一、閥體滲漏：
1、 Valve body leakage:
原因：1.閥體有砂眼或裂紋;2.閥體補焊時拉裂
Reason: 1 There are sand holes or cracks in the valve body; 2. The valve body is cracked during repair welding
處理：1.對懷疑裂紋處磨光，用硝酸溶液浸蝕，如有裂紋就可顯示出來;2.對裂紋處進(jìn)行挖補處理。
Treatment: 1 Polish the suspected crack and etch it with nitric acid solution. If there is a crack, it can be displayed; 2. Repair the crack.
二、閥桿及與其配合的絲母螺紋損壞或閥桿頭折斷、閥桿彎曲:
2、 The valve rod and its matching screw thread are damaged or the valve rod head is broken, and the valve rod is bent:
原因：1.操作不當(dāng)，開關(guān)用力過大，限位裝置失靈，過力矩保護(hù)未動作。;2.螺紋配合過松或過緊;3.操作次數(shù)過多、使用年限過久
Reason: 1 Improper operation, excessive switch force, failure of limit device and failure of over torque protection.; 2. The thread fit is too loose or tight; 3. Too many operations and too long service life
處理：1.改進(jìn)操作，不可用力過大;檢查限位裝置，檢查過力矩保護(hù)裝置;2.選擇材料合適，裝配公差符合要求;3.更換備品
Treatment: 1 Improve the operation and do not use too much force; Check the limit device and over torque protection device; 2. Select appropriate materials and the assembly tolerance meets the requirements; 3. Replace spare parts
三、閥蓋結(jié)合面漏
3、 Valve cover joint surface leakage
原因：1.螺栓緊力不夠或緊偏;2.墊片不符合要求或墊片損壞;3.結(jié)合面有缺陷
Reason: 1 Insufficient tightening force or eccentric tightening of bolts; 2. The gasket does not meet the requirements or the gasket is damaged; 3. The joint surface is defective
處理：1.重緊螺栓或使門蓋法蘭間隙一致;2.更換墊片;3.解體修研門蓋密封面
Treatment: 1 Re tighten the bolts or make the gap between the door cover flanges consistent; 2. Replace the gasket; 3. Disassemble and repair the sealing surface of the door cover
四、閥門內(nèi)漏：
4、 Valve internal leakage:
原因：1.關(guān)閉不嚴(yán);2.結(jié)合面損傷;3.閥芯與閥桿間隙過大，造成閥芯下垂或接觸不好;4.密封材料不良或閥芯卡澀。
Reason: 1 Lax closure; 2. Joint surface damage; 3. The clearance between the valve core and the valve stem is too large, causing the valve core to sag or poor contact; 4. The sealing material is poor or the valve core is jammed.
處理：1.改進(jìn)操作，重新開啟或關(guān)閉;2.閥門解體，閥芯、閥座密封面重新研磨;3.調(diào)整閥芯與閥桿間隙或更換閥瓣;4.閥門解體，解決卡澀;5.重新更換或堆焊密封圈
Treatment: 1 Improve operation and reopen or close; 2. Disassemble the valve and regrind the sealing surface of valve core and valve seat; 3. Adjust the clearance between the valve core and the valve stem or replace the valve disc; 4. Disassemble the valve and solve the jam; 5. Replace or weld the sealing ring again
五、閥芯與閥桿脫離，造成開關(guān)失靈:
5、 The valve core is separated from the valve stem, resulting in switch failure:
原因：1.修理不當(dāng);2.閥芯與閥桿結(jié)合處被腐蝕;3.開關(guān)用力過大，造成閥芯與閥桿結(jié)合處被損壞;4.閥芯止退墊片松脫、連接部位磨損
Reason: 1 Improper repair; 2. The joint of valve core and valve rod is corroded; 3. Excessive switching force causes damage to the joint between valve core and valve rod; 4. The valve core stop gasket is loose and the connecting parts are worn
處理：1.檢修時注意檢查;2.更換耐腐蝕材質(zhì)的門桿;3.操作是不可暴力開關(guān)，或不可全開后繼續(xù)開啟閥門;4.檢查更換損壞備品
Treatment: 1 Pay attention to inspection during maintenance; 2. Replace the door rod made of corrosion-resistant material; 3. Do not switch violently or continue to open the valve after fully opening; 4. Check and replace damaged spare parts
六、閥芯、閥座有裂紋：
6、 Cracks on valve core and valve seat:
原因：1.結(jié)合面堆焊質(zhì)量差;2.閥門兩側(cè)溫差大
Reason: 1 Poor surfacing quality of joint surface; 2. Large temperature difference on both sides of the valve
處理：對有裂紋處進(jìn)行補焊，按規(guī)定進(jìn)行熱處理，車光、并研磨。
Treatment: repair welding shall be carried out for cracks, heat treatment shall be carried out according to regulations, polishing and grinding shall be carried out.
七、閥桿升降不靈或開關(guān)不動:
7、 The valve rod does not lift properly or the switch does not move:
原因：1.冷態(tài)時關(guān)得太緊受熱后脹死或全開后太緊;2.填料壓得過緊;3.閥桿間隙太小而脹死;4.閥桿與絲母配合過緊，或配合絲扣損壞;5.填料壓蓋壓偏;6.門桿彎曲;7.介質(zhì)溫度過高，潤滑不良，閥桿嚴(yán)重銹蝕
Reason: 1 It is closed too tightly in cold state and swells to death after being heated, or it is too tight after being fully opened; 2. The packing is pressed too tightly; 3. The valve stem clearance is too small and expands to death; 4. The fit between the valve rod and the screw nut is too tight, or the matching screw thread is damaged; 5. Packing gland pressure deviation; 6. The door rod is bent; 7. The medium temperature is too high, the lubrication is poor, and the valve rod is seriously rusted
處理：1.對閥體加熱后用力緩慢試開或開足并緊時再稍關(guān);2.稍松填料壓蓋后試開;3.適當(dāng)加大閥桿間隙;4.更換閥桿與絲母;5.重新調(diào)整填料壓蓋螺栓;6.校直門桿或進(jìn)行更換;7.門桿采用純凈石墨粉做潤滑劑
Treatment: 1 After heating the valve body, try to open it slowly or close it slightly when it is fully opened and tightened; 2. Slightly loosen the packing gland and try to open it; 3. Properly increase the valve stem clearance; 4. Replace the valve rod and screw nut; 5. Readjust the packing gland bolts; 6. Straighten the door rod or replace it; 7. Pure graphite powder is used as lubricant for door rod
八、填料泄漏:
8、 Packing leakage:
原因：1.填料材質(zhì)不對;2.填料壓蓋未壓緊或壓偏;3.加裝填料的方法不對;4.閥桿表面損傷
Reason: 1 Wrong filler material; 2. The packing gland is not compressed or biased; 3. The method of adding filler is wrong; 4. Valve stem surface damage
處理：1.正確選擇填料;2.檢查并調(diào)整填料壓蓋，防止壓偏;3.按正確的方法加裝填料;4.修理或更換閥桿
Treatment: 1 Correct selection of filler; 2. Check and adjust the packing gland to prevent pressure deviation; 3. Add filler according to the correct method; 4. Repair or replace the valve stem
The above is the knowledge brought to you today. Lianggong valve has focused on the industry for many years and continuously provides users with valuable content. Please continue to pay attention to us for more content: http://www.serviceforo.com
企業(yè)公告：
