CN104791543A - Mechanical emergency shutdowm valve - Google Patents
Mechanical emergency shutdowm valve Download PDFInfo
- Publication number
- CN104791543A CN104791543A CN201510190935.5A CN201510190935A CN104791543A CN 104791543 A CN104791543 A CN 104791543A CN 201510190935 A CN201510190935 A CN 201510190935A CN 104791543 A CN104791543 A CN 104791543A
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- China
- Prior art keywords
- lock
- self
- inserted bar
- guide rail
- groove
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Classifications
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- 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
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- 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
- Preventing Unauthorised Actuation Of Valves (AREA)
Abstract
The invention provides a mechanical emergency shutdowm valve which comprises a valve element, a regulation mechanism and a self-lock insertion rod. An annular self-lock opening clamping groove and an annular self-lock closing clamping groove are formed in the valve element; the regulation mechanism comprises two transverse drive parts and a regulation support clamped between the transverse drive parts, the external air pressure drives the regulation support to move transversely by controlling at least one transverse drive part, a concave guide rail with two high sides high and low middle is arranged on the regulation support in the transverse direction, and downward concaved limit clamping grooves are formed in the two ends of the guide rail; the self-lock insertion rod can penetrate through the regulation support in a longitudinal moving mode, is erected on the guide rail and extends to one side of the valve element, the self-lock insertion rod relatively slides on the guide rail to drive the self-lock insertion rod to do reciprocation motion in the longitudinal direction, and the extension end of the self-lock insertion rod is fixedly clamped with or separated from the self-lock opening clamping groove and the self-lock closing clamping groove. The mechanical emergency shutdowm valve is easy and convenient to install and regulate and reliable in operation.
Description
Technical field
The present invention relates to valve technology field, particularly the urgent block valve of a kind of mechanical type.
Background technique
Urgent block valve can realize wellhead over-pressure and single well gas pipeline leaks or the automatic break-in facility of booster, thus makes predictable risk controlled, and can drop to minimum by the loss that this risk is brought.The core of urgent block valve mainly carries out the adjustment of super-low voltage, ultrahigh pressure by which kind of mode, and the urgent block valve that prior art uses comprises mechanical type, hydraulic type, pressure sensing type etc.Wherein, the urgent block valve of mechanical type is mainly regulated by lever-type structure, to be with movable valve plug action, thus reaches when super-low voltage, ultrahigh pressure, makes spool move the object of closedown.But, prior art use lever-type complex structure, cause the urgent block valve of mechanical type install, debugging very inconvenient.
Summary of the invention
The object of this invention is to provide a kind of structure simple, and install, debug the urgent block valve of mechanical type simply and easily.
For achieving the above object, the invention provides the urgent block valve of a kind of mechanical type, it comprises: spool, described spool is provided with the opened self-locking draw-in groove of ring-type and closes self-locking draw-in groove; Controlling mechanism, the adjustment support comprising two horizontal driver parts and be clamped between two described horizontal driver parts, external pressure drives described adjustment support transverse shifting by controlling at least one described horizontal driver part, described adjustment support is transversely provided with the low guide rail in spill between the senior middle school of both sides, and is provided with recessed spacing draw-in groove at the two ends of described guide rail; With from inserted bar of lock, described adjustment support can be run through with vertically moving and set up on described guide rail, and describedly to extend towards described spool side from inserted bar of lock, by described from inserted bar of lock relative sliding on described guide rail, longitudinally move back and forth from inserted bar of lock described in driving, and the described extending end from inserted bar of lock fixes mutually with described opened self-locking draw-in groove and described closedown self-locking draw-in groove or is separated respectively.
The urgent block valve of mechanical type as above, wherein, the described extending end from inserted bar of lock is provided with plate, and described plate is provided with the bayonet socket that can match with described opened self-locking draw-in groove or described closedown self-locking draw-in groove.
The urgent block valve of mechanical type as above, wherein, describedly on inserted bar of lock, be arranged with driving spring, one end of described driving spring is resisted against on described adjustment support, and the other end is resisted against on described plate.
The urgent block valve of mechanical type as above, wherein, being provided with in the described junction from inserted bar of lock and described guide rail can along the pulley of described slide.
