CN209041577U - High-pressure hydrogenation screw down nonreturn valve - Google Patents

High-pressure hydrogenation screw down nonreturn valve Download PDF

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Publication number
CN209041577U
CN209041577U CN201821682788.9U CN201821682788U CN209041577U CN 209041577 U CN209041577 U CN 209041577U CN 201821682788 U CN201821682788 U CN 201821682788U CN 209041577 U CN209041577 U CN 209041577U
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China
Prior art keywords
valve
valve body
screw down
pressure hydrogenation
down nonreturn
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CN201821682788.9U
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Chinese (zh)
Inventor
邹丽
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Shanghai Lianggong Valve Factory Co Ltd
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Shanghai Lianggong Valve Factory Co Ltd
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Priority to CN201821682788.9U priority Critical patent/CN209041577U/en
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Abstract

The utility model provides a kind of high-pressure hydrogenation screw down nonreturn valve, it includes: valve body, bracket, flap, valve rod, stuffing box, clip and bevel gearing, the stuffing box, the flap and the valve rod are located in the valve body, the valve rod passes through the stuffing box, the bracket is connect by the clip with the valve body, link slot is provided in the clip, the bracket and the valve body are respectively equipped with the bearing attachment and valve body interconnecting piece of outwardly convex, and the bearing attachment and the valve body interconnecting piece are arranged in the link slot.The top and bottom of valve rod are separately connected bevel gearing and flap.It can be realized using yoke configurations and quickly connected between valve body and bracket, improve the convenience for connecting or dismantling between valve body and bracket, improve the efficiency of assembly.

