diff --git a/.vs/SGGL_SeDin/v17/DocumentLayout.json b/.vs/SGGL_SeDin/v17/DocumentLayout.json
new file mode 100644
index 00000000..ee0c6d15
--- /dev/null
+++ b/.vs/SGGL_SeDin/v17/DocumentLayout.json
@@ -0,0 +1,71 @@
+{
+  "Version": 1,
+  "WorkspaceRootPath": "D:\\\u6570\u636E\\\u8BFA\u5FC5\u8FBE\\\u8D5B\u9F0E\\SGGL_SeDin\\",
+  "Documents": [],
+  "DocumentGroupContainers": [
+    {
+      "Orientation": 0,
+      "VerticalTabListWidth": 256,
+      "DocumentGroups": [
+        {
+          "DockedWidth": 386,
+          "SelectedChildIndex": -1,
+          "Children": [
+            {
+              "$type": "Bookmark",
+              "Name": "ST:0:0:{e506b91c-c606-466a-90a9-123d1d1e12b3}"
+            },
+            {
+              "$type": "Bookmark",
+              "Name": "ST:130:0:{116d2292-e37d-41cd-a077-ebacac4c8cc4}"
+            },
+            {
+              "$type": "Bookmark",
+              "Name": "ST:132:0:{116d2292-e37d-41cd-a077-ebacac4c8cc4}"
+            },
+            {
+              "$type": "Bookmark",
+              "Name": "ST:133:0:{116d2292-e37d-41cd-a077-ebacac4c8cc4}"
+            },
+            {
+              "$type": "Bookmark",
+              "Name": "ST:134:0:{116d2292-e37d-41cd-a077-ebacac4c8cc4}"
+            },
+            {
+              "$type": "Bookmark",
+              "Name": "ST:1:0:{f2bd8fb8-fc94-3dae-a733-fd993c73cc87}"
+            },
+            {
+              "$type": "Bookmark",
+              "Name": "ST:131:0:{1fc202d4-d401-403c-9834-5b218574bb67}"
+            },
+            {
+              "$type": "Bookmark",
+              "Name": "ST:129:0:{13b12e3e-c1b4-4539-9371-4fe9a0d523fc}"
+            },
+            {
+              "$type": "Bookmark",
+              "Name": "ST:2:0:{f2bd8fb8-fc94-3dae-a733-fd993c73cc87}"
+            },
+            {
+              "$type": "Bookmark",
+              "Name": "ST:3:0:{f2bd8fb8-fc94-3dae-a733-fd993c73cc87}"
+            },
+            {
+              "$type": "Bookmark",
+              "Name": "ST:128:0:{116d2292-e37d-41cd-a077-ebacac4c8cc4}"
+            },
+            {
+              "$type": "Bookmark",
+              "Name": "ST:129:0:{116d2292-e37d-41cd-a077-ebacac4c8cc4}"
+            },
+            {
+              "$type": "Bookmark",
+              "Name": "ST:0:0:{aa2115a1-9712-457b-9047-dbb71ca2cdd2}"
+            }
+          ]
+        }
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/SGGL/BLL/HJGL/WeldingManage/PipelineService.cs b/SGGL/BLL/HJGL/WeldingManage/PipelineService.cs
index b066eee5..e6047779 100644
--- a/SGGL/BLL/HJGL/WeldingManage/PipelineService.cs
+++ b/SGGL/BLL/HJGL/WeldingManage/PipelineService.cs
@@ -567,37 +567,39 @@ namespace BLL
         /// <param name="pipeline"></param>
         public static void AddPipeline(Model.HJGL_Pipeline pipeline)
         {
-            Model.SGGLDB db = Funs.DB;
-            Model.HJGL_Pipeline newPipeline = new Model.HJGL_Pipeline();
-            newPipeline.PipelineId = pipeline.PipelineId;
-            newPipeline.ProjectId = pipeline.ProjectId;
-            //newPipeline.InstallationId = pipeline.InstallationId;
-            newPipeline.UnitId = pipeline.UnitId;
-            newPipeline.UnitWorkId = pipeline.UnitWorkId;
-            newPipeline.PipelineCode = pipeline.PipelineCode;
-            newPipeline.SingleName = pipeline.SingleName;
