CN201992140U - Dual-valve structured high-pressure socket-welded gate valve - Google Patents
Dual-valve structured high-pressure socket-welded gate valve Download PDFInfo
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- CN201992140U CN201992140U CN2011201480421U CN201120148042U CN201992140U CN 201992140 U CN201992140 U CN 201992140U CN 2011201480421 U CN2011201480421 U CN 2011201480421U CN 201120148042 U CN201120148042 U CN 201120148042U CN 201992140 U CN201992140 U CN 201992140U
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Abstract
The utility model relates to a dual-valve structured high-pressure socket-welded gate valve, which comprises two valve bodies that are symmetric in the transverse direction and are socket-welded into an integral body, and a pressure detection system arranged between the two valve bodies, wherein a valve seat is arranged at the bottom of the valve body, a valve cap is arranged at the upper part of the valve body and is connected with a bracket, and a hand wheel is arranged at the top of the bracket; a dual-seal system and a valve stem connected with a valve stem nut inside the hand wheel are arranged inside the valve body, and the valve stem is controlled through the hand wheel to drive a valve plate to conduct press or rise movement in the direction perpendicular to the direction of the fluid inside the valve body to open or close the valve; and the pressure detection system comprises a high-pressure gauge, a stainless steel pressure guide pipe and a pressure sampling short piece. The dual-valve structured high-pressure socket-welded gate valve provided by the utility model has the advantages of light weight, small volume, simple pressure sampling manner, high safety and reliability, and concise and regular loop of mounted instruments, and is simple for construction and mounting and convenient for maintenance. Also, the gate valve can save mounting material and construction cost, ensures safe operation and maintenance of on-line instruments, and creates good economic benefits.
Description
Technical field
The utility model relates to the high tension instrument root pressure cut-off valve of high-pressure hydrogenation and coal tar oil High-pressure Hydrogenation Unit, refers in particular to a kind of double-valve structure high pressure SOCKET WELDING gate valve that is applicable to high-pressure hydrogenation and coal tar hydrogenating on the refining and petrochemical processing units.
Background technique
At present, on high-pressure hydrogenation and coal tar oil High-pressure Hydrogenation Unit, a pressure root valve of high tension instrument is 3/4 " the bivalve pressure; modal is to select for use two independently high root canal cut-off valves (Class 1500 or Class 2500) to install, each subsidiary one 3/4 at high root canal cut-off valve two ends " the long short tube of Px100mm.During on-the-spot the installation, by two valve bodies of subsidiary short tube connection, high tension instrument pipeline and pipe fitting size are little, and the suitable distance control difficulty between two valves is big, and construction is inconvenient, and complexity is installed, and operation easier is big.Simultaneously, when the device instrument was carried out checking maintenance, whether the cut-out of two valves was closed and is put in place and can't judge, had brought great potential safety hazard for the operation of device.
Summary of the invention
The purpose of this utility model is improved and is innovated at the defective that exists in the background technique and problem, provide a kind of and substitute two independently high pressure pressure measuring valves with incorporate double-valve structure, simple in structure, simple installation, easy to operate, and can online leak detection of carrying out processing medium, guarantee the macrocyclic safe operation of High-pressure Hydrogenation Unit, and economical and practical double-valve structure high pressure SOCKET WELDING gate valve.
To be that structure is a kind of comprise the valve body that left and right symmetrical spigot and socket type is welded into a whole and be arranged on pressure detecting system between two valve bodies the technical solution of the utility model, wherein:
The valve body bottom is provided with valve seat, and valve body top is provided with valve gap, and valve gap connects support, and a top of the trellis is provided with handwheel;
Described valve inner is provided with double seal system, and the valve rod that links to each other with handwheel inner valve stem nut, and does to move with perpendicular pressure of valve inner fluid direction or elevator by handwheel control valve rod drive valve plate and close or Open valve;
Described pressure detecting system comprises high-pressure manometer, stainless steel pressure inlet tube and pressure pipe nipple.
