CN205534292U - Step -down mechanism - Google Patents
Step -down mechanism Download PDFInfo
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- CN205534292U CN205534292U CN201620264199.3U CN201620264199U CN205534292U CN 205534292 U CN205534292 U CN 205534292U CN 201620264199 U CN201620264199 U CN 201620264199U CN 205534292 U CN205534292 U CN 205534292U
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Abstract
The utility model discloses a step -down mechanism, including the valve body, be provided with inlet channel, air outlet channel, escape orifice and feedback path on the valve body, be provided with step -down portion between inlet channel and the air outlet channel, be provided with pressure regulating portion between escape orifice and the feedback path, be connected with pressure adjusting screw on the valve body, be provided with the pressure regulating seat among the feedback path, step -down portion includes step -down case and step -down disk seat, and the step -down disk seat is provided with the cylindric structure of external screw thread for the outside, and steps down disk seat threaded connection in inlet channel, and the step -down case lies in air outlet channel, still is provided with the diaphragm on the step -down case, and the lateral wall of diaphragm is blocked air outlet channel and is formed on air outlet channel and feed back the chamber, the last leaking stoppage portion that is connected with of inlet channel, leaking stoppage portion includes intake pipe, baffle, steel ball, is provided with ball grooves on the baffle. The utility model discloses a pressure -relief controllability is good, operation expense low, troubleshooting makes things convenient for, can avoid the utility model discloses the natural gas spills over, can realize to overflow from cuting in the course of the work.
Description
Technical field
This utility model relates to compressed gas decompressor field, particularly relates to a kind of pressure reducing mechanism.
Background technology
Along with natural gas uses more and more extensive, various forms of air relief valve emerge in an endless stream, and optimizing further of natural gas depressurization valve arrangement will be promoted the utilization of natural gas further.As a example by environmental consciousness, natural gas can be greatly reduced Vehicular exhaust pollution for the fuel of vehicle motor, but in order to improve the single aeration stroke of the vehicle with natural gas as fuel, gas cylinder it is provided with for housing natural gas on vehicle, and the gas pressure being finally introducing cylinder is generally several kPas, so, the air relief valve reducing pressure high-pressure natural gas is particularly important, simultaneously in practice, the stability of above air relief valve performance has been reacted on the power of vehicle even in traffic safety the most intuitively.
Gas combustion automobile is in the process of moving, in its gas cylinder, gas pressure can be gradually lowered, so, for obtaining stable low pressure natural gas output or different engine power output, between blood pressure lowering spool and the valve seat of air relief valve will necessarily frequently relative motion with adjust output gas pressure, and gas passage air-flow between above blood pressure lowering spool and valve seat is very fast, either the washing away or friction between blood pressure lowering spool and valve seat of impurity in gas circuit, all can cause air relief valve degradation, even impurity effect blood pressure lowering spool and valve seat Guan Bi, so, gas pressure in the state lower cylinder that vehicle disables for a long time will slowly raise, cause igniting or other engine failure, optimizing further of gas pressure reducer valve core structure is particularly important.
Utility model content
Existing gas pressure reducer valve core structure being optimized problem further that be particularly important for above-mentioned, this utility model provides a kind of pressure reducing mechanism.
nullFor solving the problems referred to above，A kind of pressure reducing mechanism that this utility model provides solves problem by techniques below main points: a kind of pressure reducing mechanism，Including valve body，It is provided with inlet channel on described valve body、Outlet passageway、Escape orifice and feedback channel，It is provided with decompression portion between described inlet channel and outlet passageway，Pressure-regulating portion it is provided with between escape orifice and feedback channel，The arrival end of feedback channel and the port of export communicate with inlet channel and outlet passageway respectively，The most threaded on described valve body have pressure regulating screw，One end of described pressure regulating screw is stretched in feedback channel，And the end of pressure regulating screw one end of stretching into feedback channel is taper，Feedback channel is additionally provided with and the pressure regulating seat of feedback channel matched in clearance，Described pressure regulating seat is hollow、End is provided with the adjusting pressuring valve core of taper、Sidewall is provided with the column structure of air inlet and gas outlet，Pressure regulating screw stretch into feedback channel one rectify exchange pressure valve core，The port of export of described escape orifice communicates with outlet passageway，The arrival end of escape orifice is communicated with feedback channel by the gap between the tapered end of pressure regulating screw with pressure regulating seat spool；
Described decompression portion includes blood pressure lowering spool and blood pressure lowering valve seat, described blood pressure lowering valve seat is that outside is provided with externally threaded cylindrical-shaped structure, and blood pressure lowering valve seat is threaded in inlet channel, blood pressure lowering spool is positioned at outlet passageway, and it is respectively arranged with the tapered groove in cross section and projection on blood pressure lowering valve seat and blood pressure lowering spool, described projection is just to described groove, blood pressure lowering spool is additionally provided with diaphragm away from one end of blood pressure lowering valve seat, the sidewall of diaphragm blocks outlet passageway, diaphragm makes to be formed feedback cavity on outlet passageway, and the port of export of described feedback channel communicates with feedback cavity；
Connect on described inlet channel and have leak stopping portion, described leak stopping portion includes the air inlet pipe being connected on valve body and communicating with inlet channel, the baffle plate being arranged on air inlet pipe inwall, is positioned at the steel ball of air inlet pipe, and described baffle plate is provided with the ball recess that diameter is equal with steel ball size.
