CN106523751A - Explosion-proof device of oil field oily sludge treatment equipment - Google Patents
Explosion-proof device of oil field oily sludge treatment equipment Download PDFInfo
- Publication number
- CN106523751A CN106523751A CN201611249180.2A CN201611249180A CN106523751A CN 106523751 A CN106523751 A CN 106523751A CN 201611249180 A CN201611249180 A CN 201611249180A CN 106523751 A CN106523751 A CN 106523751A
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- Prior art keywords
- valve
- valve plate
- plate
- explosion
- muscle
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/12—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side weight-loaded
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/164—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side and remaining closed after return of the normal pressure
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
Abstract
The invention provides an explosion-proof device of oil field oily sludge treatment equipment and relates to the technical field of safety protection of the oil field oily sludge treatment equipment. The explosion-proof device is provided for solving the problems that an existing explosion-proof device is small in release aperture, long in pressure relief time and low in speed, is likely to be damaged in the pressure relief process, cannot automatically reset after pressure relief and affects continuous production. A valve plate of the explosion-proof device is connected with a valve body through a first rotary shaft. The valve plate presses a seal ring on the valve body tightly through self-weight to realize sealing. The valve plate rotates with the first rotary shaft as the circle center. When the pressure in a valve exceeds the self-weight of the valve plate, the valve plate is bounced up. The bounced scope of the valve plate is controlled through a plurality of springs and a rubber plate on the upper portion of the valve body. The bounced inertia of the valve plate is subjected to buffering and pressure releasing. The valve plate is bounced to the highest point and then is reset under the action of self-weight. The explosion-proof device is applied to a pyrolyzing furnace of the oily sludge treatment equipment.
Description
Technical field
The present invention relates to the security protection technology field of Sludge in Oilfields processing equipment, and in particular to a kind of oil field oil-containing
The explosion-protection equipment of sludge treatment device.
Background technology
Explosion-proof valve as a kind of special safety valve, release fire-gas-explosion when the pressure that produces, be a kind of impact
Dynamic pressure, existence time is short, and decay fast advantage.Different fields of employment, the version of explosion-proof valve are not quite similar.Oil-containing
The pyrolysis oven of sludge treatment device, produces flammable and explosive substance in the course of the work, and flammable and explosive substance includes that fixed gas, oil steam
There is explosion danger in vapour, combustible dust, these flammable and explosive substances, affect the problem of the work safety of pyrolysis oven.
Existing explosion-protection equipment presence is released, and bore is little, and venting duration is long, and speed is slow, and easily causes in pressure leak process certainly
The damage of body, it is impossible to automatically reset after pressure release, the problem for affecting production persistently to carry out.
The content of the invention
Release that bore is little the invention aims to solve existing explosion-protection equipment and exist, venting duration is long, and speed is slow,
And the damage of itself is easily caused in pressure leak process, it is impossible to and automatically reset after pressure release, the problem for affecting production persistently to carry out.Enter
And a kind of explosion-protection equipment of Sludge in Oilfields processing equipment is provided.