Advantage of the present utility model and beneficial effect:
The utility model valve weight is light, volume is little, is applied on high-pressure hydrogenation or the high pressure coal tar hydrogenating unit, and two SOCKET WELDING high pressure sluice valves that high root canal pressure is adopted change the ways of measure pressure of the high pressure SOCKET WELDING gate valve of a double-valve structure into, ways of measure pressure is easy, safe and reliable, construction and installation are simple, and the instrument circuit of installation is succinctly regular, easy to maintenance, can save mounting material and operating expenses, ensure the safe operation and the maintenance of in-line meter, create good economic benefits.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the utility model mounting structure schematic representation.
Embodiment
By Fig. 1,2 as can be known, the utility model comprises the valve body 29 that left and right symmetrical spigot and socket type is welded into a whole and is arranged on pressure detecting system between two valve bodies 29, wherein:
Valve body 29 bottoms are provided with valve seat 30, and valve body 29 tops are provided with valve gap 25, and valve gap 25 connects support 18, and support 18 tops are provided with handwheel 17;
Described valve body 29 inside are provided with double seal system, and the valve rod 28 that links to each other with handwheel 17 inner valve stem nuts 13, and do to move with perpendicular pressure of valve inner fluid direction or elevator by handwheel 17 control valve rods 28 drive valve plates 4 and close or Open valve;
Described pressure detecting system comprises high-pressure manometer 31, stainless steel pressure inlet tube 32 and pressure pipe nipple 33.
Double seal system described in the utility model comprise the inside leakproof seal system that constitutes by right seal disc 1, spring 2, left seal disc 3 and valve plate 4 and be arranged on valve gap 25 and support 18 in the outside leakproof seal system that constitutes by tooth profile metal pad 6, filler packing ring 7, filler 8, filler gland 9 and hold-down grid 10.Be provided with auxiliary valve rod 28 straight-line leading trucks 5 in the described valve body 29.Described handwheel 17 is arranged on the Stem Mut 13, and Stem Mut 13 bottoms are provided with thrust ball bearing 11, and the bottom outer wall is provided with bearing gland 12, and the top also is connected with gland 14.Described valve plate 4 and valve seat 30 equal built-up welding officials Tai Lai alloys.
Structural feature of the present utility model:
The utility model is made up of left and right clack valve body and pressure detecting system, and left clack valve body and right clack valve body be symmetry each other, and structure is identical.Valve body is by right seal disc 1 as shown in Figure 1, spring 2, left side seal disc 3, valve plate 4, leading truck 5, tooth profile metal pad 6, filler packing ring 7, filler 8, filler gland 9, hold-down grid 10, thrust ball bearing 11, bearing gland 12, Stem Mut 13, gland 14, interior hexagonal cylinder screw 15, hexagonal locking nut 16, handwheel 17, support 18, swing bolt 19, nut 20, nut 21, stud bolt 22, cotter pin 23, bearing pin 24, valve gap 25, high pressure nut 26, in logical stud bolt 27, valve rod 28, valve body 29, totally 30 parts of valve seat 30 is formed.The key property of its valve body itself is embodied in high temperature high voltage resistant and two aspects of sealability, and it is the engineering goods that bear the internal high temperature high pressure, has enough strength and stiffness, does not break to guarantee long-term the use or produces distortion.Strength and stiffness are mainly reflected on the material of valve body 29, valve seat 30, valve plate 4, valve rod 28 and valve gap 25, and valve plate 4 and valve seat 30 built-up welding Si Tailai alloys are to strengthen its wear resistance and rigidity; Sealability is the ability that each sealed department steric hindrance is ended dielectric leakage, and there are three places at its sealing position: the contacting point between open-shut device and valve seat two sealing surfaces, the joining and locate the joint of valve body and valve gap of filler and valve rod and stuffing box.As shown in Figure 1, right seal disc 1, spring 2, left seal disc 3 are formed the inner sealing system of valve body, in case the interior leakage of medium; The outside seal system of valve body is formed in the joint of tooth profile metal pad 6, filler packing ring 7, filler 8, filler gland 9, hold-down grid 10 and valve body and valve gap, in case the leaking outside of medium.The utility model pressure detecting system is used for the on-the-spot detection of high-pressure, to judge the sealability of gate valve.Pressure detecting system is made up of high-pressure manometer 31, stainless steel pressure inlet tube 32, pressure pipe nipple 33.Under the situation of two valve plate standard-sized sheets, Pressure testing is the normal pressure of processing medium, when the impulse measuring instrument need carry out repair and maintenance, two valve plates all cut off, by the pressure indication of high-pressure manometer 31, judge whether valve closes tightly, to reach the purpose of safety inspection.
