CN108019538B - Pneumatic control system of tank pump isolation emergency cut-off valve - Google Patents
Pneumatic control system of tank pump isolation emergency cut-off valve Download PDFInfo
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- CN108019538B CN108019538B CN201810010710.0A CN201810010710A CN108019538B CN 108019538 B CN108019538 B CN 108019538B CN 201810010710 A CN201810010710 A CN 201810010710A CN 108019538 B CN108019538 B CN 108019538B
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- 238000002955 isolation Methods 0.000 title claims abstract description 14
- 238000001914 filtration Methods 0.000 claims description 29
- 238000003860 storage Methods 0.000 claims description 15
- 238000005520 cutting process Methods 0.000 claims description 2
- 230000006872 improvement Effects 0.000 description 8
- 230000007246 mechanism Effects 0.000 description 5
- 230000003584 silencer Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
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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
Abstract
The utility model provides a pneumatic control system of a tank pump isolation emergency cut-off valve, which comprises a pneumatic double-acting control valve, an automatic control assembly, an accident air tank assembly and a fire automatic cut-off assembly, wherein the pneumatic double-acting control valve is arranged on the tank pump isolation emergency cut-off valve; through setting up the accident air jar, under the condition that the air supply breaks down, the air in the accident air jar still can control the valve and carry out three reciprocal strokes to when the atmospheric pressure in the accident air jar became low, and when taking place the condition of a fire, easy acceptation is heated and is melted, utilizes the air control valve in the accident air jar to close fast, has solved current valve gas accuse system and has failed the back in the air supply, just can't pass through control system self-closing valve and open valve again, and the conflagration circumstances is reoccurrence under, can't quick response, the technical problem of closing the valve.
Description
Technical Field
The utility model relates to the technical field of automatic control systems of pneumatic control valves, in particular to a pneumatic control system of a tank pump isolation emergency cut-off valve.
Background
In the prior art, the field control of the pneumatic control valve is mostly realized by adding a hand wheel device on a pneumatic actuating mechanism part; the hand wheel device generally adopts gear transmission, so that the speed of opening and closing the valve is slower; before the hand wheel device is operated, the automatic control part is required to be confirmed to be completely switched to a manual operation state, the process is complex, and damage is often caused by improper operation of field operators; moreover, because the pneumatic single-acting actuating mechanism is internally provided with a spring, the force of the spring needs to be overcome during manual operation, so that on-site operators can open and close the valve with larger force.
Along with the demands of petrochemical production, the automation degree and the safety requirement of valves on devices are higher and higher, and on one hand, the valves are required to be operated on site and controlled remotely and automatically; on the other hand, when the main air source fails, the valve can be operated again through the backup air source accident air storage tank, so that the production is ensured and the loss is reduced; moreover, along with the sequential release of documents such as Chinese petrochemical industry An [ 2010 ] 635 and Chinese petrochemical industry building No. [ 2011 ] 518, for the safety of tank areas, isolation measures are taken at the root of a storage tank, and when a fire disaster occurs, an automatic quick cut-off valve is adopted to cut off the intercommunication between the tanks, so that the fire disaster area is reduced, and the economic loss and the accident expansion of the storage tank under the condition of the fire disaster are reduced.
Chinese patent CN201320209234.8 discloses a manual control system for a pneumatic single-acting control valve, which comprises a pneumatic single-acting control valve and a manual control system, wherein the pneumatic single-acting control valve comprises a valve body and a pneumatic single-acting actuator connected to the valve body, the manual control system comprises a pneumatic control valve, an electromagnetic valve, a manual switching valve, a manual control valve, an air filtering and depressurizing assembly and an air source, the air filtering and depressurizing assembly, the electromagnetic valve, the pneumatic control valve and the pneumatic single-acting actuator are sequentially connected in series, the manual switching valve is connected in parallel between signal ports of the air filtering and depressurizing assembly and the pneumatic control valve, and the manual control valve is connected in parallel between the air filtering and depressurizing assembly and the pneumatic single-acting actuator, and the remote control can be realized by installing the manual control system on the pneumatic single-acting control valve, and the on-site manual control can also be realized by the control valve; the utility model has the advantages of simple control, convenient operation, high reliability and low cost.
The above mechanism has a plurality of defects, such as the control system can perform on-site manual control, but the existing valve pneumatic control system cannot automatically close and open the valve through the control system after the air source fails, and the valve cannot be quickly reacted and closed under the condition of fire recurrence.