Concrete, the pressure regulating screw of setting, pressure regulating seat are pressure-regulating portion, and source of the gas is introduced by inlet channel, and the gap between the groove and the projection that are respectively provided with on blood pressure lowering spool and blood pressure lowering valve seat enters into and completes blood pressure lowering in outlet passageway；nullIn the feedback channel arranged，The entrance of feedback channel communicates with inlet channel，Gases at high pressure are just introduced in pressure regulating seat，In the port of export of feedback channel and escape orifice，Preferably the port of export of feedback channel is arranged on the front end of gas channel between pressure regulating seat and pressure regulating screw，The i.e. arrival end of feedback channel is connected with gas outlet by the air inlet on pressure regulating seat respectively with the port of export，Escape orifice is arranged on the rear end of described gas channel，I.e. after adjusting pressuring valve core，Sheathed O between the air inlet and gas outlet of pressure regulating seat，Escape orifice is arranged on the rear end of described gas channel，So，Gap between pressure regulating seat and pressure regulating screw adjusts and is passed into the size of air-flow in escape orifice，So，The pressure of feedback channel rear end force blood pressure lowering spool away from or towards blood pressure lowering valve seat move，I.e. diaphragm compression chord is deformed or/and slide along outlet passageway，Reach to adjust the purpose of air-flow size between blood pressure lowering spool and blood pressure lowering valve seat，So，It is easy to obtain gas pressure size after different decompressions；Inlet channel is cut off when flow is bigger by the ball recess on the steel ball arranged and baffle plate for this utility model: in concrete utilization, the valve rear end of air relief valve is generally gas equipment, the operating mode of gas equipment relatively air relief valve front end pipeline operating mode is complicated, vibrations such as himself, the pressure of rear end pipeline frequent fluctuation, gas equipment fault etc. is all likely to result in rear end pipeline or gas equipment fault, the front end of the ball recess that the steel ball arranged is positioned on baffle plate, lost efficacy at air relief valve back-end sealing, when decompression portion or equipment fault produce, if the flow of inlet channel increases suddenly, steel ball under the washing away of air-flow towards baffle plate lateral movement, last steel ball falls into blocking-up air inlet pipe in ball recess, realize fault from stopping function.
In this programme, owing to using the version that pressure regulating seat and feedback channel matched in clearance, blood pressure lowering valve seat be threaded with inlet channel, pressure regulating screw is connected with valve body screw thread, make this utility model can separate with valve body with the spool of decompression easily for pressure regulation, it is easy to the examination and maintenance of two above spool, can make that effect of easing stress of the present utility model is controlled, operation expense is low, failture evacuation is convenient；Meanwhile, be connected with outlet passageway for adjusting the escape orifice port of export of feedback cavity pressure size, it is to avoid this utility model natural gas in course of normal operation overflows from air relief valve, beneficially uses gas safety.
As preferred version of the present utility model, inlet channel arranges drainage screen, and described drainage screen is positioned at the front end of feedback channel arrival end, with the impurity in isolation gases at high pressure, reduce impurity to the impact of both the above spool and the quality of follow-up low pressure gas, outlet passageway arranges gs-oil separator, with the water separated out after removing decompression or oil.