The urgent block valve of mechanical type as above, wherein, one in two described horizontal driver parts is cylinder, another is elastic reset member, the piston rod of described cylinder is connected with the side of described adjustment support, the described piston rod that external pressure controls described cylinder is flexible to drive described adjustment support transverse shifting, and one end of described elastic reset member is fixed, and its other end is connected with the opposite side of described adjustment support.
The urgent block valve of mechanical type as above, wherein, described elastic reset member comprises fixed plate, connecting plate, Returnning spring and runs through the flexible rod of described Returnning spring, one end of described flexible rod can movably through described fixed plate, the other end of described flexible rod is connected by the described opposite side of described connecting plate with described adjustment support, and the two ends of described Returnning spring are resisted against on described fixed plate and described connecting plate respectively.
The urgent block valve of mechanical type as above, wherein, described adjustment support is regulating block, described regulating block transversely offers groove and is formed with two transversely symmetrical cell walls, all form the low described guide rail in spill between the senior middle school of both sides in the upper end of two described cell walls, and all form recessed described spacing draw-in groove at the two ends of two described cell walls.
Compared with prior art, advantage of the present invention is as follows:
The urgent block valve of mechanical type provided by the invention is by controlling mechanism and coordinating from inserted bar of lock, spool can be fast and effeciently made automatically to close when air pressure reaches ultrahigh pressure or super-low voltage, and controlling mechanism simple with the structure from inserted bar of lock, easy to assembly, coordinate simple and reliable, thus make the installation of the urgent block valve of mechanical type, debug simple and convenient and reliable.
Accompanying drawing explanation
The following drawings is only intended to schematically illustrate the present invention and explain, not delimit the scope of the invention.Wherein:
Fig. 1 is the structural representation of the urgent block valve of mechanical type that one embodiment of the invention provides;
Fig. 2 is the sectional structure schematic diagram regulating support in the urgent block valve of mechanical type shown in Fig. 1;
Fig. 3 is the partial structurtes schematic diagram in the urgent block valve of mechanical type shown in Fig. 1 when inserted bar of lock makes spool be in opening state;
Fig. 4 is the partial structurtes schematic diagram in the urgent block valve of mechanical type shown in Fig. 1 when inserted bar of lock makes spool be in closed condition.
Drawing reference numeral illustrates:
1-spool, 11-opened self-locking draw-in groove, 12-closes self-locking draw-in groove, and 2-regulates support, 21-guide rail, the spacing draw-in groove of 22-, 3-from inserted bar of lock, 31-plate, 311-bayonet socket, 4-driving spring, 5-pulley, 6-cylinder, 61-piston rod, 7-Returnning spring, 8-flexible rod, 9-fixed plate, 10-connecting plate.
Embodiment
In order to have clearer understanding to technological scheme of the present invention, object and effect, existing accompanying drawings the specific embodiment of the present invention.
As shown in Figure 1, the invention provides the urgent block valve of a kind of mechanical type, comprising: spool 1, controlling mechanism and from inserted bar of lock 3, wherein, spool 1 is provided with the opened self-locking draw-in groove 11 of ring-type and closes self-locking draw-in groove 12, the adjustment support 2 that controlling mechanism comprises two horizontal driver parts and is clamped between two horizontal driver parts, adjustment support 2 is transversely provided with the low guide rail 21 in spill between the senior middle school of both sides, and is provided with recessed spacing draw-in groove 22 at the two ends of guide rail 21, can run through with vertically moving from inserted bar of lock 3 and regulate support 2 and set up on guide rail 21, and extend towards spool 1 side from inserted bar of lock 3, when external pressure is in the range of working pressure of the urgent block valve of mechanical type, external pressure to act at least one horizontal driver part and controls it and produces drive force and regulate support 2 transverse reciprocating to move, now, with the transverse shifting regulating support 2, from the middle relative sliding of inserted bar of lock 3 at guide rail 21, and fix with opened self-locking draw-in groove 11 phase from the extending end of inserted bar of lock 3, move to limit spool 1, spool 1 is made to be in opening state, when the range of working pressure of external pressure higher or lower than the urgent block valve of mechanical type, namely when air pressure reaches ultrahigh pressure or super-low voltage, external pressure to act at least one horizontal driver part and makes it produce drive force and regulates support 2 transverse shifting, now, with the transverse shifting regulating support 2, from the side relative sliding of inserted bar of lock 3 direction guiding rail 21, height due to guide rail 21 both sides is greater than middle height, cause and while inserted bar of lock 3 slides into the side of guide rail 21 relatively, longitudinal direction is moved, thus make to be separated from the extending end of inserted bar of lock 3 and opened self-locking draw-in groove 11, spool 1 loses closes from the moving-limiting of inserted bar of lock 3, and