Disclosure of Invention
The utility model provides a pneumatic control system for a tank pump isolation emergency cut-off valve, aiming at the defects of the prior art, by arranging an accident air tank, air in the accident air tank can still control the valve to perform three reciprocating strokes under the condition that an air source fails, the valve is automatically closed when the air pressure in the accident air tank becomes low, and the air in the accident air tank is easily contained and fused when a fire occurs, so that the valve is controlled to be quickly closed by utilizing the air in the accident air tank, and the technical problems that the valve cannot be automatically closed and opened by the control system after the air source fails and the valve cannot be quickly reacted and closed under the condition that a fire occurs again in the existing valve pneumatic control system are solved.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
a pneumatic control system for a tank pump isolation emergency shut-off valve, comprising:
the pneumatic double-acting control valve comprises a valve body and a pneumatic double-acting executing mechanism connected with the valve body, wherein the pneumatic double-acting executing mechanism comprises a first executing station and a second executing station;
the automatic control assembly is respectively connected with the first execution station and the second execution station, and the air circuit controls the opening and closing of the pneumatic double-acting control valve by changing the inlet and outlet of the first execution station and the second execution station during working; and
the emergency assembly comprises a gas storage unit connected in series on the automatic control assembly and a cutting-off unit connected in parallel on the automatic control assembly, and the emergency assembly works to control the pneumatic double-acting control valve when the gas circuit fails.
The automatic control assembly comprises an air source, a one-way valve, an air filtering pressure reducing valve, a first air control valve, a second air control valve, a third air control valve, an electromagnetic valve and a pressure switch, wherein the air source, the one-way valve, the air filtering pressure reducing valve and the first air control valve are sequentially connected in series, the second air control valve, the first air control valve and the first execution station are sequentially connected in series, the third air control valve, the first air control valve and the second execution station are sequentially connected in series, the electromagnetic valve is connected in parallel between the air filtering pressure reducing valve and a signal port of the first air control valve, one end of the electromagnetic valve, which is connected with the air filtering pressure reducing valve, is connected with the second air control valve, the pressure switch is respectively connected with a signal port of the second air control valve and a signal port of the third air control valve, the first air control valve is a three-position five-way air control valve, an air inlet of the first air control valve is connected with an air outlet of the air filtering pressure reducing valve, a first air outlet of the first air control valve is connected with a second air outlet of the first air control valve, and an air inlet of the first air control valve is connected with an air inlet of the third air control valve.
As an improvement, the gas storage unit comprises a gas storage tank and a manual valve, one end of the manual valve is connected in series with the automatic control component, and the other end of the manual valve is connected in series with the gas storage tank.
As an improvement, the cutting unit comprises a fusible plug which is connected in series between the air filtering pressure reducing valve and the first air control valve and is positioned in front of the connection points of the electromagnetic valve, the air filtering pressure reducing valve and the first air control valve, the fusible plug is connected with the pressure switch signal port end, the second air control valve is a two-position three-way normally-closed air control valve, and the air outlet of the second air control valve is connected with the first execution station.
As an improvement, the third pneumatic control valve is a two-position three-way normally closed pneumatic control valve, and an air outlet of the third pneumatic control valve is connected with the second execution station.
As an improvement, the electromagnetic valve is a two-position five-way direct-acting single-electric-control electromagnetic valve, and an air inlet of the electromagnetic valve is connected with an air outlet of the air filtering pressure reducing valve.
As an improvement, a balance valve is connected in parallel between the second pneumatic control valve and the third pneumatic control valve.
As an improvement, the exhaust port of the third pneumatic control valve is communicated with the atmosphere, and a silencer is arranged on the exhaust port of the third pneumatic control valve.
As an improvement, the exhaust port of the electromagnetic valve is communicated with the atmosphere, and a silencer is arranged on the exhaust port of the electromagnetic valve.
As an improvement, the exhaust port of the first pneumatic control valve is communicated with the atmosphere, and a silencer is arranged on the exhaust port of the first pneumatic control valve.