Description

High-pressure hydrogenation screw down nonreturn valve
Technical field
The utility model relates to a kind of high-pressure hydrogenation screw down nonreturn valves.
Background technique
High-pressure hydrogenation process is an important process of petroleum deep processing, and the light of unit crude oil can be improved by this technique Oily recovery, improves the quality of fuel oil, to improve the overall efficiency of oil plant.Hydrogenation valve is oil refining industrial production The critical piping element of middle hydrogenation system, its medium have a characteristic that
1. high temperature and pressure, the general 14~20MPa of operating pressure, or it is higher;
2. medium is inflammable and explosive, the mixed gas risk of hydrogen or oil gas and hydrogen is very big;
3. corrosivity, hydrogen is a kind of to penetrate into inside metal material and cause material modification at room temperature or elevated temperatures The medium of (deterioration).It can cause the reagency corrosion cracking of many metal materials under room temperature, it can cause metal material under high temperature The Quick uniform of material corrodes.
It is connected between common plus hydrogen screw down nonreturn valve bracket and valve body by bolt, to guarantee to be reliably connected to need to use To multiple bolts, handling are inconvenient, packaging efficiency is low.
Utility model content
The technical problems to be solved in the utility model is the branch in order to overcome the high-pressure hydrogenation screw down nonreturn valve of the prior art Frame and valve body handling are inconvenient, and the low defect of packaging efficiency provides a kind of high-pressure hydrogenation screw down nonreturn valve for capableing of quick despatch.
The utility model is to solve above-mentioned technical problem by following technical proposals:
A kind of high-pressure hydrogenation screw down nonreturn valve, it is characterized in that comprising have: valve body, bracket, flap, valve rod, stuffing box And clip, the stuffing box, the flap and the valve rod are located in the valve body, the valve rod passes through the stuffing box, institute It states bracket to connect by the clip with the valve body, link slot is provided in the clip, the bracket and the valve body are distinguished Bearing attachment and valve body interconnecting piece equipped with outwardly convex, the bearing attachment and the valve body interconnecting piece are arranged in described In link slot.
Preferably, a positioning step is provided on the outside of the upper surface of the valve body, the lower end of the bracket and the positioning Step matches.
In the present solution, accurately being connected using positioning step convenient for bracket and valve body.
Preferably, the outer peripheral surface of the stuffing box is equipped with outer step, the inner groovy around inner wall, institute are provided on the valve body Stating high-pressure hydrogenation screw down nonreturn valve further includes sealing ring, gasket ring and stop collar, and the stop collar is arranged in the inner groovy, institute State sealing ring, the gasket ring is arranged between the outer step and the stop collar along the axial direction of the valve rod, the sealing Circle is connected to the bottom surface of the outer step.
In the present solution, matched using sealing ring, gasket ring, stop collar with inner groovy, outer step enable to valve body with Pressure self-sealing effect is generated between stuffing box.
Preferably, the sealing ring is interweaved by stainless steel metal knitmesh with soft graphite, in the sealing ring Three tops in the corner far from the outer step are set there are three metal stiffening ring.
In the present solution, sealing ring tightness is good, stable structure.
Preferably, the inside of the upper surface of the valve body is equipped with step in one, the high-pressure hydrogenation screw down nonreturn valve is also wrapped A pressing plate is included, the pressing plate is placed on the interior step, and the pressing plate is bolted to the stuffing box.
In the present solution, precompression can be generated to sealing ring, gasket ring, stop collar using pressing plate, to guarantee valve body and fill out Initial sealing between hopper.
Preferably, the inside of the stuffing box is equipped with stuffing-box, the high-pressure hydrogenation screw down nonreturn valve further includes filler group Part and gland, the filler assembly are filled between the stuffing-box and the valve rod, and the gland presses on institute The upper surface of filler assembly is stated, the gland is bolted to the pressing plate.
In the present solution, can guarantee the leakproofness between valve rod and stuffing box using filler assembly and gland.
Preferably, the filler assembly includes Packing seat, two woollen yarn knitting graphite annulus and multiple soft graphite rings, the filler The axial alignment of pad, described two woollen yarn knitting graphite annulus and the multiple soft graphite ring along the valve rod, the multiple flexibility stone For Mo Huan between described two woollen yarn knitting graphite annulus, the Packing seat is connected to the bottom surface of the stuffing-box.
In the present solution, the good airproof performance and structural strength of filler assembly are high.