The technical scheme is that：
A kind of explosion-protection equipment of Sludge in Oilfields processing equipment, it includes valve body, valve plate, baffle plate base plate, rubber slab, close
Seal base plate, sealing ring, first rotating shaft, the second rotating shaft, two valve arm, multiple baffle plate axis of guides and multiple springs；
Valve body includes valve seat, two flanges, the first connecting plate and two the second connecting plates；
Valve seat is hollow cylinder valve seat, and the upper and lower ends of valve seat are respectively fixedly connected with a flange, two the second connecting plates
Lower end be fixedly connected with the side wall of valve seat, two the second connecting plates are vertically arranged, and two the second connecting plates are in level side
To laid out in parallel, the left and right two ends on the inside of the upper end of two the second connecting plates respectively with the first connecting plate are fixedly connected；
Multiple baffle plate axis of guides are vertically mounted on the first connecting plate of valve body, and multiple baffle plate axis of guides be arranged in parallel,
Multiple springs are set on multiple baffle plate axis of guides, and the upper end of multiple baffle plate axis of guides is by multiple nuts and valve body
The first connecting plate be fixedly connected, the upper end of multiple baffle plate axis of guides is affixed with the upper surface screw thread of baffle plate base plate, baffle plate bottom
The lower surface of plate is fixedly connected with rubber slab by multiple screws；
Valve plate includes valve plate base, the 3rd valve plate muscle, valve plate main body, two the first valve plate muscle and two the second valve plate muscle；
Valve plate base is circular valve plate base, and valve plate main body is annular valve plate main body, and valve plate main body is fixedly welded on valve plate
On base, two the first valve plate muscle and the equal parallel arrangement of two the second valve plate muscle are fixedly welded in the upper surface of valve plate base
The parallel direction of portion, two the first valve plate muscle and two the second valve plate muscle is directed to two the second connecting plate sides on valve body,
Two the first valve plate muscle are located at the inner side of two the second valve plate muscle, and the 3rd valve plate muscle is arranged on the upper surface of valve plate base, and the 3rd
Valve plate muscle is vertically arranged with two the first valve plate muscle, and two grooves are provided with the 3rd valve plate muscle；
The lower surface of valve plate base is arranged on valve body by affixed sealing ring base plate, and sealing ring is arranged on sealing ring bottom
In groove on plate；
One end of two valve arm is through two grooves on the 3rd valve plate muscle and by two in the second rotating shaft and valve plate
First valve plate muscle and two the second valve plate muscle connections, the other end of two valve arm is by two second in first rotating shaft and valve body
Connecting plate is rotatably connected.
Further, valve plate is rotated with the second rotating shaft as axle.
Further, the anglec of rotation of valve plate be A, A=0 °～60 °.
Further, valve body and valve plate are metalwork welding fabrication.
Further, sealing ring is nitrile rubber.
Further, it also includes two split pins, and the second rotating shaft is respectively arranged at two ends with a pin-and-hole, two split pins
It is inserted in the pin-and-hole at the second rotating shaft two ends respectively.
Further, it also includes two axle sleeves, between two the second connecting plates first in two valve arm and valve body
Rotating shaft is provided with two axle sleeves.
Further, it also includes two packing rings, and two packing rings are arranged between two valve arm and two split pins the
In two rotating shafts.
The present invention is had the effect that compared with prior art：
1st, the present invention is arranged on pyrolysis oven, and when pyrolysis furnace pressure is sharply increased, valve plate 2 can be automatically opened up to be carried out
Pressure release, is automatically reset after pressure release under gravity, so as to avoid explosion danger.
2nd, pyrolysis oven can produce substantial amounts of explosive material at work so that the pressure increase in pyrolysis oven, the present invention
Valve body pressure release section it is big, can be by pyrolysis oven rapid pressure release, and then the work that enable pyrolysis oven safe.
3rd, on the one hand, the valve body and valve plate of the present invention is metalwork welding fabrication, and simple structure is easy to manufacture, reduces
Substantial amounts of manufacturing cost；On the other hand, the present invention installs multiple springs 6 and rubber slab 9 on the top of valve body 1, when valve internal pressure
When power exceedes the deadweight of valve plate 2, valve plate 2 is upspring, by the amplitude that multiple springs 6 and rubber slab 9 on 1 top of valve body are upspring to which
It is controlled, and row buffering is entered to the inertia of upspringing of valve plate 2 and lets out power；2 bullet of valve plate is resetted to peak in the presence of deadweight,
The carrying out of production, the substantial amounts of production time of saving so that production efficiency improves more than 50 are not interfered with.
Description of the drawings
Fig. 1 is the stereogram of the present invention；Fig. 2 is the front view of Fig. 1；Fig. 3 is the side view of Fig. 1；Fig. 4 is the vertical view of Fig. 1
Figure；Fig. 5 is the front view of valve body；Fig. 6 is the side view of Fig. 5；Fig. 7 is the front view of valve plate；Fig. 8 is the side view of Fig. 7.