The utility model has the beneficial effects that:
(1) Compared with the traditional pneumatic double-acting automatic control system, the automatic control system has the advantages that by arranging the accident air tank assembly, when an air source fails, the accident air tank supplies air, the two-position five-way electric control valve controls the three-position five-way air control valve to realize the opening and closing of the two-position three-way air control valve, the control valve closes three reciprocating strokes, and when the air pressure in the accident air tank is weakened, the two-position five-way electric control valve controls the three-position five-way air control valve to realize the opening of the two-position three-way air control valve, and the valve is closed;
(2) Compared with the traditional pneumatic double-acting automatic control system, the automatic control system has the advantages that the accident air tank assembly is arranged, when a fire disaster occurs, the accident air tank supplies air, the fusible plug is fused, the adjustable pressure switch is reset, the two-position three-way pneumatic control valve is controlled to be opened, and the valve is rapidly closed;
(3) Compared with the traditional pneumatic double-acting automatic control system, the pneumatic double-acting automatic control system has the advantages that the pneumatic double-acting automatic control valve is selected as the control valve, the opening and closing of the control valve can be realized by pneumatic control, meanwhile, the balance valve is connected in parallel between the second pneumatic control valve and the third pneumatic control valve, the purpose of adjusting the flow is achieved through the flow resistance of the valve, the action object is the resistance of the system, the phenomenon of unbalanced resistance in the system is eliminated, and therefore, the new gas quantity can be distributed in a balanced manner according to the proportion calculated by design, and each branch is increased and decreased proportionally.
In a word, the utility model has the advantages of simple structure, timely control, high safety and the like, and is particularly suitable for the technical field of automatic control systems of pneumatic control valves.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, it being obvious that the drawings described below are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of the overall structure of the present utility model.
FIG. 2 is a schematic diagram of the present utility model in a normal operating state;
FIG. 3 is a schematic view of a second working state of the present utility model under normal conditions;
FIG. 4 is a schematic view of the operation state of the present utility model in the case of failure;
FIG. 5 is a schematic view of a second operating condition in the event of a failure in accordance with the present utility model;
FIG. 6 is a schematic view of the operation state of the present utility model in case of fire.
Detailed Description
The technical solutions in the embodiments of the present utility model are clearly and completely described below with reference to the accompanying drawings.
Example 1
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.
As shown in fig. 1, a pneumatic control system for a tank pump isolation emergency shut-off valve, comprising:
a pneumatically-actuated double-acting control valve 1, said pneumatically-actuated double-acting control valve 1 comprising a valve body 11 and a pneumatically-actuated double-acting actuator 12 connected to said valve body 11, said pneumatically-actuated double-acting actuator 12 comprising a first actuating position 121 and a second actuating position 122;
the automatic control assembly 2 is respectively connected with the first execution station 121 and the second execution station 122, and the air path is changed to control the opening and closing of the pneumatic double-acting control valve 1 by changing the inlet and outlet of the first execution station 121 and the second execution station 122 during operation; and
the emergency assembly 3 comprises an air storage unit 31 connected in series with the automatic control assembly 2 and a cutting-off unit 32 connected in parallel with the automatic control assembly 2, and the emergency assembly 3 works to control the pneumatic double-acting control valve 1 when the air circuit fails.
It should be noted that, as shown in fig. 2 and 3, when in a normal condition, the air source 21 supplies air to the whole control system, the external electric signal controls the power on and power off of the two-position three-way direct-acting single-electric control electromagnetic valve, when the two-position five-way direct-acting single-electric control electromagnetic valve loses power, the two-position five-way direct-acting single-electric control electromagnetic valve is in a normally closed state, at the moment, the signal port of the two-position five-way normal-way air control valve does not receive a signal, at the moment, the internal air inlet and the air outlet of the two-position five-way normal-way air control valve are disconnected; when electricity is obtained above the two-position five-way direct-acting single-electric control electromagnetic valve, air enters the first executive station 121 from the second air control valve 25 to close the valve body 11, and then is discharged from the second air outlet b of the first air control valve 24; when electricity is obtained below the two-position five-way direct-acting single-electric control electromagnetic valve, air enters the second execution station 122 from the third air control valve 26 to open the valve body 11, and then is discharged outwards from the second exhaust port a of the first air control valve 24; under normal conditions, the adjustable pressure switch 42 is in a normally-on state, in this embodiment, the set value of the adjustable pressure switch 42 is set to 0.35MPa, and when the air pressure is less than 0.35MPa, air passes through the adjustable pressure switch 42 and enters the signal ports of the second air control valve 25 and the third air control valve 26 respectively to be in the normally-on state.
It should be further noted that, as shown in fig. 4 and 5, when the manual valve 32 is manually opened in the event of a failure, the accident air tank assembly 3 supplies air to the entire control system, and in this embodiment, the valves are operated in normal operation.
