CN104913191B - Tank pressurization controller and tank pressurization system - Google Patents

Abstract

The invention provides a tank pressurization controller. The tank pressurization controller is connected with a main valve, a backup valve and a tank, the main valve and the backup valve are connected in parallel, and the tank pressurization controller comprises a main pressurization branch, a backup pressurization branch and a pressure switch; the main pressurization branch is connected with the main valve through the normally closed contact of a relay, and is used for supplying power for the main valve in a conduction state; the backup pressurization branch is connected with the backup valve through the normally open contact of the relay, and is used for supplying power for the backup valve in a conduction state; the relay is used for conducting the main pressurization branch or the backup pressurization branch; and the pressure switch is connected with the relay and the tank, and is used for powering off the relay when the pressure of a gas in the tank is always in a preset working pressure range in order to make the relay conduct the main pressurization branch, and powering on the relay when the pressure of the gas in the tank exceeds the preset working pressure range in order to make the relay conduct the backup pressurization branch.

Description

A kind of tank boost controller and tank pressure charging system

Technical field

The present invention relates to carrier rocket and spacecraft tank supercharging field, in particular it relates to a kind of tank boost controller and tank pressure charging system.

Background technology

Carrier rocket and spacecraft adopt the pressure charging system of gas cylinder storing high pressure gas to be pressurized to tank.At present, known pressure charging system is typically made up of gas cylinder, electromagnetic valve, filter, air relief valve, pressure-regulating valve, easing valve, tank, pressure signal device etc..Pressure charging system is commonly divided into enclosed pressure charging system and open type pressure charging system, and so-called enclosed pressure charging system refers to tank is pressurized according to certain flow by feeding back tank Stress control pressure charging system；So-called open type pressure charging system refers to according to the flow of predetermined design, tank is pressurized, and its boosted flow is not subject to tank Stress control.Regardless of whether being open type pressure charging system or enclosed pressure charging system, being required for guaranteeing keeping the electromagnetic valve connecting with gas cylinder to keep it turned in pressure charging system running, providing pressed gas to ensure that gas cylinder is continuously tank.

In normal operating conditions, tank pressure can be always held at working pressure range, but electromagnetic valve, air relief valve, pressure-regulating valve belong to mechanism's class product, it is in single point failure state, in flight course, as long as there being a unit to lose efficacy, it will lead to thrashing.Therefore adopting Redundancy Design pressure charging system more, and the monitoring of main supercharging branch road working condition, the differentiation of fault, and main supercharging branch road and the switching of backup supercharging branch road, then need to complete using a kind of boost controller.

Content of the invention

For defect of the prior art, it is an object of the invention to provide a kind of can detect tank pressure anomaly and realize tank boost controller and the tank pressure charging system that main supercharging branch road is pressurized branch road switching to backup.

A kind of tank boost controller being provided according to the present invention, is connected with main valve, backup valve and tank it is characterised in that including main supercharging branch road, backup supercharging branch road and pressure switch；

Described main supercharging branch road is connected with described main valve, for powering for described main valve in the on-state by the normally-closed contact of described relay；The normally opened contact that described backup supercharging branch road passes through described relay is connected with described backup valve, for being that described backup valve is powered in the on-state；Described relay is used for turning on described main supercharging branch road or described backup supercharging branch road；

Described pressure switch, is connected with described relay and tank, is used for：

When storage loading pressure is in the state of default working pressure range all the time, make described relay power-off, and then make this relay turn on described main supercharging branch road,

Exceed the state of default working pressure range in storage loading pressure at least once, make described relay power, and then make this relay conducting described backup supercharging branch road.

As a kind of prioritization scheme, described pressure switch comprises housing, and is placed in pneumaticpiston in described housing, elastic mechanism and trigger switch；

One end of described housing is provided with a gas access, and the other end is provided with adjustment lid, and described pneumaticpiston is passed through described elastic mechanism and is connected with described adjustment lid, and described gas access is connected with described tank air chamber；

In the state of tank air pressure increases, described pneumaticpiston is slided near the direction of described adjustment lid along described inner walls by gas push,

In the state of tank air pressure reduces, described pneumaticpiston is promoted by described elastic mechanism and slides to the direction near described gas access along described inner walls；

Described trigger switch is connected with described relay, is used for：

It is off when the sliding stroke of described pneumaticpiston is all the time in the range of preset strokes, makes described relay power-off, and then make described relay turn on described main supercharging branch road,

It is in connected state when the sliding stroke of described pneumaticpiston exceeds preset strokes scope, makes described relay power, and then make this relay conducting described backup supercharging branch road.

As a kind of prioritization scheme, the coil of described relay is connected in parallel with described backup valve, and described trigger switch is in parallel with the normally opened contact of described relay.

