标准解读

GB/T 26838-2024 是一项针对无损检测领域中携带式工业X射线探伤机的标准。该标准详细规定了此类设备的技术要求、试验方法、检验规则、标志、包装、运输和储存要求，旨在确保设备的安全性、可靠性和检测性能，同时为制造商、用户及检测机构提供统一的规范依据。

标准内容概览

  1. 范围：明确了本标准适用的携带式工业X射线探伤机类型，通常用于材料内部缺陷的无损检测，如焊接件、铸件和压力容器等的检测。

  2. 规范性引用文件：列出了实施本标准时应参考的其他国家标准或国际标准，这些文件对于理解及满足具体技术要求至关重要。

  3. 术语和定义：对标准中涉及的专业术语进行了解释，帮助读者准确理解各部分内容。

  4. 分类与型号：根据X射线探伤机的工作原理、能量范围、冷却方式等因素进行了分类，并规定了型号命名规则。

  5. 技术要求：

    • 安全要求：确保设备在设计、制造及使用过程中符合辐射安全与防护的相关标准。
    • 性能要求：包括穿透力、分辨率、稳定性、焦点尺寸等关键性能指标，以保证检测效果。
    • 结构与材料：对设备的机械结构、电气安全、材料选用等提出要求，确保耐用性和安全性。

  6. 试验方法：详细描述了如何进行各项性能测试和安全验证，包括但不限于辐射剂量测量、图像质量评估等。

  7. 检验规则：规定了产品出厂前的检验项目、抽样方案及合格判定准则，确保每台设备都符合标准要求。

  8. 标志、包装、运输和储存：要求设备上应有清晰的标识信息，说明其型号、生产日期、制造商等；同时规定了包装材料、方式以及运输和储存条件，以防止损坏并保持设备性能稳定。

实施意义

该标准通过统一规范携带式工业X射线探伤机的技术与质量标准，不仅有助于提升我国无损检测行业的整体水平，还能促进国内外贸易交流，保障使用人员的健康安全，推动行业可持续发展。对于制造商而言，遵循此标准能够提升产品质量和市场竞争力；对用户来说，则是选择高效、安全检测设备的重要依据。


如需获取更多详尽信息，请直接参考下方经官方授权发布的权威标准文档。

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文档简介

ICS

19.100

CCS

N78

中华人民共和国国家标准

GB/T26838—2024

代替GB/T26838—2011

无损检测仪器

携带式工业X射线探伤机

Non-destructivetestinginstruments—

PortableindustrialX-rayradiographicequipment

2024-08-23发布2025-03-01实施

国家市场监督管理总局发布

国家标准化管理委员会

GB/T26838—2024

目次

前言

·····································································································

Ⅲ

1

范围

··································································································

1

2

规范性引用文件

······················································································

1

3

术语和定义

···························································································

1

4

产品分类

······························································································

1

4.1

产品型号

·························································································

1

4.2

主要技术参数

····················································································

2

5

技术要求

······························································································

2

5.1

使用条件

·························································································

2

5.2

使用性能

·························································································

2

5.3

稳定性

···························································································

4

5.4

辐射防护与安全

·················································································

4

5.5

外观要求

·························································································

4

6

试验方法

······························································································

4

6.1

试验条件

·························································································

4

6.2

试验用主要仪器仪表和器具

·····································································

5

6.3

穿透力测定

······················································································

5

6.4

相对灵敏度测定

·················································································

7

6.5

射线辐射角和辐射场均匀性测定

································································

7

6.6

周向X射线机射线辐射角测定

··································································

9

6.7

计时器误差测定

·················································································

9

6.8

管电压误差测定

·················································································

9

6.9

管电压调节装置测定

···········································································

10

6.10

过电流保护测定

···············································································

10

6.11

过电压保护测定

···············································································

10

6.12

温度保护测定

··················································································