Specific embodiment
Specific embodiment one：Present embodiment is illustrated with reference to Fig. 1 to Fig. 8, a kind of oil field oil-containing of present embodiment is dirty
The explosion-protection equipment of mud processing equipment, it includes valve body 1, valve plate 2, baffle plate base plate 7, rubber slab 9, sealing ring base plate 10, sealing ring
11st, first rotating shaft 12,16, two valve arm 3 of the second rotating shaft, multiple baffle plate axis of guides 5 and multiple springs 6；
Valve body 1 includes valve seat 1-1, two flange 1-2, the first connecting plate 1-3 and two the second connecting plate 1-4；
Valve seat 1-1 is hollow cylinder valve seat, and the upper and lower ends of valve seat 1-1 are respectively fixedly connected with a flange 1-2, two the
The lower end of two connecting plate 1-4 is fixedly connected with the side wall of valve seat 1-1, and two the second connecting plate 1-4 are vertically arranged, and two
Two connecting plate 1-4 laid out in parallel in the horizontal direction, on the inside of the upper end of two the second connecting plate 1-4 respectively with the first connecting plate 1-3
Left and right two ends be fixedly connected；
Multiple baffle plate axis of guides 5 are vertically mounted on the first connecting plate 1-3 of valve body 1, and multiple baffle plate axis of guides 5 are parallel
Arrange, multiple springs 6 are set on multiple baffle plate axis of guides 5, the upper end of multiple baffle plate axis of guides 5 passes through multiple nuts
It is fixedly connected with the first connecting plate 1-3 on valve body 1, the upper surface spiral shell of the upper end of multiple baffle plate axis of guides 5 with baffle plate base plate 7
Line is affixed, and the lower surface of baffle plate base plate 7 is fixedly connected with rubber slab 9 by multiple screws；
Valve plate 2 includes valve plate base 2-1, the 3rd valve plate muscle 2-2, valve plate main body 2-3, two the first valve plate muscle 2-4 and two
Individual second valve plate muscle 2-5；
Valve plate base 2-1 is circular valve plate base, and valve plate main body 2-3 is annular valve plate main body, and valve plate main body 2-3 fixes weldering
It is connected on valve plate base 2-1, the equal parallel arrangements of two the first valve plate muscle 2-4 and two the second valve plate muscle 2-5 are fixedly welded on valve
The parallel direction of the middle part of the upper surface of plate base 2-1, two the first valve plate muscle 2-4 and two the second valve plate muscle 2-5 is directed to
Two the second connecting plate 1-4 sides on valve body 1, two the first valve plate muscle 2-4 are located at the inner side of two the second valve plate muscle 2-5,
3rd valve plate muscle 2-2 is arranged on the upper surface of valve plate base 2-1, and the 3rd valve plate muscle 2-2 is vertical with two the first valve plate muscle 2-4 to be set
Put, on the 3rd valve plate muscle 2-2, be provided with two grooves；
The lower surface of valve plate base 2-1 is arranged on valve body 1 by affixed sealing ring base plate 10, and sealing ring 11 is arranged on
In groove on sealing ring base plate 10；
One end of two valve arm 3 is through two grooves on the 3rd valve plate muscle 2-2 and by the second rotating shaft 16 and valve plate 2
Two the first valve plate muscle 2-4 and two the second valve plate muscle 2-5 connection, the other end of two valve arm 3 by first rotating shaft 12 with
Two the second connecting plate 1-4 on valve body 1 are rotatably connected.
Specific embodiment two：Present embodiment is illustrated with reference to Fig. 1, the valve plate 2 of present embodiment with the second rotating shaft 12 is
Axle is rotated.It is arranged such, when pyrolysis furnace pressure is sharply increased, valve plate 2 can be automatically opened up carries out pressure release, after pressure release
Automatically reset under gravity, so as to avoid explosion danger.Other compositions and annexation and specific embodiment one
It is identical.