Further technical scheme is:
For ease of reducing volume of the present utility model, processing the most of the present utility model, reduce the quantity of sealing surface on valve body, described outlet passageway, inlet channel, feedback channel and escape orifice are formed by least one section of straight hole section.Above structure is easy to valve body is set to an entirety, processing inlet channel, outlet passageway, feedback channel and escape orifice by the form of boring, the opening of above inlet channel, outlet passageway, feedback channel and escape orifice can be sealed by the version of pipe threaded screw fitted seal pad.
For promoting the feedback response speed of described blood pressure lowering spool, buffering blood pressure lowering spool and the collision of blood pressure lowering valve seat, being additionally provided with two ends in described outlet passageway and be respectively acting on the spring of feedback cavity wall and diaphragm, described spring, blood pressure lowering spool and blood pressure lowering valve seat are respectively positioned in same straight hole section.Arrangement above is easy to improve blood pressure lowering spool by the precision of feedback channel gas pressure, the installation being easy to blood pressure lowering spool and spring and replacing.
For preventing the non-artificial rotation of described pressure regulating screw, affect outlet pressure of the present utility model, described pressure regulating screw is additionally provided with two ends and is respectively acting on the elastic component of pressure regulating screw and valve body.
Owing to spring can deform in the larger context compared to other elastic components, for making pressure regulating screw elastic component during pressure regulation the most all have active force to pressure regulating screw, described elastic component is compression spring.
For promoting steel ball to the sensitivity of air-flow change perception in air inlet pipe, the whole air-flows i.e. making air inlet pipe all can wash away to steel ball in flow process, it is additionally provided with deflector on the inwall of described air inlet pipe, described deflector, steel ball and baffle plate are positioned at same section straight length, and steel ball is between deflector and baffle plate.
This utility model has the advantages that
1, this utility model simple in construction, owing to using the version that pressure regulating seat and feedback channel matched in clearance, blood pressure lowering valve seat be threaded with inlet channel, pressure regulating screw is connected with valve body screw thread, make this utility model can separate with valve body with the spool of decompression easily for pressure regulation, it is easy to the examination and maintenance of two above spool, can make that effect of easing stress controllability of the present utility model is good, operation expense is low, failture evacuation is convenient.
2, be connected with outlet passageway for adjusting the escape orifice port of export of feedback cavity pressure size, it is to avoid this utility model natural gas in course of normal operation overflows from air relief valve, beneficially uses gas safety.
3, inlet channel is cut off when flow is bigger by the ball recess on the steel ball arranged and baffle plate for this utility model: in concrete utilization, the valve rear end of air relief valve is generally gas equipment, the operating mode of gas equipment relatively air relief valve front end pipeline operating mode is complicated, vibrations such as himself, the pressure of rear end pipeline frequent fluctuation, gas equipment fault etc. is all likely to result in rear end pipeline or gas equipment fault, the front end of the ball recess that the steel ball arranged is positioned on baffle plate, lost efficacy at air relief valve back-end sealing, when decompression portion or equipment fault produce, if the flow of inlet channel increases suddenly, steel ball under the washing away of air-flow towards baffle plate lateral movement, last steel ball falls into blocking-up air inlet pipe in ball recess, realize this utility model and also there is fault from stopping function.
Accompanying drawing explanation
Fig. 1 is the structural representation of one specific embodiment of a kind of pressure reducing mechanism described in the utility model.
Figure acceptance of the bid note is respectively as follows: 1, escape orifice, and 2, adjusting pressuring valve core, 3, sealing gasket, 4, pressure regulating seat, 5, feedback channel, 6, valve body, 7, blood pressure lowering spool, 71, diaphragm, 72, spring, 73, feedback cavity, 8, blood pressure lowering valve seat, 9, inlet channel, 10, outlet passageway, 11, pressure regulating screw, 12, elastic component, 13, air inlet pipe, 14, baffle plate, 15, steel ball, 16, deflector.