Mounting process of the present utility model: on the pressure mounting type, change independently Class 150,0/2,500 3/4 of two of reasons " mounting type of high pressure SOCKET WELDING gate valve serial connection; use the mounting type of Fig. 2 instead, constitute root pressure system by restricting orifice a, double-valve structure SOCKET WELDING high pressure sluice valve b and butt welding steel flange c.
Structural principle of the present utility model:
The utility model is a bilateral symmetry formula SOCKET WELDING structure, and valve body contains two valve plates, the equal built-up welding Si Tailai of valve plate and valve seat alloy, and the moving direction and the flow direction of two valve plates are perpendicular, only make standard-sized sheet and complete shut-down, realize twice cut-out, do not do to regulate and throttling.Whether the utility model can detect the operation pressure of medium on the spot by high-pressure manometer when normally, when checking maintenance turn-offs, can judge to cut off by the indication of the pressure on the pressure gauge to put in place, avoids turn-offing the leakage that does not sternly cause high-pressure medium.The utility model adopts forced seal, during valve closing, relies on external force by force valve plate to be pressed to valve seat, guarantees the sealing of sealing surface; Valve plate has trapezoidal thread with the valve rod moving linearly on lifting bar, by the nut of valve tip and the guide groove on the valve body, will rotatablely move becomes straight line motion, will operate torque and become operation thrust.During Open valve, when the flashboard lifting height equaled 1:1 times of valve latus rectum, the passage of fluid was unimpeded fully.
The utility model has three kinds of valve gap forms, and first kind is the bolt type valve gap, and its valve body is connected with bolt and nut with valve gap, spiral wound gasket (316 folder Expanded graphite manufacturing) sealing; Second kind of form is the welding type valve gap, and its valve body and valve gap are with being threaded full weldering sealing; The third is a pressure self tightening valve gap, and its valve body and valve gap be with being threaded, the sealing of internal-pressure self-sealing ring, and it can prevent effectively that High Temperature High Pressure and temperature, pressure alternation from making that flange seal lost efficacy in the valve.
Working principle of the present utility model:
The utility model changes two traditional independent SOCKET WELDING high pressure sluice valves of installing, and uses a double-valve structure high pressure SOCKET WELDING gate valve instead and replaces, and the processing medium of impulse is realized closing and opening of valve under two valve plates act on simultaneously.Simultaneously, by the Pressure testing of the on-the-spot high-pressure manometer on the valve body, judge the sealability of valve.
Embodiment described in the utility model only is the description that preferred implementation of the present utility model is carried out; be not that the utility model design and scope are limited; under the prerequisite that does not break away from the utility model design philosophy; engineers and technicians make the technical solution of the utility model in related domain various modification and improvement; all should fall into protection domain of the present utility model; the technology contents that the utility model is asked for protection all is documented in claims.