It should be further noted that, as shown in fig. 6, when the accident air tank assembly 3 supplies air and the fusible plug 41 melts in a fire situation, the adjustable pressure switch 42 is reset, at this time, the adjustable pressure switch 42 is in a normally closed state, the air path cannot enter the signal port ends of the second air control valve 25 and the third air control valve 26 through the adjustable pressure switch 42, the second air control valve 25 and the third air control valve 26 are in a normally closed state due to self-spring reset, at this time, the air path of the whole system directly enters the second air control valve 25 through the air filtering and reducing valve 23, then enters the first execution station 121 to quickly close the valve, and the air is discharged outwards through the air outlet c of the third air control valve 26.
Further, as shown in fig. 1, the automatic control assembly 2 includes an air source 21, a one-way valve 22, an air filtering and reducing valve 23, a first air control valve 24, a second air control valve 25, a third air control valve 26, a solenoid valve 27 and a pressure switch 29, where the air source 21, the one-way valve 22, the air filtering and reducing valve 23 and the first air control valve 24 are sequentially connected in series, the second air control valve 25, the first air control valve 24 and the first executing station 121 are sequentially connected in series, the third air control valve 26, the first air control valve 24 and the second executing station 122 are sequentially connected in series, the solenoid valve 27 is connected in parallel between the signal ports of the air filtering and reducing valve 23 and the first air control valve 24, one end of the solenoid valve 27 connected with the air filtering and reducing valve 23 is connected with the second air control valve 25, the pressure switch 29 is respectively connected with the signal ports of the second air control valve 25 and the third air control valve 26, the first air control valve 24 is a three-position five-way air control valve, the first air control valve 24 is connected with the first air inlet of the first air filtering and reducing valve 24 is connected with the first air outlet of the first air filtering and reducing valve 24, and the second air outlet of the first air filtering and reducing valve 24 is connected with the first air inlet of the first air valve 24.
Further, as shown in fig. 1, the air storage unit 31 includes an air storage tank 311 and a manual valve 312, one end of the manual valve 312 is connected in series to the automatic control assembly 2, and the other end of the manual valve 312 is connected in series to the air storage tank 311.
Further, as shown in fig. 1, the shut-off unit 32 includes a fusible plug 321, the fusible plug 321 is connected in series between the air filtering and pressure reducing valve 23 and the first pneumatic control valve 24, and the connection point is located before the connection point of the electromagnetic valve 27 and the air filtering and pressure reducing valve 23 and the first pneumatic control valve 24, the fusible plug 321 is connected with the signal port end of the pressure switch 29, and the second pneumatic control valve 25 is a two-position three-way normally-closed pneumatic control valve, and the air outlet of the second pneumatic control valve 25 is connected with the first execution station 121.
Further, as shown in fig. 1, the third pneumatic control valve 26 is a two-position three-way normally closed pneumatic control valve, and an air outlet of the third pneumatic control valve 26 is connected to the second execution station 122.
Further, as shown in fig. 1, the electromagnetic valve 27 is a two-position three-way direct-acting single-electric-control electromagnetic valve, and an air inlet of the electromagnetic valve 27 is connected with an air outlet of the air filtering pressure reducing valve 23.
Example two
As shown in fig. 1, in which the same or corresponding parts as those of the first embodiment are denoted by the corresponding reference numerals as those of the first embodiment, only the points of distinction from the first embodiment will be described below for the sake of brevity. The second embodiment is different from the first embodiment in that: a balance valve 28 is connected in parallel between the second pneumatic control valve 25 and the third pneumatic control valve 26.
The control valve is a pneumatic double-acting control valve, the control valve can be opened and closed by pneumatic control, meanwhile, a balance valve 28 is connected in parallel between the second pneumatic control valve 25 and the third pneumatic control valve 26, the purpose of adjusting flow is achieved through the flow resistance of the valve, the action object is the resistance of the system, the phenomenon of unbalanced resistance in the system is eliminated, and therefore new air quantity can be distributed in a balanced mode according to the proportion calculated by design, and each branch is increased and decreased proportionally.
Further, as shown in fig. 1, the exhaust port of the third pneumatic control valve 26 is open to the atmosphere, and a muffler is mounted on the exhaust port of the third pneumatic control valve 26.