Specific embodiment three：Present embodiment is illustrated with reference to Fig. 2, the anglec of rotation of the valve plate 2 of present embodiment is A, A
=0 °～60 °.Other compositions and annexation are identical with specific embodiment one or two.
Specific embodiment four：With reference to Fig. 1 and Fig. 2 explanation present embodiments, the valve body 1 and valve plate 2 of present embodiment is equal
For metalwork welding fabrication.It is arranged such, ensure that the working strength of valve body 1 and valve plate 2, and simple structure, it is easy to manufacture,
Reduce substantial amounts of manufacturing cost.Other compositions and annexation and specific embodiment one, two or three are identical.
Specific embodiment five：Present embodiment is illustrated with reference to Fig. 2, the sealing ring 11 of present embodiment is nitrile rubber.
It is arranged such, sealing ring 11 can play a part of buffering to the inertia of upspringing of valve plate.Other composition and annexation with it is concrete
Embodiment one, two, three or four are identical.
Specific embodiment six：Present embodiment is illustrated with reference to Fig. 1, present embodiment also includes two split pins 14, the
Two rotating shafts 16 are respectively arranged at two ends with a pin-and-hole, and two split pins 14 are inserted in the pin-and-hole at 16 two ends of the second rotating shaft respectively.
It is arranged such, two valve arm 3 can be fixedly connected with the second rotating shaft 16.Other compositions and annexation and specific embodiment
First, two, three, four or five are identical.
Specific embodiment seven：With reference to Fig. 1 and Fig. 5 explanation present embodiments, present embodiment also includes two axle sleeves 13,
The first rotating shaft 12 between two the second connecting plate 1-4 in two valve arm 3 and valve body 1 is provided with two axle sleeves 13.So set
Put, support can be played a part of with two the second connecting plate 1-4 on valve body 1 to two valve arm 3.Other compositions and connection are closed
System is identical with specific embodiment one, two, three, four, five or six.
Specific embodiment eight：With reference to Fig. 1 illustrate present embodiment, present embodiment also include two packing rings 15, two
Packing ring 15 is arranged in the second rotating shaft 16 between two valve arm 3 and two split pins 14.It is arranged such, in the second rotating shaft 16
Two valve arm 3 play a part of fixed protection.Other compositions and annexation and specific embodiment one, two, three, four, five,
Six or seven is identical.
Operation principle：
With reference to Fig. 1, the present invention include valve body 1, valve plate 2, first rotating shaft 12, rubber slab 9, sealing ring 11 and, multiple springs
6, valve plate 2 is connected with valve body 1 by first rotating shaft 12, and valve plate 2 realizes sealing by the sealing ring 11 on weight compression valve body 1；Valve
Plate 2 can be rotated by the center of circle of first rotating shaft；When in valve, pressure exceedes the deadweight of valve plate 2, valve plate 2 is upspring, by 1 top of valve body
Multiple springs 6 and rubber slab 9 are controlled to the amplitude which is upspring, and are entered row buffering to the inertia of upspringing of valve plate 2 and let out power；Valve plate
2 bullets are resetted to peak in the presence of deadweight.