Detailed description of the invention
Below in conjunction with embodiment, the utility model is described in further detail, but structure of the present utility model is not limited only to following example:
Embodiment 1:
nullAs shown in Figure 1，A kind of pressure reducing mechanism，Including valve body 6，It is provided with inlet channel 9 on described valve body 6、Outlet passageway 10、Escape orifice 1 and feedback channel 5，It is provided with decompression portion between described inlet channel 9 and outlet passageway 10，It is provided with pressure-regulating portion between escape orifice 1 and feedback channel 5，The arrival end of feedback channel 5 and the port of export communicate with inlet channel 9 and outlet passageway 10 respectively，The most threaded on described valve body 6 have pressure regulating screw 11，One end of described pressure regulating screw 11 is stretched in feedback channel 5，And the end of pressure regulating screw 11 one end of stretching into feedback channel 5 is taper，Feedback channel 5 is additionally provided with and the pressure regulating seat 4 of feedback channel 5 matched in clearance，Described pressure regulating seat 4 is hollow、End is provided with the adjusting pressuring valve core 2 of taper、Sidewall is provided with the column structure of air inlet and gas outlet，Pressure regulating screw 11 stretch into feedback channel 5 one rectify exchange pressure valve core 2，The port of export of described escape orifice 1 communicates with outlet passageway 10，The arrival end of escape orifice 1 is communicated with feedback channel 5 by the gap between tapered end and pressure regulating seat 4 spool of pressure regulating screw 11；
Described decompression portion includes blood pressure lowering spool 7 and blood pressure lowering valve seat 8, described blood pressure lowering valve seat 8 is provided with externally threaded cylindrical-shaped structure for outside, and blood pressure lowering valve seat 8 is threaded in inlet channel 9, blood pressure lowering spool 7 is positioned at outlet passageway 10, and it is respectively arranged with the tapered groove in cross section and projection on blood pressure lowering valve seat 8 and blood pressure lowering spool 7, described projection is just to described groove, blood pressure lowering spool 7 is additionally provided with diaphragm 71 away from one end of blood pressure lowering valve seat 8, the sidewall of diaphragm 71 blocks outlet passageway 10, diaphragm 71 makes to be formed feedback cavity 73 on outlet passageway 10, the port of export of described feedback channel 5 communicates with feedback cavity 73；
Connect on described inlet channel 9 and have leak stopping portion, described leak stopping portion includes the air inlet pipe 13 being connected on valve body 6 and communicating with inlet channel 9, the baffle plate 14 being arranged on air inlet pipe 13 inwall, is positioned at the steel ball 15 of air inlet pipe 13, and described baffle plate 14 is provided with the ball recess of diameter and steel ball 15 equal diameters.
Concrete, the pressure regulating screw 11 of setting, pressure regulating seat 4 are pressure-regulating portion, and source of the gas is introduced by inlet channel 9, and the gap between the groove and the projection that are respectively provided with on blood pressure lowering spool 7 and blood pressure lowering valve seat 8 enters in outlet passageway 10 and completes blood pressure lowering；nullIn the feedback channel 5 arranged，The entrance of feedback channel 5 communicates with inlet channel 9，Gases at high pressure are just introduced in pressure regulating seat 4，In the port of export of feedback channel 5 and escape orifice 1，Preferably the port of export of feedback channel 5 is arranged on the front end of gas channel between pressure regulating seat 4 and pressure regulating screw 11，The i.e. arrival end of feedback channel 5 is connected with gas outlet by the air inlet on pressure regulating seat 4 respectively with the port of export，Escape orifice 1 is arranged on the rear end of described gas channel，I.e. after adjusting pressuring valve core 2，Sheathed O between the air inlet and gas outlet of pressure regulating seat 4，Escape orifice 1 is arranged on the rear end of described gas channel，So，Gap between pressure regulating seat 4 and pressure regulating screw 11 adjusts and is passed into the size of air-flow in escape orifice 1，So，The pressure of feedback channel 5 rear end force blood pressure lowering spool 7 away from or move towards blood pressure lowering valve seat 8，I.e. diaphragm 71 compression chord is deformed or/and slide along outlet passageway 10，Reach to adjust the purpose of air-flow size between blood pressure lowering spool 7 and blood pressure lowering valve seat 8，So，It is easy to obtain gas pressure size after different decompressions；Inlet channel 9 is cut off when flow is bigger by the ball recess on the steel ball 15 arranged and baffle plate 14 for this utility model: in concrete utilization, the valve rear end of air relief valve is generally gas equipment, the operating mode of gas equipment relatively air relief valve front end pipeline operating mode is complicated, vibrations such as himself, the pressure of rear end pipeline frequent fluctuation, gas equipment fault etc. is all likely to result in rear end pipeline or gas equipment fault, the steel ball 15 arranged is positioned at the front end of the ball recess on baffle plate 14, lost efficacy at air relief valve back-end sealing, when decompression portion or equipment fault produce, if the flow of inlet channel 9 increases suddenly, steel ball under the washing away of air-flow towards baffle plate lateral movement, last steel ball 15 falls into blocking-up air inlet pipe 13 in ball recess, realize fault from stopping function.