now under the effect of inertia, continue relative sliding on guide rail 21 from inserted bar of lock 3 until enter in spacing draw-in groove 22, height due to spacing draw-in groove 22 is less than the height of the both sides of guide rail 21, cause and longitudinally move down while inserted bar of lock 3 enters spacing draw-in groove 22, thus make to fix with closedown self-locking draw-in groove 12 phase from the extending end of inserted bar of lock 3, limit spool 1 to move, spool 1 is made to be in closed condition, and then ensure that spool 1 is closed automatically when external pressure is in ultrahigh pressure or super-low voltage, compared with the urgent block valve of the mechanical type used with prior art, the urgent block valve of mechanical type provided by the invention is by controlling mechanism and coordinating from inserted bar of lock 3, spool 1 can be fast and effeciently made automatically to close when air pressure reaches ultrahigh pressure or super-low voltage, and controlling mechanism is with simple from the structure of inserted bar of lock 3, easy to assembly, coordinate simple and reliable, thus make the installation of the urgent block valve of mechanical type, debug simple and convenient, and it is reliable.
It should be noted that, when the urgent block valve of mechanical type is used for realizing wellhead over-pressure and single well gas pipeline leaks or booster automatically blocks, its range of working pressure is 0.5MPa-5MPa.
In a concrete example of the present invention, as shown in Figure 1, one in two horizontal driver parts is cylinder 6, another is elastic reset member, as shown in Figure 2, support 2 is regulated to be regulating block, regulating block transversely offers groove and is formed with two transversely symmetrical cell walls, the low guide rail 21 in spill between the senior middle school of both sides is all formed in the upper end of two cell walls, and all form recessed spacing draw-in groove 22 at the two ends of two cell walls, the piston rod 61 of cylinder 6 is connected with the side of regulating block, one end of elastic reset member is fixed, its the other end is connected with regulating the opposite side of support 2, as shown in figures 1 and 3, when external pressure is in the range of working pressure of the urgent block valve of mechanical type, external pressure to act on cylinder 6 and promotes piston rod 61 and stretches out, now, regulating block transverse reciprocating under the promotion of air pressure and elastic reset member moves, and the transverse reciprocating with regulating block moves, from the middle relative sliding of inserted bar of lock 3 at guide rail 21, and fix with opened self-locking draw-in groove 11 phase from the extending end of inserted bar of lock 3, move to limit spool 1, make spool 1 be in opening state, as shown in Figure 1 and Figure 4, when the range of working pressure of external pressure higher than the urgent block valve of mechanical type, namely when air pressure reaches ultrahigh pressure, the thrust of piston rod 61 is greater than its own resilient of elastic reset member, external pressure to act on cylinder 6 and promotes piston rod 61 and stretches out, piston rod 61 promotes regulating block transverse shifting extruding elastic reset member, now, with the transverse shifting of regulating block, from the side relative sliding of inserted bar of lock 3 direction guiding rail 21 near cylinder 6, height due to guide rail 21 both sides is greater than middle height, cause and while inserted bar of lock 3 relatively slides to the side of guide rail 21, longitudinal direction is moved, thus make to be separated from the extending end of inserted bar of lock 3 and opened self-locking draw-in groove 11, spool 1 loses closes from the moving-limiting of inserted bar of lock 3, and now under the effect of inertia, continue relative sliding on guide rail 21 from inserted bar of lock 3 until enter in spacing draw-in groove 22, height due to spacing draw-in groove 22 is less than the height of the both sides of guide rail 21, cause and longitudinally move down while inserted bar of lock 3 enters spacing draw-in groove 22, thus make to fix with closedown self-locking draw-in groove 12 phase from the extending end of inserted bar of lock 3, limit spool 1 to move, spool 1 is made to be in closed condition, and then ensure that spool 1 is closed automatically when external pressure is in ultrahigh pressure, similarly, when the range of working pressure of external pressure lower than the urgent block valve of mechanical type, namely when air pressure reaches super-low voltage, the thrust of air pressure is less than the elastic force of elastic reset member, elastic reset member promotes regulating block extrusion piston bar 61, now, with the transverse shifting of regulating block, from the side relative sliding of inserted bar of lock 3 direction guiding rail 21 near elastic reset member, similarly, move on longitudinal while inserted bar of lock 3 relatively slides to the side of guide rail 21, thus make to be separated from the extending end of inserted bar of lock 3 and opened self-locking draw-in groove 11, spool 1 loses closes from the moving-limiting of inserted bar of lock 3, and now under the effect of inertia, continue relative sliding on guide rail 21 from inserted bar of lock 3 until enter in spacing draw-in groove 22, similarly, longitudinally move down while inserted bar of lock 3 enters spacing draw-in groove 22, thus make to fix with closedown self-locking draw-in groove 12 phase from the extending end of inserted bar of lock 3, limit spool 1 to move, spool 1 is made to be in closed condition, and then ensure that spool 1 is closed automatically when external pressure is in super-low voltage.