Claims (8)
1. a kind of explosion-protection equipment of Sludge in Oilfields processing equipment, it is characterised in that：It includes valve body (1), valve plate (2), gear
Plate base plate (7), rubber slab (9), sealing ring base plate (10), sealing ring (11), first rotating shaft (12), the second rotating shaft (16), two
Valve arm (3), multiple baffle plate axis of guides (5) and multiple springs (6)；
Valve body (1) includes valve seat (1-1), two flanges (1-2), the first connecting plate (1-3) and two the second connecting plates (1-4)；
Valve seat (1-1) is hollow cylinder valve seat, and the upper and lower ends of valve seat (1-1) are respectively fixedly connected with a flange (1-2), two
The lower end of the second connecting plate (1-4) is fixedly connected with the side wall of valve seat (1-1), and two the second connecting plates (1-4) are vertically arranged,
And two the second connecting plates (1-4) laid out in parallel in the horizontal direction, respectively with the inside of the upper end of two the second connecting plates (1-4)
The left and right two ends of one connecting plate (1-3) are fixedly connected；
Multiple baffle plate axis of guides (5) are vertically mounted on first connecting plate (1-3) of valve body (1), and multiple baffle plate axis of guides (5)
It is arranged in parallel, multiple springs (6) are set on multiple baffle plate axis of guides (5), the upper end of multiple baffle plate axis of guides (5) leads to
Cross multiple nuts to be fixedly connected with the first connecting plate (1-3) on valve body (1), the upper end of multiple baffle plate axis of guides (5) with gear
The upper surface screw thread of plate base plate (7) is affixed, and the lower surface of baffle plate base plate (7) is fixedly connected with rubber slab (9) by multiple screws；
Valve plate (2) includes valve plate base (2-1), the 3rd valve plate muscle (2-2), valve plate main body (2-3), two the first valve plate muscle (2-
4) He two the second valve plate muscle (2-5)；
Valve plate base (2-1) is circular valve plate base, and valve plate main body (2-3) is annular valve plate main body, and valve plate main body (2-3) is fixed
It is welded on valve plate base (2-1), two the first valve plate muscle (2-4) and two the second valve plate muscle (2-5) parallel arrangements are fixed
It is welded on the middle part of the upper surface of valve plate base (2-1), two the first valve plate muscle (2-4) and two the second valve plate muscle (2-5)
Parallel direction is directed to two the second connecting plate (1-4) sides on valve body (1), and two the first valve plate muscle (2-4) are positioned at two
The inner side of the second valve plate muscle (2-5), the 3rd valve plate muscle (2-2) are arranged on the upper surface of valve plate base (2-1), the 3rd valve plate muscle
(2-2) it is vertically arranged with two the first valve plate muscle (2-4), on the 3rd valve plate muscle (2-2), opens up two grooves；
By affixed sealing ring base plate (10) on valve body (1), sealing ring (11) sets for the lower surface of valve plate base (2-1)
Put in the groove on sealing ring base plate (10)；
One end of two valve arm (3) is through two grooves on the 3rd valve plate muscle (2-2) and passes through the second rotating shaft (16) and valve plate
(2) two the first valve plate muscle (2-4) on and two the second valve plate muscle (2-5) connections, the other end of two valve arm (3) is by the
One rotating shaft (12) is rotatably connected with two the second connecting plates (1-4) on valve body (1).
2. the explosion-protection equipment of a kind of Sludge in Oilfields processing equipment according to claim 1, it is characterised in that：Valve plate
(2) rotated with the second rotating shaft (12) as axle.
3. the explosion-protection equipment of a kind of Sludge in Oilfields processing equipment according to claim 2, it is characterised in that：Valve plate
(2) the anglec of rotation be A, A=0 °～60 °.
4. the explosion-protection equipment of a kind of Sludge in Oilfields processing equipment according to claim 1, it is characterised in that：Valve body
And valve plate (2) is metalwork welding fabrication (1).
5. the explosion-protection equipment of a kind of Sludge in Oilfields processing equipment according to claim 1, it is characterised in that：Sealing ring
(11) it is nitrile rubber.
6. the explosion-protection equipment of a kind of Sludge in Oilfields processing equipment according to claim 1, it is characterised in that：It also wraps
Include two split pins (14), the second rotating shaft (16) is respectively arranged at two ends with a pin-and-hole, and two split pins (14) are inserted into respectively
In the pin-and-hole at the second rotating shaft (16) two ends.
7. the explosion-protection equipment of a kind of Sludge in Oilfields processing equipment according to claim 1, it is characterised in that：It also wraps
Two axle sleeves (13) are included, the first rotating shaft (12) between two the second connecting plates (1-4) on two valve arm (3) and valve body (1)
It is provided with two axle sleeves (13).