-            newPipeline.SingleNumber = pipeline.SingleNumber;
-            newPipeline.PipingClassId = pipeline.PipingClassId;
-            newPipeline.MediumId = pipeline.MediumId;
-            newPipeline.DetectionRateId = pipeline.DetectionRateId;
-            newPipeline.DetectionType = pipeline.DetectionType;
-            newPipeline.DesignPress = pipeline.DesignPress;
-            newPipeline.DesignTemperature = pipeline.DesignTemperature;
-            newPipeline.TestPressure = pipeline.TestPressure;
-            newPipeline.TestMedium = pipeline.TestMedium;
-            newPipeline.PipeLenth = pipeline.PipeLenth;
-            newPipeline.PressurePipingClassId = pipeline.PressurePipingClassId;
-            newPipeline.Remark = pipeline.Remark;
-            newPipeline.LeakPressure = pipeline.LeakPressure;
-            newPipeline.LeakMedium = pipeline.LeakMedium;
-            newPipeline.VacuumPressure = pipeline.VacuumPressure;
-            newPipeline.PCMedium = pipeline.PCMedium;
-            newPipeline.PCtype = pipeline.PCtype;
-            newPipeline.MaterialId = pipeline.MaterialId;
-            newPipeline.State = pipeline.State;
-            newPipeline.FlowingSection = pipeline.FlowingSection;
-            db.HJGL_Pipeline.InsertOnSubmit(newPipeline);
-            db.SubmitChanges();
+            using (Model.SGGLDB db = new Model.SGGLDB(Funs.ConnString))
+            {
+                Model.HJGL_Pipeline newPipeline = new Model.HJGL_Pipeline();
+                newPipeline.PipelineId = pipeline.PipelineId;
+                newPipeline.ProjectId = pipeline.ProjectId;
+                //newPipeline.InstallationId = pipeline.InstallationId;
+                newPipeline.UnitId = pipeline.UnitId;
+                newPipeline.UnitWorkId = pipeline.UnitWorkId;
+                newPipeline.PipelineCode = pipeline.PipelineCode;
+                newPipeline.SingleName = pipeline.SingleName;
+                newPipeline.SingleNumber = pipeline.SingleNumber;
+                newPipeline.PipingClassId = pipeline.PipingClassId;
+                newPipeline.MediumId = pipeline.MediumId;
+                newPipeline.DetectionRateId = pipeline.DetectionRateId;
+                newPipeline.DetectionType = pipeline.DetectionType;
+                newPipeline.DesignPress = pipeline.DesignPress;
+                newPipeline.DesignTemperature = pipeline.DesignTemperature;
+                newPipeline.TestPressure = pipeline.TestPressure;
+                newPipeline.TestMedium = pipeline.TestMedium;
+                newPipeline.PipeLenth = pipeline.PipeLenth;
+                newPipeline.PressurePipingClassId = pipeline.PressurePipingClassId;
+                newPipeline.Remark = pipeline.Remark;
+                newPipeline.LeakPressure = pipeline.LeakPressure;
+                newPipeline.LeakMedium = pipeline.LeakMedium;
+                newPipeline.VacuumPressure = pipeline.VacuumPressure;
+                newPipeline.PCMedium = pipeline.PCMedium;
+                newPipeline.PCtype = pipeline.PCtype;
+                newPipeline.MaterialId = pipeline.MaterialId;
+                newPipeline.State = pipeline.State;
+                newPipeline.FlowingSection = pipeline.FlowingSection;
+                db.HJGL_Pipeline.InsertOnSubmit(newPipeline);
+                db.SubmitChanges();
+            } 
         }
 
         /// <summary>