Certainly; two horizontal driver parts also can be other structures; such as: one in two horizontal driver parts is elastic reset member; another promotes to regulate the oil cylinder etc. of support transverse shifting for responding to ambient pressure change; do not repeat them here; as long as but can meet to drive under the control of external pressure regulate any existing structure of support transverse shifting or its simply replace, all should within protection scope of the present invention.
Further, as shown in Figure 1, elastic reset member comprises fixed plate 9, connecting plate 10, Returnning spring 7 and the flexible rod 8 running through Returnning spring 7, one end of flexible rod 8 can movably through fixed plate 9, fixed plate 9 is fixedly mounted in valve, the other end of flexible rod 8 is connected with regulating the opposite side of support 2 by connecting plate 10, make the transverse shifting of regulating block that flexible rod 8 can be driven to stretch out relative to fixed plate 9 or retract, the two ends of Returnning spring 7 are resisted against on fixed plate 9 and connecting plate 10 respectively, namely one end of Returnning spring 7 is fixed, its the other end can move linearly along flexible rod 8, thus make Returnning spring 7 can be produced elastic force by compression, wherein, the setting of flexible rod 8, leading role can be played to Returnning spring 7, thus ensure that Returnning spring 7 produces elastic force after compressing, the setting of connecting plate 10, then make Returnning spring 7 and regulate the connection between support 2 simple and convenient.
Alternatively, plate 31 is provided with from the extending end of inserted bar of lock 3, plate 31 is provided with opened self-locking draw-in groove 11 or can close the bayonet socket 311 that self-locking draw-in groove 12 matches, the setting of plate 31, make from inserted bar of lock 3 and opened self-locking draw-in groove 11 or close and coordinate simple and convenient between self-locking draw-in groove 12, thus making the opened self-locking of spool 1 or close self-locking simple and convenient.
Further, driving spring 4 is arranged with on inserted bar of lock 3, one end of driving spring 4 is resisted against and regulates on support 2, the other end is resisted against on plate 31, when longitudinal direction being moved when the side relatively sliding into guide rail 21 from inserted bar of lock 3, driving spring 4 is produced elastic force by compression, when continuing relative sliding under the effect of inserted bar of lock 3 at inertia on guide rail 21, enters in spacing draw-in groove 22 under the elastic force effect of inserted bar of lock 3 at driving spring 4.
Alternatively, the pulley 5 that can slide along guide rail 21 is being provided with from inserted bar of lock 3 and the junction of guide rail 21, pulley 5 the frictional force that can effectively reduce from producing between inserted bar of lock 3 and guide rail 21 is set, thus the impact reduced when frictional force is closed automatically on spool 1, and then spool 1 can be closed in time automatically when external pressure is in ultrahigh pressure or super-low voltage.
Certainly; in order to reduce the frictional force from producing between inserted bar of lock and guide rail; also can adopt and the modes such as bearing pin are set in the junction from inserted bar of lock and guide rail; do not repeat them here; as long as but can meet reduce simply replace from any existing structure of the frictional force produced between inserted bar of lock and guide rail or its, all should within protection scope of the present invention.