Claims (5)
1. double-valve structure high pressure SOCKET WELDING gate valve is characterized in that comprising the valve body (29) that left and right symmetrical spigot and socket type is welded into a whole and is arranged on pressure detecting system between two valve bodies (29), wherein:
Valve body (29) bottom is provided with valve seat (30), and valve body (29) top is provided with valve gap (25), and valve gap (25) connects support (18), and support (18) top is provided with handwheel (17);
Described valve body (29) inside is provided with double seal system, and the valve rod (28) that links to each other with handwheel (17) inner valve stem nut (13), and control valve rod (28) drive valve plate (4) by handwheel (17) and do to move and close or Open valve with perpendicular pressure of valve inner fluid direction or elevator;
Described pressure detecting system comprises high-pressure manometer (31), stainless steel pressure inlet tube (32) and pressure pipe nipple (33).
2. double-valve structure high pressure SOCKET WELDING gate valve according to claim 1, it is characterized in that described double seal system comprise the inside leakproof seal system that constitutes by right seal disc (1), spring (2), left seal disc (3) and valve plate (4) and be arranged on valve gap (25) and support (18) in the outside leakproof seal system by tooth profile metal pad (6), filler packing ring (7), filler (8), filler gland (9) and hold-down grid (10) formation.
3. double-valve structure high pressure SOCKET WELDING gate valve according to claim 1 is characterized in that being provided with in the described valve body (29) the straight-line leading truck of auxiliary valve rod (28) (5).
4. double-valve structure high pressure SOCKET WELDING gate valve according to claim 1, it is characterized in that described handwheel (17) is arranged on the Stem Mut (13), Stem Mut (13) bottom is provided with thrust ball bearing (11), the bottom outer wall is provided with bearing gland (12), and the top also is connected with gland (14).
5. double-valve structure high pressure SOCKET WELDING gate valve according to claim 1 is characterized in that the equal built-up welding officials Tai Lai alloy of described valve plate (4) and valve seat (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201480421U CN201992140U (en) | 2011-05-11 | 2011-05-11 | Dual-valve structured high-pressure socket-welded gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201480421U CN201992140U (en) | 2011-05-11 | 2011-05-11 | Dual-valve structured high-pressure socket-welded gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201992140U true CN201992140U (en) | 2011-09-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201480421U Expired - Fee Related CN201992140U (en) | 2011-05-11 | 2011-05-11 | Dual-valve structured high-pressure socket-welded gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201992140U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062427A (en) * | 2013-01-11 | 2013-04-24 | 李原华 | High-pressure flat gate valve |
| CN106151562A (en) * | 2016-08-02 | 2016-11-23 | 江苏利文机械有限公司 | A kind of high temperature expansion valve |
| CN108547957A (en) * | 2018-04-15 | 2018-09-18 | 天津长瑞大通流体控制系统有限公司 | The binary valve leaked in valve gas material and method are blocked with high pressure barrier medium |
| CN108679246A (en) * | 2018-05-24 | 2018-10-19 | 江苏天域阀业制造有限公司 | A kind of double insurance throttle |
| CN114001196A (en) * | 2021-09-28 | 2022-02-01 | 普斐特油气工程(江苏)股份有限公司 | Totally-enclosed high-temperature and high-pressure resistant oil production valve |
-
2011
- 2011-05-11 CN CN2011201480421U patent/CN201992140U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062427A (en) * | 2013-01-11 | 2013-04-24 | 李原华 | High-pressure flat gate valve |
| CN106151562A (en) * | 2016-08-02 | 2016-11-23 | 江苏利文机械有限公司 | A kind of high temperature expansion valve |
| CN108547957A (en) * | 2018-04-15 | 2018-09-18 | 天津长瑞大通流体控制系统有限公司 | The binary valve leaked in valve gas material and method are blocked with high pressure barrier medium |
| CN108679246A (en) * | 2018-05-24 | 2018-10-19 | 江苏天域阀业制造有限公司 | A kind of double insurance throttle |
| CN114001196A (en) * | 2021-09-28 | 2022-02-01 | 普斐特油气工程(江苏)股份有限公司 | Totally-enclosed high-temperature and high-pressure resistant oil production valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110928 Termination date: 20170511 |