Preferably, the bottom surface of the stuffing box and valve rod connected position are equipped with fillet surface, the valve rod is equipped with towards institute The inverse sealing face of stuffing box is stated, the inverse sealing face can press on the fillet surface.
In the present solution, using fillet surface and inverse sealing face cooperation, work can be in high-pressure hydrogenation screw down nonreturn valve Make to replace filler assembly under state.
Preferably, the inner peripheral surface of the outer peripheral surface of the flap and the valve body is equipped with wearing layer.
In the present solution, wearing layer can enhance the wearability between flap and valve body.
Preferably, being provided with the axially extending guide groove along the valve rod on the bracket, the high-pressure hydrogenation stops Returning valve further includes torsional stop, and the torsional stop passes through the guide groove and is connected to the valve rod.
It is rotated in the process of moving up and down in the present solution, can be avoided valve rod using guide groove and torsional stop.
On the basis of common knowledge of the art, above-mentioned each optimum condition, can any combination to get the utility model respectively compared with Good example.
The positive effect of the utility model is: can be realized using yoke configurations and quickly connects between valve body and bracket Connect, improve valve body and between connect or disassembly convenience, improve the efficiency of assembly.
Detailed description of the invention
Fig. 1 is the broken section of high-pressure hydrogenation screw down nonreturn valve in the on state in the preferred embodiment in the utility model Structural schematic diagram.
Fig. 2 is the broken section of high-pressure hydrogenation screw down nonreturn valve in the off state in the preferred embodiment in the utility model Structural schematic diagram.
Fig. 3 is the enlarged drawing of part A in Fig. 1.
Fig. 4 is the schematic diagram of internal structure of sealing ring in the preferred embodiment in the utility model.
Description of symbols:
Valve body 10
Positioning step 11
Inner groovy 12
Interior step 13
Valve body interconnecting piece 14
Bracket 20
Guide groove 21
Bearing attachment 22
Flap 30
Valve rod 40
Sealing surface 41
Torsional stop 42
Stuffing box 50
Outer step 51
Stuffing-box 52
Fillet surface 53
Clip 60
Link slot 61
Bevel gearing 70
Sealing ring 81
Gasket ring 82
Stop collar 83
Metal stiffening ring 84
Pressing plate 85
Gland 86
Filler assembly 90
Packing seat 91
Knit graphite annulus 92
Soft graphite ring 93
Balance pipe 94
Valve stem nut 95
Ball bearing 96
Specific embodiment
A preferred embodiment is named, and completely illustrates the utility model in conjunction with attached drawing to become apparent from.
Fig. 1-Fig. 3 shows a kind of high-pressure hydrogenation screw down nonreturn valve comprising has: valve body 10, bracket 20, flap 30, valve Bar 40, stuffing box 50, clip 60 and bevel gearing 70, stuffing box 50, flap 30 and valve rod 40 are located in valve body 10, valve rod 40 Across stuffing box 50, bracket 20 is connected to valve body 10 by clip 60, and link slot 61, bracket 20 and valve body 10 are provided in clip 60 It is respectively equipped with the bearing attachment 22 and valve body interconnecting piece 14 of outwardly convex, bearing attachment 22 and the card of valve body interconnecting piece 14 are set In in link slot 61.The top and bottom of valve rod 40 are separately connected bevel gearing 70 and flap 30.
In the present embodiment, realize that valve body 10 and the assembling of 20 phase of bracket only need to be by the bearing attachments 22 and valve body of bracket 20 10 valve body interconnecting piece 14 is arranged in the link slot 61 of clip 60, then locks clip 60.Utilize 60 structure of clip It can be realized and quickly connected between valve body 10 and bracket 20, improve the convenience for connecting or dismantling between valve body 10 and bracket 20, Improve the efficiency of assembly.
As shown in figure 3, when in order to guarantee that existing valve body 10 is connected with bracket 20, accurate positioning, the upper surface of valve body 10 Outside is provided with a positioning step 11, and lower end and the positioning step 11 of bracket 20 match.
In order to guarantee high-pressure hydrogenation screw down nonreturn valve can normal use, be not present internal leakage the problem of, it is necessary to assure fill out Between hopper 50 and valve body 10, good sealing state is between stuffing box 50 and valve rod 40.In the present embodiment, stuffing box 50 Outer peripheral surface be equipped with outer step 51, the inner groovy 12 around inner wall is provided on valve body 10, high-pressure hydrogenation screw down nonreturn valve further includes Sealing ring 81, gasket ring 82 and stop collar 83, stop collar 83 are arranged in inner groovy 12, and sealing ring 81, gasket ring 82 are along valve rod 40 Axial direction be arranged between outer step 51 and stop collar 83, sealing ring 81 is connected to the bottom surface of outer step 51.For the ease of that will limit Position ring 83 is arranged in inner groovy 12, and stop collar 83 is spliced by multiple circular arcs.In the present embodiment, stop collar 83 is by four parts It is spliced.
