CN205013699U - Nuclear safety level needle type valve - Google Patents

Nuclear safety level needle type valve Download PDF

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Publication number
CN205013699U
CN205013699U CN201520769280.2U CN201520769280U CN205013699U CN 205013699 U CN205013699 U CN 205013699U CN 201520769280 U CN201520769280 U CN 201520769280U CN 205013699 U CN205013699 U CN 205013699U
Authority
CN
China
Prior art keywords
valve
filler
valve rod
gap
valve gap
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201520769280.2U
Other languages
Chinese (zh)
Inventor
周宏韬
沈捷美
姜燕
徐翠翠
施俊杰
刘道和
朱刚
王永年
马普东
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China General Nuclear Power Corp
China Nuclear Power Operation Co Ltd
Jiangsu Shentong Valve Co Ltd
Original Assignee
China General Nuclear Power Corp
Jiangsu Shentong Valve Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China General Nuclear Power Corp, Jiangsu Shentong Valve Co Ltd filed Critical China General Nuclear Power Corp
Priority to CN201520769280.2U priority Critical patent/CN205013699U/en
Application granted granted Critical
Publication of CN205013699U publication Critical patent/CN205013699U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model provides a nuclear safety level needle type valve, including the valve rod, the valve rod stretches into in the valve body, the tip of valve rod is equipped with the valve clack, it advances exit channel to be equipped with the medium on the valve body, the cover is equipped with the bellows subassembly on the valve rod, the bellows subassembly compresses tightly through the valve gap, valve gap rethread gland nut and valve body fixed connection, a handle is still connected topmost to the valve rod, pass through threaded connection between handle and the valve gap, be equipped with the filler between valve gap and the valve rod, the filler comprises with packing down last filler, pack and press cover fixed seal through packing, on, be equipped with the filler support ring between packing down, there is the through -hole opening with filler support ring matched with valve gap department, connect one on the through -hole and draw the fistulae, draw and connect a leak hunting valve on the fistulae. The beneficial effect of the utility model: can open the leak hunting valve at any time to whether the filler became invalid under detecting, can maintain the change when detecting out to pack down when becoming invalid, and the sealing performance that upward packed this moment maintain effectively, thereby guaranteed the sealing performance of valve, the emergence of stopping the incident.

Description

A kind of nuclear safe level needle type valve
Art
The utility model relates to a kind of valve, particularly relates to a kind of needle type valve.
Background technique
Generally, needle type valve can use filler to seal between valve rod and valve gap, only has when packing seal total failure, just can reflect the problem of dielectric leakage, now carry out maintain and replace more late, time special when medium has corrosivity, bring danger to the health of human body of operator.
Model utility content
In order to overcome the above-mentioned shortcoming of existing needle type valve, the utility model provides a kind of when valve seal performance does not have total failure, can detect the needle type valve that partial filler has damaged.
The utility model solves the technological scheme that its technical problem adopts, a kind of nuclear safe level needle type valve, comprise valve rod, valve rod stretches in valve body, the end of valve rod is provided with flap, valve body is provided with medium and imports and exports passage, valve rod is set with bellows component, bellows component is compressed by valve gap, valve gap is fixedly connected with valve body by gland nut again, valve rod also connects one handle topmost, be threaded connection between handle and valve gap, filler is provided with between valve gap and valve rod, filler is made up of upper filler and lower filler, filler is by filler pressing sleeve fixing seal, on, packing support ring is provided with between lower filler, through hole is had at the valve gap place matched with packing support ring, through hole connects a leak-off connection, leak-off connection connects a leak detector valve.
The beneficial effects of the utility model are: have through hole at the valve gap place matched with packing support ring, and connect the structure of leak detector valve, leak detector valve can be opened at any time, whether lost efficacy to detect lower filler, maintain and replace can be carried out when detecting that lower filler lost efficacy, and the sealability now going up filler maintains effectively, thus ensure the sealability of valve entirety, stop the generation of security incident.
Accompanying drawing explanation
Fig. 1 is the new structural representation of this practicality.
In figure: 1. nut; 2. handle; 3. filler pressing sleeve; 4. go up filler; 5. packing support ring; 6. descend filler; 7. valve gap; 8. gland nut; 9. bellows component; 10. valve rod; 11. through holes; 12. leak-off connections; 13. leak detector valves; 14. valve bodies; 15. flaps.
Embodiment
As shown in Figure 1, a kind of nuclear safe level needle type valve, comprise valve rod 10, valve rod 10 stretches in valve body 14, the end of valve rod 10 is provided with flap 15, valve body 14 is provided with medium and imports and exports passage, valve rod 10 is set with bellows component 9, bellows component 9 is compressed by valve gap 7, valve gap 7 is fixedly connected with valve body 14 by gland nut 8 again, valve rod 10 also connects one handle 2 topmost, be threaded connection between handle 2 and valve gap 7, filler is provided with between valve gap 7 and valve rod 10, filler is made up of upper filler 4 and lower filler 6, filler is by filler pressing sleeve 3 fixing seal, on, packing support ring 5 is provided with between lower filler, through hole 11 is had at valve gap 7 place matched with packing support ring 5, through hole 11 connects a leak-off connection 12, leak-off connection 12 connects a leak detector valve 13.During use, leak detector valve 13 can be opened at any time, if there is medium to flow out, then shows that the sylphon seal at valve rod place and lower packing seal were lost efficacy, need repair and replacement.

Claims (1)

1. a nuclear safe level needle type valve, comprise valve rod, valve rod stretches in valve body, the end of valve rod is provided with flap, valve body is provided with medium and imports and exports passage, valve rod is set with bellows component, bellows component is compressed by valve gap, valve gap is fixedly connected with valve body by gland nut again, described valve rod also connects one handle topmost, be threaded connection between described handle and valve gap, filler is provided with between described valve gap and valve rod, filler is made up of upper filler and lower filler, filler is by filler pressing sleeve fixing seal, it is characterized in that: between described upper filler and lower filler, be provided with packing support ring, through hole is had at the described valve gap place matched with packing support ring, through hole connects a leak-off connection, described leak-off connection connects a leak detector valve.
CN201520769280.2U 2015-10-08 2015-10-08 Nuclear safety level needle type valve Active CN205013699U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520769280.2U CN205013699U (en) 2015-10-08 2015-10-08 Nuclear safety level needle type valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520769280.2U CN205013699U (en) 2015-10-08 2015-10-08 Nuclear safety level needle type valve

Publications (1)

Publication Number Publication Date
CN205013699U true CN205013699U (en) 2016-02-03

Family

ID=55212303

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520769280.2U Active CN205013699U (en) 2015-10-08 2015-10-08 Nuclear safety level needle type valve

Country Status (1)

Country Link
CN (1) CN205013699U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105156693A (en) * 2015-10-08 2015-12-16 江苏神通阀门股份有限公司 Nuclear safety needle valve
CN108980401A (en) * 2018-08-23 2018-12-11 上海方龙流量校验设备制造有限公司 A kind of floating type unidirectional bowl valve of hunting leak for unidirectional volume pipe

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105156693A (en) * 2015-10-08 2015-12-16 江苏神通阀门股份有限公司 Nuclear safety needle valve
CN108980401A (en) * 2018-08-23 2018-12-11 上海方龙流量校验设备制造有限公司 A kind of floating type unidirectional bowl valve of hunting leak for unidirectional volume pipe

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GR01 Patent grant