In this programme, due to the version using pressure regulating seat 4 and feedback channel 5 matched in clearance, blood pressure lowering valve seat 8 is threadeded with inlet channel 9, pressure regulating screw 11 is threadeded with valve body 6, the spool for pressure regulation and decompression is made in this utility model to separate with valve body 6 easily, it is easy to the examination and maintenance of two above spool, can make that effect of easing stress of the present utility model is controlled, operation expense is low, failture evacuation is convenient；Meanwhile, be connected with outlet passageway 10 for adjusting escape orifice 1 port of export of pressure size in feedback cavity 73, it is to avoid this utility model natural gas in course of normal operation overflows from air relief valve, beneficially uses gas safety.
As preferred version of the present utility model, inlet channel 9 arranges drainage screen, and described drainage screen is positioned at the front end of feedback channel 5 arrival end, with the impurity in isolation gases at high pressure, reduce impurity to the impact of both the above spool and the quality of follow-up low pressure gas, outlet passageway 10 arranges gs-oil separator, with the water separated out after removing decompression or oil.
Embodiment 2:
The present embodiment is further qualified on the basis of embodiment 1, as shown in Figure 1, for ease of reducing volume of the present utility model, it is beneficial to processing of the present utility model, reducing the quantity of sealing surface on valve body 6, described outlet passageway 10, inlet channel 9, feedback channel 5 and escape orifice 1 are formed by least one section of straight hole section.Above structure is easy to be set to valve body 6 entirety, processing inlet channel 9, outlet passageway 10, feedback channel 5 and escape orifice 1 by the form of boring, the opening of above inlet channel 9, outlet passageway 10, feedback channel 5 and escape orifice 1 can be sealed by the version of pipe threaded screw fitted seal pad 3.
For promoting the feedback response speed of described blood pressure lowering spool 7, buffering blood pressure lowering spool 7 and the collision of blood pressure lowering valve seat 8, being additionally provided with two ends in described outlet passageway 10 and be respectively acting on the spring 72 of feedback cavity 73 wall and diaphragm 71, described spring 72, blood pressure lowering spool 7 and blood pressure lowering valve seat 8 are respectively positioned in same straight hole section.Arrangement above is easy to improve blood pressure lowering spool 7 by the precision of feedback channel 5 gas pressure, the installation being easy to blood pressure lowering spool 7 and spring 72 and replacing.
Embodiment 3:
The present embodiment is further qualified on the basis of embodiment 1, as shown in Figure 1, for preventing the described non-artificial rotation of pressure regulating screw 11, affect outlet pressure of the present utility model, described pressure regulating screw 11 is additionally provided with two ends and is respectively acting on the elastic component 12 of pressure regulating screw 11 and valve body 6.
Owing to spring can deform in the larger context compared to other elastic components 12, for making pressure regulating screw 11 elastic component 12 during pressure regulation the most all have active force to pressure regulating screw 11, described elastic component 12 is compression spring.
Embodiment 4:
The present embodiment is further qualified on the basis of above example, as shown in Figure 1, for promoting steel ball 15 to the sensitivity of air-flow change perception in air inlet pipe 13, the whole air-flows i.e. making air inlet pipe 13 all can wash away to steel ball 15 in flow process, it is additionally provided with deflector 16 on the inwall of described air inlet pipe 13, described deflector 16, steel ball 15 and baffle plate 14 are positioned at same section straight length, and steel ball 15 is between deflector 16 and baffle plate 14.
Above content is to combine the further description that this utility model is made by concrete preferred implementation, it is impossible to assert that detailed description of the invention of the present utility model is confined to these explanations.For this utility model person of an ordinary skill in the technical field, other embodiments drawn under without departing from the technical solution of the utility model, should be included in protection domain of the present utility model.