As a kind of prioritization scheme, described trigger switch includes the low pressure microswitch in parallel with the normally opened contact of described relay and high pressure microswitch；Upper projection corresponding with described low pressure microswitch is provided with described pneumaticpiston outer wall, and lower convexity corresponding with described high pressure microswitch；

Described upper projection is in the state of described pneumaticpiston slides to the direction of close described gas access and sliding stroke exceeds preset strokes scope, trigger described low pressure microswitch conducting, make described relay power, and then make this relay conducting described backup supercharging branch road；

Described lower convexity is used in the state of described pneumaticpiston slides to the direction of close described adjustment lid and sliding stroke exceeds preset strokes scope, trigger described high pressure microswitch conducting, make described relay power, and then make this relay conducting described backup supercharging branch road.

As a kind of prioritization scheme, state trigger switch and comprise installing rack, little spring, guide plate, conductive fixed point, conductive dynamic point；

Described conductive fixed point is connected with the two ends of the normally opened contact of described relay respectively with conductive dynamic point, and one end of described little spring is fixedly connected with described installing rack, and the other end is connected with described guide plate, and one end of described guide plate is rotatably connected with described conductive fixed point,

Described guide plate is configured to, and when described pneumaticpiston slides into beyond default stroke range, described guide plate is pressed down；

When described guide plate is in and is not pressed down state, away from described conduction dynamic point under the active force of described little spring, described trigger switch is off described guide plate,

When described guide plate is in and is fully depressed state, described guide plate contacts described conduction dynamic point in the presence of pushing, and described trigger switch is in connected state.

As a kind of prioritization scheme, also include one first signal indicator, described first signal indicator and described main supercharging branch circuit parallel connection, under described main supercharging branch road conducting state, described first signal indicator synchronously turns on.

As a kind of prioritization scheme, also include a secondary signal device, described secondary signal device and described backup supercharging branch circuit parallel connection, under described backup supercharging branch road conducting state, described secondary signal device synchronously turns on.

As a kind of prioritization scheme, the working pressure range of described pressure switch comprises upper pressure limit Px2 and low pressure limit Px1；

(1) when tank pneumatic die cushion pressure is less than or equal to described low pressure limit P1, under described low pressure microswitch connected state, meet relational expression (μ_t1-k_pδ_t1)h₁≥ηgm₁+Sp_x1, wherein, μ_t1For pressure switch elastic mechanism rigidity average, k_pFor reliability margin coefficient, δ_t1For pressure switch spring rate variance, h₁For pressure switch elastic mechanism decrement during low pressure, η is maximum vibration overload factor, and g is acceleration of gravity, m₁For pressure switch oscillating mass, S is pneumaticpiston gas-contact area；

When tank pneumatic die cushion pressure is more than described low pressure limit Px1+ Δ P1, described Δ P1 is threshold pression surplus, and described low pressure fine motion is cut-off under open state, meets relational expression (μ_t1+k_pδ_t1)h₁+ηgm₁≥S(p_x1+Δp₁)；

When tank pneumatic die cushion pressure is more than or equal to described upper pressure limit Px2, under described high pressure microswitch connected state, meet relational expression Sp_x1≥ηgm₁+(μ_t1+k_pδ_t1)h₂, wherein, h₂For pressure switch elastic mechanism decrement during high pressure；

When tank pneumatic die cushion pressure is less than described upper pressure limit Px2- Δ P2, described Δ P2 is pressure upper limit surplus, under high pressure microswitch off-state, meets relational expression η gm₁+S(p_x2-Δp₂)≥(μ_t1-k_pδ_t1)h₂；

Wherein, described pneumaticpiston gas-contact area S meets relational expression

$S\≥\frac{2{\mathrm{\ηgm}}_1+2k_p{\mathrm{\δ}}_{t1}{h}_2}{{\mathrm{\Δp}}_2}.$

(2), under described relay off-position, under elastic mechanism effect, described normally-closed contact conducting, normally opened contact disconnect, and meet relational expression (μ_t2-k_pδ_t2)l₁≥ηgm₂

Under described relay power state, under electromagnetic force, described normally-closed contact disconnects, normally opened contact closes,

(A) start to meet relational expression during adhesive

${\mathrm{\μ}}_{c1}-k_p\sqrt{{\left(l_1{\mathrm{\δ}}_{t2}\right)}^2+{\mathrm{\δ}}_{c1}^2+{\mathrm{\δ}}_f^2}\≥{\mathrm{\ηgm}}_2+l_1{\mathrm{\μ}}_{t2}+{\mathrm{\μ}}_f,$

(B) attracting state is kept to meet relational expression

${\mathrm{\μ}}_{c2}-k_p\sqrt{{\left(l_2{\mathrm{\δ}}_{t2}\right)}^2+{\mathrm{\δ}}_{c2}^2}\≥{\mathrm{\ηgm}}_2+l_2{\mathrm{\μ}}_{t2},$

Wherein, described μ_c1It is initially powered electromagnetic force average, μ for relay_t2For redlay spring rigidity average, μ_c2For relay attracting state electromagnetic force average, k_pFor reliability margin coefficient, l₁For amount of spring compression before relay power, l₂For relay attracting state amount of spring compression, δ_t2For redlay spring rigidity variance, δ_c1It is initially powered electromagnetic force variance, δ for relay_c2For relay attracting state electromagnetic force variance, δ_fFor frictional resistance variance, η is maximum vibration overload factor, and g is acceleration of gravity, m₂For relay oscillating mass, μ_t2For redlay spring rigidity average, μ_fFor frictional resistance average.