Matched using sealing ring 81, gasket ring 82, stop collar 83 with inner groovy 12, outer step 51 enable to valve body 10 with Pressure self-sealing effect is generated between stuffing box 50.Gas when high-pressure hydrogenation screw down nonreturn valve is installed on pipeline, in pipeline Body is able to enter the lumen of valve body 10, so that gas generates a upward thrust to the bottom of stuffing box 50.In this thrust Under the position-limiting action of stop collar 83, sealing ring 81 and gasket ring 82 are extruded, to ensure that between stuffing box 50 and valve body 10 Leakproofness.The pressure of gas is bigger in pipeline, and the extruding force that sealing ring 81 and gasket ring 82 are subject to is also bigger, 50 He of stuffing box Leakproofness between valve body 10 is also better.
As shown in Fig. 2, sealing ring 81 is interweaved by stainless steel metal knitmesh with soft graphite, it is remote in sealing ring 81 Three tops in the corner from outer step 51 are set there are three metal stiffening ring 84.It is mutual by stainless steel metal knitmesh and soft graphite Interweave 81 good airproof performance of sealing ring formed, stable structure.Three metal stiffening rings 84 can further enhance sealing ring 81 Strength and stability.
In addition, the inside of the upper surface of valve body 10 is equipped with step 13 in one, high-pressure hydrogenation screw down nonreturn valve further includes a pressure Plate 85, pressing plate 85 are placed on interior step 13, and stuffing box 50 is bolted in pressing plate 85.It can be to sealing ring using pressing plate 85 81, gasket ring 82, stop collar 83 generate pretightning force, to guarantee the initial sealing between valve body 10 and stuffing box 50.
The inside of stuffing box 50 is equipped with stuffing-box 52, and high-pressure hydrogenation screw down nonreturn valve further includes filler assembly 90 and filler Gland 86, filler assembly 90 are filled between stuffing-box 52 and valve rod 40, and gland 86 presses on the upper table of filler assembly 90 Face, gland 86 are bolted to pressing plate 85.Gland 86 presses on filler assembly 90, so that filler assembly 90 It is squeezed power to be deformed, to guarantee the leakproofness between valve rod 40 and stuffing box 50.
In the present embodiment, filler assembly 90 includes 91, two woollen yarn knitting graphite annulus 92 of Packing seat and multiple soft graphite rings 93, The axial alignment of Packing seat 91, two woollen yarn knittings graphite annulus 92 and multiple soft graphite rings 93 along valve rod 40, multiple soft graphite rings 93 are located between two woollen yarn knitting graphite annulus 92, and Packing seat 91 is connected to the bottom surface of stuffing-box 52.
In addition, in order to when filler assembly 90 is damaged, be conveniently replaceable filler assembly 90, the bottom surface of stuffing box 50 with Inner wall connected position is equipped with fillet surface 53, and valve rod 40 is equipped with the inverse sealing face 41 towards fillet surface 53, and inverse sealing face 41 can Press on fillet surface 53.Under the situation that pipeline does not stop working, when filler assembly 90, which is damaged, to be needed replacing, by valve rod 40 are lifted up, so that the pressing of inverse sealing face 41, to form sealing surface, ensure that valve rod 40 and stuffing box on fillet surface 53 Leakproofness between 50.Gland 86 is unclamped at this time, completes more changing jobs for filler assembly 90.
In addition, in order to enhance the wearability between flap 30 and valve body 10, the outer peripheral surface of flap 30 and valve body 10 Inner peripheral surface is equipped with wearing layer.In the present embodiment, the material of wearing layer is 21 alloy of Stellite.21 alloy of Stellite Impact resistance is stronger, and corrosion resistance is more preferable, and the outer surface processed is more smooth, to reduce the opening and closing torque of valve.
The axially extending guide groove 21 along valve rod 40 is provided on bracket 20, high-pressure hydrogenation screw down nonreturn valve further includes anti-rotation Plate 42, torsional stop 42 pass through guide groove 21 and are connected to valve rod 40.It can be avoided valve rod 40 using guide groove 21 and torsional stop 42 to exist Rotation is generated during moving up and down.In the present embodiment, direction board is additionally provided on bracket 20, torsional stop 42 and direction board cooperate It can show the open position of valve.
In the present embodiment, between 10 lumen of valve export end and valve body be equipped with balance pipe 94, can balance lumen and Outlet pressure reduces opening and closing torque.
In addition, being additionally provided with valve stem nut 95, a pair of of ball bearing 96, the ladder of valve stem nut 95 and valve rod 40 in bracket 20 Shape screw thread matches, and a pair of of ball bearing 96 is located at the two sides up and down of 95 convex shoulder of valve stem nut, to reduce rotating torque.
Although the foregoing describe specific embodiment of the present utility model, it will be appreciated by those of skill in the art that This is merely illustrative of, and the protection scope of the utility model is defined by the appended claims.Those skilled in the art Under the premise of without departing substantially from the principles of the present invention and essence, many changes and modifications may be made, But these change and modification each fall within the protection scope of the utility model.

