Its structure is as follows Figure 1 and Figure 3 shown.

[0076] Specifically, the particle size of the selected barium sulfate coarse aggregate is 3-5 mm, the particle size of the barium sulfate fine aggregate is 1-3 mm, the particle size of the barium sulfate powder is less than 75 μm, and the grade of the silicate cement is 42.5.

[0077] As an optional embodiment, the binder includes at least one of glass fiber powder and construction adhesive. The glass fiber powder helps to improve the bonding strength and smoothness between the different wet materials of the inner coating 3, and the construction adhesive can make the inner coating 3 better adhere to the pipe wall and also make the coating surface smoother.

[0078] Example 2:

[0079] The difference between Example 2 and Example 1 is that the present invention provides a pipeline component, and the components of the inner coating 3 of the pipeline component are as follows:

[0080] As an optional embodiment, the inner coating 3 is a barium sulfate cement coating, comprising the following components in parts by weight:

[0081] 38 parts of barium sulfate coarse aggregate, 32 parts of barium sulfate fine aggregate, 20 parts of barium sulfate powder, 7.5 parts of Portland cement, and 2.5 parts of binder.

[0082] Example 3:

[0083] The difference between Example 3 and Example 1 is that the present invention provides a pipeline component, in which an outer coating 4 is further provided on the outer side wall of the component body, and the thickness of the outer coating 4 is smaller than that of the inner coating 3.

[0084] Generally speaking, the surface smoothness of the outer coating layer 4 is greater than that of the inner coating layer 3 .

[0085] In addition to supplementing the inner coating 3 and further enhancing the radiation resistance of the component body, the outer coating 4 can also make the exterior of the component body smoother and more beautiful, make the surface of the component body smoother, and have better wear resistance and weather resistance.

[0086] As an optional embodiment, the thickness of the outer coating 4 is not less than 110 μm. In addition to enhancing the radiation resistance of the pipeline component to a certain extent, the outer coating 4 structure can also help improve the surface finish and wear resistance of the pipeline component and improve its adaptability to the installation environment.

[0087] As an optional embodiment, the outer coating layer 4 includes the following components in parts by weight:

[0088] 75-85 parts of barium sulfate ultrafine powder, 15-25 parts of epoxy resin.

[0089] As an optional embodiment, the particle size of the ultrafine barium sulfate powder is not greater than 10 μm. Figure 2 and Figure 4 shown.

[0090] Taking water pipe 1 as an example, the specific dimensions of the pipe components are shown in the following table:

[0091]

[0092] Example 4:

[0093] The present invention also provides a method for preparing the above-mentioned pipeline component, comprising the following steps:

[0094] S1: preparing inner coating 3, mixing barium sulfate coarse aggregate, barium sulfate fine aggregate, barium sulfate powder, Portland cement, binder and water to form a paste or colloidal solution;

[0095] S2: The solution prepared in step S1 is evenly coated on the inner side wall of the component body.

[0096] After the inner coating 3 is completely dry, the inner coating 3 can be firmly bonded to the inner wall of the pipe component, thereby giving the corresponding component a certain radiation resistance.

[0097] As an optional embodiment, the coating method in step S2 is centrifugal coating or manual coating.

[0098] When the pipe component to be coated is a component with regular structure (such as water pipe 1, etc.), it can be coated by centrifugal method to improve the processing efficiency. When its structure is irregular, it can be coated by manual coating.

[0099] In addition, the specific components and configuration of the inner coating 3 are shown in Examples 1 and 2.

[0100] In addition to coating the inner side walls, the outer coating 4 can also be applied to the outer side walls of the corresponding component body.

[0101] As an optional implementation, the method further includes the steps of:

[0102] S3: preparing outer coating 4, mixing ultrafine barium sulfate powder, epoxy resin and water to form a paste or colloidal solution;

[0103] S4: evenly coating the solution prepared in step S3 on the outer side wall of the component body.

[0104] The specific components and configuration of the outer coating 4 are shown in Example 3.

[0105] As an optional embodiment, there is no order between step S1 and step S3 and there is no order between step S2 and step S4. Therefore, the coating order of the inner coating 3 and the outer coating 4 can be selected according to the actual production arrangement.

[0106] As an optional embodiment, step S5 is further included: after steps S2 and S4 are completed and any one of them is completed, the pipeline components are cured within 12 hours, the curing time is not less than 14 days, and the curing conditions are humidity not less than 65% and temperature not lower than 20°C.

[0107] This step can make the inner coating 3 harden normally or accelerate its hardening and strength growth. The compressive strength of the inner coating 3 finally obtained is not less than 25MPa.

[0108] The specific preparation process is as follows Figure 5 shown.

[0109] The present invention also provides a pipe network comprising any of the aforementioned pipe components, with at least one pipe component. The pipe network, comprising a certain number of the aforementioned pipe components, has a radiation shielding effect. When used for wastewater discharge, it can discharge the corresponding radioactive wastewater to an appropriate location; when used for material transport, it can transport the desired radioactive material to a desired location.

[0110] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A pipeline component, characterized in that: It comprises a component body and an inner coating located on the inner side wall of the component body, wherein the inner coating has a radiation protection function; The inner coating is a barium sulfate cement coating and the thickness of the inner coating is 20-30 mm; The inner coating comprises the following components in parts by weight: 35-40 parts of barium sulfate coarse aggregate, 30-35 parts of barium sulfate fine aggregate, 15-25 parts of barium sulfate powder, 5-8 parts of Portland cement, and 2-5 parts of binder; The particle size of the barium sulfate coarse aggregate is 3-5 mm, the particle size of the barium sulfate fine aggregate is 1-3 mm, and the particle size of the barium sulfate powder is less than 75 μm; The grade of the Portland cement is 42.5; The component body is made of cast iron, and the component body includes a water pipe; The nominal diameter of the water pipe is 100-300 mm.

2. The pipe component according to claim 1, characterized in that The component body further includes at least one of a clamp, an elbow and a tee.

3. The pipe component according to claim 1, wherein: An outer coating layer is further provided on the outer side wall of the component body. The thickness of the outer coating layer is smaller than the thickness of the inner coating layer, and the surface smoothness of the outer coating layer is greater than the surface smoothness of the inner coating layer.

4. The pipe component according to claim 3, characterized in that The outer coating comprises the following components in parts by weight: 75-85 parts of barium sulfate ultrafine powder, 15-25 parts of epoxy resin; The particle size of the ultrafine barium sulfate powder is no more than 10 μm.

5. The method for preparing a pipeline component according to any one of claims 1 to 4, characterized in that: The following steps are involved: S1: preparing an inner coating by uniformly mixing the barium sulfate coarse aggregate, barium sulfate fine aggregate, barium sulfate powder, Portland cement, binder and water to form a paste or colloidal solution; S2: evenly coating the solution prepared in step S1 on the inner side wall of the component body.

6. Pipe network, characterized in that, The pipe component comprises the pipe component according to any one of claims 1 to 4, wherein the number of the pipe component is at least one.

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