Further, as shown in fig. 1, the exhaust port of the electromagnetic valve 27 is connected to the atmosphere, and a muffler is mounted on the exhaust port of the electromagnetic valve 27.
Further, as shown in fig. 1, the exhaust port of the first air control valve 24 is connected to the atmosphere, and a muffler is installed on the exhaust port of the first air control valve 24.
The arrow on the side of the air-operated double-acting control valve 1 in fig. 1 to 6 is directed in the opening direction of the air-operated double-acting control valve 1.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
The foregoing description of the disclosed embodiments will so enable those skilled in the art to make various modifications and equivalent changes to those described and illustrated without departing from the spirit and scope of the present utility model. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the utility model without departing from the essential scope thereof. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.
Claims (5)
1. A pneumatic control system for a canister pump isolation emergency shut-off valve, comprising:
a pneumatically-actuated double-acting control valve (1), the pneumatically-actuated double-acting control valve (1) comprising a valve body (11) and a pneumatically-actuated double-acting actuator (12) connected to the valve body (11), the pneumatically-actuated double-acting actuator (12) comprising a first actuating position (121) and a second actuating position (122);
the automatic control assembly (2) is respectively connected with the first execution station (121) and the second execution station (122), and the air path is controlled to be opened and closed by changing the inlet and outlet of the first execution station (121) and the second execution station (122) during operation so as to control the opening and closing of the pneumatic double-acting control valve (1); and
the emergency assembly (3) comprises a gas storage unit (31) connected in series with the automatic control assembly (2) and a cutting-off unit (32) connected in parallel with the automatic control assembly (2), and the emergency assembly (3) works to control the pneumatic double-acting control valve (1) when the gas circuit fails;
the automatic control component (2) comprises an air source (21), a one-way valve (22), an air filtering and reducing valve (23), a first air control valve (24), a second air control valve (25), a third air control valve (26), a solenoid valve (27) and a pressure switch (29), wherein the air source (21), the one-way valve (22), the air filtering and reducing valve (23) and the first air control valve (24) are sequentially connected in series, the second air control valve (25), the first air control valve (24) and the first execution station (121) are arranged in series, the third air control valve (26), the first air control valve (24) and the second execution station (122) are arranged in series, the solenoid valve (27) is connected in parallel between signal ports of the air filtering and reducing valve (23) and the first air control valve (24), one end of the solenoid valve (27) is connected with the second air control valve (25), the pressure switch (29) is respectively connected with signal ports of the second air control valve (25) and the third air control valve (26), the first air control valve (24) is connected with a fifth air control valve (24) in series, the first air outlet of the first air control valve (24) is connected with the air inlet of the second air control valve (25), and the second air outlet of the first air control valve (24) is connected with the air inlet of the third air control valve (26);
the gas storage unit (31) comprises a gas storage tank (311) and a manual valve (312), one end of the manual valve (312) is connected in series with the automatic control component (2), and the other end of the manual valve (312) is connected in series with the gas storage tank (311);
the cutting unit (32) comprises a fusible plug (321), the fusible plug (321) is connected in series between the air filtering pressure reducing valve (23) and the first pneumatic control valve (24), the connecting point is positioned in front of the connecting point of the electromagnetic valve (27) and the air filtering pressure reducing valve (23) and the first pneumatic control valve (24), the fusible plug (321) is connected with the signal port end of the pressure switch (29), the second pneumatic control valve (25) is a two-position three-way normally closed pneumatic control valve, and the air outlet of the second pneumatic control valve (25) is connected with the first execution station (121);
the third pneumatic control valve (26) is a two-position five-way normally closed pneumatic control valve, and an air outlet of the third pneumatic control valve (26) is connected with the second execution station (122);
the electromagnetic valve (27) is a two-position three-way direct-acting single-electric-control electromagnetic valve, and an air inlet of the electromagnetic valve (27) is connected with an air outlet of the air filtering pressure reducing valve (23).
2. Pneumatic control system of a tank pump isolation emergency shut-off valve according to claim 1, characterized in that a balancing valve (28) is connected in parallel between the second pneumatic control valve (25) and the third pneumatic control valve (26).
3. A pneumatic control system for a canister pump isolation emergency shut-off valve according to claim 1, wherein the exhaust port of the third pneumatic control valve (26) is vented to atmosphere, and a muffler is mounted on the exhaust port of the third pneumatic control valve (26).