11

6.13

管电流欠毫安保护装置测定

···································································

11

6.14

连续工作稳定性能测定

········································································

11

6.15

变频、气绝缘主回路稳压电路输出电压波动测定

·············································

11

6.16

漏射线所致周围剂量当量率测定

······························································

11

6.17

低压回路绝缘电阻测定

········································································

11

6.18

接地保护装置接地电阻测定

···································································

11

6.19

低压回路绝缘强度测定

········································································

11

6.20

高压回路绝缘强度测定

········································································

12

Ⅰ

GB/T26838—2024

6.21

高压变压器次级对地绝缘强度测定

···························································

12

6.22

高压变压器初级对地绝缘电阻测定

···························································

12

6.23

灯丝变压器初级对地绝缘强度测定

···························································

12

6.24

外观质量检测

··················································································

12

6.25

泄漏测定

······················································································

12

6.26

运输、贮存环境试验

··········································································

12

6.27

包装试验

······················································································

12

7

检验规则

····························································································

12

7.1

出厂检验

························································································

12

7.2

型式检验

························································································

12

8

标志、包装、运输和贮存

···········································································

13

8.1

标志

·····························································································

13

8.2

包装

·····························································································

14

8.3

运输和贮存

·····················································································

14

附录A（资料性）

工业X射线机用穿透力校验试块

·················································

15

Ⅱ

GB/T26838—2024

前言

本文件按照GB/T1.1—2020《标准化工作导则第1部分：标准化文件的结构和起草规则》的规

定起草。

本文件代替GB/T26838—2011《无损检测仪器

携带式工业X射线探伤机》，与

GB/T26838—2011相比，除结构调整和编辑性改动外，主要技术变化如下：

a）增加了“术语和定义”（见第3章）；

b）更改了“产品型号”（见4.1，2011年版的3.1）；

c）更改了“环境温度”［见5.1b），2011年版的4.1b）]；

d）增加了“频率”要求［见5.1e）]；

e）更改了“曝光量”（见表1、表2、表3，2011年版的表1、表2、表3、表4）；

f）删除了“定向、工频、油绝缘X射线机穿透力和主型号”的描述（见2011年版的表2）；

g）更改了“温度保护装置”（见5.2.9，2011年版的4.2.9）；

h）更改了“漏射线空气比释动能率”相关描述（见5.4.1，2011年版的4.4.1）；

i）更改了“穿透力测定”试验步骤（见6.3.2，2011年版的5.3.2）；

j）更改了“定向X射线机穿透力试验示意图”（见图2，2011年版的图2）

k）增加了“周向X射线机穿透力试验示意图”（见6.3.3.1的图3）；

l）更改了“像质计放置示意图”（见图4，2011年版的图3）；

m）删除了关于定向X射线机辐射角测定的部分描述（见2011年版的5.5.1）；

n）删除了“用球隙放电法测定管电压误差”（见2011年版的5.8.1）；

o）更改了“漏射线空气比释动能率”试验方法（见6.16，2011年版的5.17）；

p）删除了“清洁度检测”（见2011年版的5.26）；

q）删除了“工频、油绝缘发生器密封性检测”［见2011年版的5.28a）]。

请注意本文件的某些内容可能涉及专利。本文件的发布机构不承担识别专利的责任。

本文件由中国机械工业联合会提出。

本文件由全国试验机标准化技术委员会（SAC/TC122）归口。

本文件起草单位：辽宁仪表研究所有限责任公司、丹东市市场监管事务服务中心（丹东市检验检测

认证中心）、辽宁轨道交通职业学院、爱德森（厦门）电子有限公司、丹东奥龙射线仪器集团有限公

司、丹东长英检测仪器有限公司、临沂正大检测技术有限公司、杭州智感科技有限公司、山东鲁能特种

设备检验检测有限公司、长沙戴卡科技有限公司、中机试验装备股份有限公司。

本文件主要起草人：于志军、赵小东、蔡靖、林俊明、曹高峰、姜盛杰、程雷、余长江、王琳、

侯文峰、程亚龙、刘军、任霞。

本文件及其所代替文件的历次版本发布情况为：

—2011年首发布为GB/T26838—2011；

—本次为第一次修订。

Ⅲ

GB/T26838—2024

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