Claims (10)

1. a kind of high-pressure hydrogenation screw down nonreturn valve, which is characterized in that it includes: valve body, bracket, flap, valve rod, stuffing box and Clip, the stuffing box, the flap and the valve rod are located in the valve body, and the valve rod passes through the stuffing box, described Bracket is connect by the clip with the valve body, link slot is provided in the clip, the bracket is set respectively with the valve body Outwardly convex bearing attachment and valve body interconnecting piece, the bearing attachment and the valve body interconnecting piece are arranged in the company In access slot.
2. high-pressure hydrogenation screw down nonreturn valve as described in claim 1, which is characterized in that opened on the outside of the upper surface of the valve body There is a positioning step, the lower end of the bracket matches with the positioning step.
3. high-pressure hydrogenation screw down nonreturn valve as described in claim 1, which is characterized in that the outer peripheral surface of the stuffing box is equipped with outer Step, is provided with the inner groovy around inner wall on the valve body, the high-pressure hydrogenation screw down nonreturn valve further include sealing ring, gasket ring and Stop collar, the stop collar are arranged in the inner groovy, and the sealing ring, the gasket ring are set along the axial card of the valve rod Between the outer step and the stop collar, the sealing ring is connected to the bottom surface of the outer step.
4. high-pressure hydrogenation screw down nonreturn valve as claimed in claim 3, which is characterized in that the sealing ring is knitted by stainless steel metal Net is interweaved with soft graphite, in the sealing ring far from the outer step corner three tops set there are three gold Belong to stiffening ring.
5. high-pressure hydrogenation screw down nonreturn valve as claimed in claim 3, which is characterized in that set on the inside of the upper surface of the valve body There is step in one, the high-pressure hydrogenation screw down nonreturn valve further includes a pressing plate, and the pressing plate is placed on the interior step, the pressure Plate is bolted to the stuffing box.
6. high-pressure hydrogenation screw down nonreturn valve as claimed in claim 5, which is characterized in that the inside of the stuffing box is equipped with filler Letter, the high-pressure hydrogenation screw down nonreturn valve further include filler assembly and gland, and the filler assembly is filled in the filler Between letter and the valve rod, the gland presses on the upper surface of the filler assembly, and the gland passes through bolt It is connected to the pressing plate.
7. high-pressure hydrogenation screw down nonreturn valve as claimed in claim 6, which is characterized in that the filler assembly include Packing seat, Two woollen yarn knitting graphite annulus and multiple soft graphite rings, the Packing seat, described two woollen yarn knitting graphite annulus and the multiple flexible stone For Mo Huan along the axial alignment of the valve rod, the multiple soft graphite ring is described to fill out between described two woollen yarn knitting graphite annulus Backing strap is connected to the bottom surface of the stuffing-box.
8. high-pressure hydrogenation screw down nonreturn valve as described in claim 1, which is characterized in that the bottom surface of the stuffing box and valve rod phase Vicinal has installed fillet surface, and the valve rod is equipped with the inverse sealing face towards the stuffing box, and the inverse sealing face can press In the fillet surface.
9. high-pressure hydrogenation screw down nonreturn valve as described in claim 1, which is characterized in that the outer peripheral surface of the flap and the valve The inner peripheral surface of body is equipped with wearing layer.
10. high-pressure hydrogenation screw down nonreturn valve as described in claim 1, which is characterized in that be provided on the bracket along the valve The axially extending guide groove of bar, the high-pressure hydrogenation screw down nonreturn valve further includes torsional stop, and the torsional stop passes through described lead The valve rod is connected to slot.
CN201821682788.9U 2018-10-17 2018-10-17 High-pressure hydrogenation screw down nonreturn valve Active CN209041577U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201821682788.9U CN209041577U (en) 2018-10-17 2018-10-17 High-pressure hydrogenation screw down nonreturn valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201821682788.9U CN209041577U (en) 2018-10-17 2018-10-17 High-pressure hydrogenation screw down nonreturn valve

Publications (1)

Publication Number Publication Date
CN209041577U true CN209041577U (en) 2019-06-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201821682788.9U Active CN209041577U (en) 2018-10-17 2018-10-17 High-pressure hydrogenation screw down nonreturn valve

Country Status (1)

Country Link
CN (1) CN209041577U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112228568A (en) * 2020-10-27 2021-01-15 无锡隆盛科技股份有限公司 Production process of lift valve for hydrogen energy fuel cell

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112228568A (en) * 2020-10-27 2021-01-15 无锡隆盛科技股份有限公司 Production process of lift valve for hydrogen energy fuel cell

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