8. the explosion-protection equipment of a kind of Sludge in Oilfields processing equipment according to claim 1, it is characterised in that：It also wraps
Two packing rings (15) are included, two packing rings (15) are arranged on the second rotating shaft between two valve arm (3) and two split pins (14)
(16) on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611249180.2A CN106523751A (en) | 2016-12-29 | 2016-12-29 | Explosion-proof device of oil field oily sludge treatment equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611249180.2A CN106523751A (en) | 2016-12-29 | 2016-12-29 | Explosion-proof device of oil field oily sludge treatment equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106523751A true CN106523751A (en) | 2017-03-22 |
Family
ID=58338572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611249180.2A Pending CN106523751A (en) | 2016-12-29 | 2016-12-29 | Explosion-proof device of oil field oily sludge treatment equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106523751A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108758042A (en) * | 2018-07-12 | 2018-11-06 | 上海核阀门股份有限公司 | Self-operated type casing gas determines valve |
| CN113586775A (en) * | 2021-07-26 | 2021-11-02 | 永嘉瑞杰阀门制造有限公司 | Explosion-proof valve |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3933173A (en) * | 1968-02-26 | 1976-01-20 | Yoshio Kajita | Check valve |
| CN2577068Y (en) * | 2002-10-10 | 2003-10-01 | 刘恩山 | Explosion relief valve |
| CN2867013Y (en) * | 2005-12-15 | 2007-02-07 | 石家庄太行冶金阀门有限公司 | Pneumatic spring pressing explosion releasing valve |
| CN202613044U (en) * | 2012-05-23 | 2012-12-19 | 薛道成 | Automatic opening and closing type safe pressure relief explosion-proof device |
| CN203498311U (en) * | 2013-09-30 | 2014-03-26 | 西安华江环保科技股份有限公司 | Overpressure explosion venting device of ground dust removal system |
| CN204677841U (en) * | 2015-03-15 | 2015-09-30 | 辽宁圣赫机械制造成套设备有限公司 | A kind of electricity flutters the vertical explosive valve of level of tar device top venting of dust explosion |
| CN206290785U (en) * | 2016-12-29 | 2017-06-30 | 哈尔滨金源伟业环保科技有限公司 | A kind of explosion-protection equipment of Sludge in Oilfields processing equipment |
-
2016
- 2016-12-29 CN CN201611249180.2A patent/CN106523751A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3933173A (en) * | 1968-02-26 | 1976-01-20 | Yoshio Kajita | Check valve |
| CN2577068Y (en) * | 2002-10-10 | 2003-10-01 | 刘恩山 | Explosion relief valve |
| CN2867013Y (en) * | 2005-12-15 | 2007-02-07 | 石家庄太行冶金阀门有限公司 | Pneumatic spring pressing explosion releasing valve |
| CN202613044U (en) * | 2012-05-23 | 2012-12-19 | 薛道成 | Automatic opening and closing type safe pressure relief explosion-proof device |
| CN203498311U (en) * | 2013-09-30 | 2014-03-26 | 西安华江环保科技股份有限公司 | Overpressure explosion venting device of ground dust removal system |
| CN204677841U (en) * | 2015-03-15 | 2015-09-30 | 辽宁圣赫机械制造成套设备有限公司 | A kind of electricity flutters the vertical explosive valve of level of tar device top venting of dust explosion |
| CN206290785U (en) * | 2016-12-29 | 2017-06-30 | 哈尔滨金源伟业环保科技有限公司 | A kind of explosion-protection equipment of Sludge in Oilfields processing equipment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108758042A (en) * | 2018-07-12 | 2018-11-06 | 上海核阀门股份有限公司 | Self-operated type casing gas determines valve |
| CN113586775A (en) * | 2021-07-26 | 2021-11-02 | 永嘉瑞杰阀门制造有限公司 | Explosion-proof valve |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170322 |
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| RJ01 | Rejection of invention patent application after publication |