Claims (6)
- null1. a pressure reducing mechanism，Including valve body (6)，Inlet channel (9) it is provided with on described valve body (6)、Outlet passageway (10)、Escape orifice (1) and feedback channel (5)，It is provided with decompression portion between described inlet channel (9) and outlet passageway (10)，It is provided with pressure-regulating portion between escape orifice (1) and feedback channel (5)，The arrival end of feedback channel (5) and the port of export communicate with inlet channel (9) and outlet passageway (10) respectively，It is characterized in that，Described valve body (6) is the most threaded pressure regulating screw (11)，One end of described pressure regulating screw (11) is stretched in feedback channel (5)，And the end of pressure regulating screw (11) one end of stretching into feedback channel (5) is taper，Feedback channel (11) is additionally provided with the pressure regulating seat (4) with feedback channel (11) matched in clearance，Described pressure regulating seat (4) is hollow、End is provided with the adjusting pressuring valve core (2) of taper、Sidewall is provided with the column structure of air inlet and gas outlet，Pressure regulating screw (11) stretch into feedback channel (5) one rectify exchange pressure valve core (2)，The port of export of described escape orifice (1) communicates with outlet passageway (10)，The arrival end of escape orifice (1) is communicated with feedback channel (5) by the gap between tapered end and the pressure regulating seat spool (2) of pressure regulating screw (11)；Described decompression portion includes blood pressure lowering spool (7) and blood pressure lowering valve seat (8), described blood pressure lowering valve seat (8) is that outside is provided with externally threaded cylindrical-shaped structure, and blood pressure lowering valve seat (8) is threaded in inlet channel (9), blood pressure lowering spool (7) is positioned at outlet passageway (10), and it is respectively arranged with the tapered groove in cross section and projection on blood pressure lowering valve seat (8) and blood pressure lowering spool (7), described projection is just to described groove, blood pressure lowering spool (7) is additionally provided with diaphragm (71) away from one end of blood pressure lowering valve seat (8), the sidewall of diaphragm (71) blocks outlet passageway (10), diaphragm (71) makes to be formed feedback cavity (73) on outlet passageway (10), the port of export of described feedback channel (5) communicates with feedback cavity (73)；The upper connection of described inlet channel (9) has leak stopping portion, described leak stopping portion include being connected to valve body (6) upper and communicate with inlet channel (9) air inlet pipe (13), the baffle plate (14) being arranged on air inlet pipe (13) inwall, the steel ball (15) that is positioned at air inlet pipe (13), described baffle plate (14) is provided with the ball recess of diameter and steel ball (15) equal diameters.
- A kind of pressure reducing mechanism the most according to claim 1, it is characterised in that described outlet passageway (10), inlet channel (9), feedback channel (5) and escape orifice (1) are formed by least one section of straight hole section.
- A kind of pressure reducing mechanism the most according to claim 2, it is characterized in that, being additionally provided with two ends in described outlet passageway (10) and be respectively acting on the spring (72) of feedback cavity (73) wall and diaphragm (71), described spring (72), blood pressure lowering spool (7) and blood pressure lowering valve seat (8) are respectively positioned in same straight hole section.
- A kind of pressure reducing mechanism the most according to claim 1, it is characterised in that be additionally provided with two ends on described pressure regulating screw (11) and be respectively acting on the elastic component (12) of pressure regulating screw (11) and valve body (6).
- A kind of pressure reducing mechanism the most according to claim 4, it is characterised in that described elastic component (12) is compression spring.
- 6. according to a kind of pressure reducing mechanism any one of in claim 1 to 5, it is characterized in that, deflector (16) it is additionally provided with on the inwall of described air inlet pipe (13), described deflector (16), steel ball (15) and baffle plate (14) are positioned at same section straight length, and steel ball (15) is positioned between deflector (16) and baffle plate (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620264199.3U CN205534292U (en) | 2016-04-01 | 2016-04-01 | Step -down mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620264199.3U CN205534292U (en) | 2016-04-01 | 2016-04-01 | Step -down mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN205534292U true CN205534292U (en) | 2016-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620264199.3U Expired - Fee Related CN205534292U (en) | 2016-04-01 | 2016-04-01 | Step -down mechanism |
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| CN (1) | CN205534292U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107228215A (en) * | 2017-07-28 | 2017-10-03 | 北京航天发射技术研究所 | A kind of soft-sealing safety valve |
| CN105864441B (en) * | 2016-04-01 | 2018-12-04 | 成都科盛石油科技有限公司 | A kind of dropping equipment |
-
2016
- 2016-04-01 CN CN201620264199.3U patent/CN205534292U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105864441B (en) * | 2016-04-01 | 2018-12-04 | 成都科盛石油科技有限公司 | A kind of dropping equipment |
| CN107228215A (en) * | 2017-07-28 | 2017-10-03 | 北京航天发射技术研究所 | A kind of soft-sealing safety valve |
| CN107228215B (en) * | 2017-07-28 | 2019-08-20 | 北京航天发射技术研究所 | A kind of soft-sealing safety valve |
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