The specific works process of the urgent block valve of mechanical type provided by the invention is illustrated below in conjunction with accompanying drawing:
As shown in figures 1 and 3, when external pressure is in the range of working pressure of the urgent block valve of mechanical type, external pressure to act on cylinder 6 and promotes piston rod 61 and stretches out, now, regulating block transverse reciprocating under the promotion of piston rod 61 and Returnning spring 7 moves, and the transverse reciprocating with regulating block moves, pulley 5 on inserted bar of lock 3 is at the middle relative sliding of guide rail 21, and fix with opened self-locking draw-in groove 11 phase from the extending end of inserted bar of lock 3, move to limit spool 1, make spool 1 be in opening state, as shown in Figure 1 and Figure 4, when the range of working pressure of external pressure higher than the urgent block valve of mechanical type, namely when air pressure reaches ultrahigh pressure, external pressure to act on cylinder 6 and promotes piston rod 61 and stretches out, now, the thrust of piston rod 61 is greater than the elastic force of Returnning spring 7, piston rod 61 promotes regulating block transverse shifting pressed home spring 7, with the transverse shifting of regulating block, pulley 5 direction guiding rail 21 on inserted bar of lock 3 is near the side relative sliding of cylinder 6, height due to guide rail 21 both sides is greater than middle height, cause and while inserted bar of lock 3 relatively slides into the side of guide rail 21 under the drive of pulley 5, longitudinal direction is moved and compressible drive spring 4, thus make to be separated from the extending end of inserted bar of lock 3 and opened self-locking draw-in groove 11, spool 1 loses closes from the moving-limiting of inserted bar of lock 3, and the pulley 5 now under the effect of inertia on inserted bar of lock 3 continues relative sliding on guide rail 21 and enter in spacing draw-in groove 22 under the effect of driving spring 4, height due to spacing draw-in groove 22 is less than the height of the both sides of guide rail 21, longitudinally move down while causing pulley 5 to enter spacing draw-in groove 22, thus make to fix with closedown self-locking draw-in groove 12 phase from the extending end of inserted bar of lock 3, limit spool 1 to move, spool 1 is made to be in closed condition, and then ensure that spool 1 is closed automatically when external pressure is in ultrahigh pressure, similarly, when the range of working pressure of external pressure lower than the urgent block valve of mechanical type, namely when air pressure reaches super-low voltage, external pressure to act on cylinder 6 and promotes piston rod 61 and stretches out, now, the thrust of piston rod 61 is less than the elastic force of Returnning spring 7, Returnning spring 7 promotes regulating block extrusion piston bar 61, with the transverse shifting of regulating block, pulley 5 direction guiding rail 21 on inserted bar of lock 3 is near the side relative sliding of Returnning spring 7, similarly, move and compressible drive spring 4 on longitudinal while inserted bar of lock 3 relatively slides into the side of guide rail 21 under the drive of pulley 5, thus make to be separated from the extending end of inserted bar of lock 3 and opened self-locking draw-in groove 11, spool 1 loses closes from the moving-limiting of inserted bar of lock 3, and the pulley 5 now under the effect of inertia on inserted bar of lock 3 continues relative sliding on guide rail 21 and enter in spacing draw-in groove 22 under the effect of driving spring 4, similarly, longitudinally move down while inserted bar of lock 3 enters spacing draw-in groove 22, thus make to fix with closedown self-locking draw-in groove 12 phase from the extending end of inserted bar of lock 3, limit spool 1 to move, spool 1 is made to be in closed condition, and then ensure that spool 1 is closed automatically when external pressure is in super-low voltage.
In sum, compared with prior art, the urgent block valve of mechanical type provided by the invention is by controlling mechanism and coordinating from inserted bar of lock, spool can be fast and effeciently made automatically to close when air pressure reaches ultrahigh pressure or super-low voltage, and controlling mechanism simple with the structure from inserted bar of lock, easy to assembly, coordinate simple and reliable, thus make the installation of the urgent block valve of mechanical type, debug simple and convenient and reliable.
The foregoing is only the schematic embodiment of the present invention, and be not used to limit scope of the present invention.Any those of ordinary skill in the art, equivalent variations done under the prerequisite not departing from design of the present invention and principle and amendment, all should belong to the scope of protection of the invention.