4. A pneumatic control system for a tank pump isolation emergency shut-off valve according to claim 1, wherein the exhaust port of the solenoid valve (27) is vented to atmosphere, and a muffler is mounted on the exhaust port of the solenoid valve (27).
5. A pneumatic control system for a canister pump isolation emergency shut-off valve according to claim 1, wherein the exhaust port of the first pneumatic valve (24) is vented to atmosphere, and a muffler is mounted on the exhaust port of the first pneumatic valve (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810010710.0A CN108019538B (en) | 2018-01-05 | 2018-01-05 | Pneumatic control system of tank pump isolation emergency cut-off valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810010710.0A CN108019538B (en) | 2018-01-05 | 2018-01-05 | Pneumatic control system of tank pump isolation emergency cut-off valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108019538A CN108019538A (en) | 2018-05-11 |
| CN108019538B true CN108019538B (en) | 2024-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810010710.0A Active CN108019538B (en) | 2018-01-05 | 2018-01-05 | Pneumatic control system of tank pump isolation emergency cut-off valve |
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| CN113236848B (en) * | 2021-06-03 | 2023-05-26 | 浙江中德自控科技股份有限公司 | Valve control system for automatic cutting off of air source fault |
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| CN113236847B (en) * | 2021-06-03 | 2023-05-02 | 浙江中德自控科技股份有限公司 | Double-acting valve control system for controlling locking of valve lock |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11118064A (en) * | 1997-10-16 | 1999-04-30 | Kyokuto Seisakusho:Kk | Shut-off valve opening system making use of solar battery |
| CN103206424A (en) * | 2013-04-22 | 2013-07-17 | 浙江中德自控阀门有限公司 | Manual and automatic control system for realizing single-action control through pneumatic double-action executing mechanism with gas storage tank |
| CN203297725U (en) * | 2013-04-22 | 2013-11-20 | 浙江中德自控阀门有限公司 | Pneumatic single-action control valve hand-operated and automatic control system |
| CN204004713U (en) * | 2014-06-21 | 2014-12-10 | 重庆海浦洛自动化科技有限公司 | The gas control time is controlled gas circuit |
| CN106122568A (en) * | 2016-08-29 | 2016-11-16 | 浙江中德自控科技股份有限公司 | A kind of pneumatic control valve |
| CN106352121A (en) * | 2016-08-30 | 2017-01-25 | 杭州方圆塑机股份有限公司 | Automatic driving device for balance valve sticking prevention |
| CN207814568U (en) * | 2018-01-05 | 2018-09-04 | 浙江中德自控科技股份有限公司 | A kind of atmospheric control of tank pump isolation quick action emergency valve |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006041872B3 (en) * | 2006-08-31 | 2007-12-20 | Saia-Burgess Dresden Gmbh | Gas regulation and safety valve for burner of gas heating mechanism, has housing with closing units, where one of closing units is driven from spindle nut system, and other unit has sealing body, which is connected with anchor |
| DE102010048070A1 (en) * | 2010-04-16 | 2011-10-20 | Robert Bosch Gmbh | Pressure and flow controller |
-
2018
- 2018-01-05 CN CN201810010710.0A patent/CN108019538B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11118064A (en) * | 1997-10-16 | 1999-04-30 | Kyokuto Seisakusho:Kk | Shut-off valve opening system making use of solar battery |
| CN103206424A (en) * | 2013-04-22 | 2013-07-17 | 浙江中德自控阀门有限公司 | Manual and automatic control system for realizing single-action control through pneumatic double-action executing mechanism with gas storage tank |
| CN203297725U (en) * | 2013-04-22 | 2013-11-20 | 浙江中德自控阀门有限公司 | Pneumatic single-action control valve hand-operated and automatic control system |
| CN204004713U (en) * | 2014-06-21 | 2014-12-10 | 重庆海浦洛自动化科技有限公司 | The gas control time is controlled gas circuit |
| CN106122568A (en) * | 2016-08-29 | 2016-11-16 | 浙江中德自控科技股份有限公司 | A kind of pneumatic control valve |
| CN106352121A (en) * | 2016-08-30 | 2017-01-25 | 杭州方圆塑机股份有限公司 | Automatic driving device for balance valve sticking prevention |
| CN207814568U (en) * | 2018-01-05 | 2018-09-04 | 浙江中德自控科技股份有限公司 | A kind of atmospheric control of tank pump isolation quick action emergency valve |
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| CN108019538A (en) | 2018-05-11 |
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