Claims (7)
1. the urgent block valve of mechanical type, is characterized in that, the urgent block valve of described mechanical type comprises:
Spool, described spool is provided with the opened self-locking draw-in groove of ring-type and closes self-locking draw-in groove;
Controlling mechanism, the adjustment support comprising two horizontal driver parts and be clamped between two described horizontal driver parts, external pressure drives described adjustment support transverse shifting by controlling at least one described horizontal driver part, described adjustment support is transversely provided with the low guide rail in spill between the senior middle school of both sides, and is provided with recessed spacing draw-in groove at the two ends of described guide rail; With
From inserted bar of lock, described adjustment support can be run through with vertically moving and set up on described guide rail, and describedly to extend towards described spool side from inserted bar of lock, by described from inserted bar of lock relative sliding on described guide rail, longitudinally move back and forth from inserted bar of lock described in driving, and the described extending end from inserted bar of lock fixes mutually with described opened self-locking draw-in groove and described closedown self-locking draw-in groove or is separated respectively.
2. the urgent block valve of mechanical type according to claim 1, is characterized in that,
The described extending end from inserted bar of lock is provided with plate, and described plate is provided with the bayonet socket that can match with described opened self-locking draw-in groove or described closedown self-locking draw-in groove.
3. the urgent block valve of mechanical type according to claim 2, is characterized in that,
Describedly on inserted bar of lock, be arranged with driving spring, one end of described driving spring is resisted against on described adjustment support, and the other end is resisted against on described plate.
4. the urgent block valve of mechanical type according to claim 1, is characterized in that,
Being provided with in the described junction from inserted bar of lock and described guide rail can along the pulley of described slide.
5. the urgent block valve of mechanical type according to any one of claim 1 to 4, is characterized in that,
One in two described horizontal driver parts is cylinder, another is elastic reset member, the piston rod of described cylinder is connected with the side of described adjustment support, the described piston rod that external pressure controls described cylinder is flexible to drive described adjustment support transverse shifting, one end of described elastic reset member is fixed, and its other end is connected with the opposite side of described adjustment support.
6. the urgent block valve of mechanical type according to claim 5, is characterized in that,
Described elastic reset member comprises fixed plate, connecting plate, Returnning spring and runs through the flexible rod of described Returnning spring, one end of described flexible rod can movably through described fixed plate, the other end of described flexible rod is connected by the described opposite side of described connecting plate with described adjustment support, and the two ends of described Returnning spring are resisted against on described fixed plate and described connecting plate respectively.
7. the urgent block valve of mechanical type according to any one of claim 1 to 4, is characterized in that,
Described adjustment support is regulating block, described regulating block transversely offers groove and is formed with two transversely symmetrical cell walls, all form the low described guide rail in spill between the senior middle school of both sides in the upper end of two described cell walls, and all form recessed described spacing draw-in groove at the two ends of two described cell walls.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510190935.5A CN104791543B (en) | 2015-04-21 | 2015-04-21 | The urgent block valve of mechanical type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510190935.5A CN104791543B (en) | 2015-04-21 | 2015-04-21 | The urgent block valve of mechanical type |
Publications (2)
| Publication Number | Publication Date |
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| CN104791543A true CN104791543A (en) | 2015-07-22 |
| CN104791543B CN104791543B (en) | 2017-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510190935.5A Active CN104791543B (en) | 2015-04-21 | 2015-04-21 | The urgent block valve of mechanical type |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108662165A (en) * | 2018-05-22 | 2018-10-16 | 张文炳 | A kind of double-control valve for taking precautions against defective valve |
| CN113357389A (en) * | 2021-05-14 | 2021-09-07 | 西北工业大学 | Self-opening ventilation valve based on inertial unlocking principle and use method thereof |
| CN117047743A (en) * | 2023-10-12 | 2023-11-14 | 山西白求恩医院(山西医学科学院、华中科技大学同济医学院附属同济医院山西医院、山西医科大学第三医院、山西医科大学第三临床医学院) | Fixed mechanical arm that pulls in |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108662165A (en) * | 2018-05-22 | 2018-10-16 | 张文炳 | A kind of double-control valve for taking precautions against defective valve |
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| CN113357389A (en) * | 2021-05-14 | 2021-09-07 | 西北工业大学 | Self-opening ventilation valve based on inertial unlocking principle and use method thereof |
| CN117047743A (en) * | 2023-10-12 | 2023-11-14 | 山西白求恩医院(山西医学科学院、华中科技大学同济医学院附属同济医院山西医院、山西医科大学第三医院、山西医科大学第三临床医学院) | Fixed mechanical arm that pulls in |
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| CN104791543B (en) | 2017-03-15 |
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