(3) meet relational expression under described trigger switch conducting state

D≥μ_D1+k_pδ_D1,

For microswitch elastic deformation cut off diameter average, δ_D2For microswitch elastic deformation cut off diameter variance, under trigger switch off-state, meet relational expression

$d\≤{\mathrm{\μ}}_d-\frac{{\mathrm{\ηgm}}_3}{{\mathrm{\μ}}_{t3}}-k_p\sqrt{{\mathrm{\δ}}_d^2+{\left(\frac{{\mathrm{\ηgm}}_3{\mathrm{\δ}}_{t3}}{{\mathrm{\μ}}_{t3}^2}\right)}^2},$

Trigger switch maximum operating currenbt meets relational expression

μ_I-k_pδ_I>=I,

Wherein, described μ_D1Turn on cut off diameter average, k for microswitch_pFor reliability margin coefficient, δ_D1Turn on cut off diameter variance, μ for microswitch_dIt is not turned on diameter average for microswitch is critical, η is maximum vibration overload factor, g is acceleration of gravity, m₃For microswitch oscillating mass, μ_t3For microswitch spring rate average, δ_dIt is not turned on diameter variance, δ for microswitch is critical_t3For microswitch spring rate variance, μ_IFor microswitch critical conduction electric current average, δ_IFor microswitch critical conduction electric current variance.

Based on same aspect design, the present invention also provides a kind of tank pressure charging system, comprises above-mentioned tank boost controller.

Compared with prior art, the present invention has following beneficial effect：

A kind of tank boost controller that the present invention provides and tank pressure charging system are directed to the characteristic quantities such as malfunction monitoring, state switching, conducting disconnection, take electromechanical integration reliability design, achieve monitoring, the differentiation of fault of fault-tolerant pressure charging system main supercharging branch road working condition, and main supercharging branch road with backup supercharging branch road switching, improve the reliability of pressure charging system.

Brief description

In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, in embodiment being described below, the accompanying drawing of required use is briefly described, obviously, drawings in the following description are only some embodiments of the present invention, for those skilled in the art, on the premise of not paying creative work, can also obtain other accompanying drawings according to these accompanying drawings.In accompanying drawing：

Fig. 1 is the circuit theory diagrams of one of multiple alternative embodiments boost controller；

Fig. 2 is the structural representation of one of multiple alternative embodiments pressure switch；

Fig. 3 is the structural representation of the relay in multiple alternative embodiments；

Fig. 4 is the structural representation of the high voltage/low voltage microswitch in multiple alternative embodiments；

Fig. 5 is one of multiple alternative embodiments design of pressure magnitude relationship schematic diagram.

Wherein in figure label represents respectively： CA- first signal indicator, CB- secondary signal device, 11- pneumaticpiston, 12- housing, 13- adjustment lid, 14- elastic mechanism, 15- low pressure microswitch, P_X1A、P_X1B- low-pressure contact, 16- high pressure microswitch, P_X2A、P_X2B- high-voltage contact, 17-O cushion rubber, the coil of 21- relay, 22- armature, 23- casing of relay, 24- push rod, 25- transposition switch, JA1-JA2- normally-closed contact, JB1-JB2- normally opened contact, 251- actuating mechanism, 252- spring, A- main valve, B- backs up valve, A⁺A^-The power connection of-main supercharging branch road, B⁺B^-The power connection of-backup supercharging branch road, C⁺C^-- signal indicator power connection.

Specific embodiment

Below in conjunction with accompanying drawing, in the way of specific embodiment, the present invention is described in detail.Following examples will be helpful to those skilled in the art and further understand the present invention, but the invention is not limited in any way.It should be pointed out that using other embodiments, or embodiment enumerated herein can also be carried out with modification structurally and functionally, without departing from the scope of the present invention and essence.

As shown in figure 1, in a kind of embodiment of tank boost controller that the present invention provides, described tank boost controller is connected with main valve, backup valve and tank, including main supercharging branch road, backup supercharging branch road and pressure switch.

Described main supercharging branch road is connected with described main valve A, for powering for described main valve A in the on-state by the normally-closed contact JA1-JA2 of described relay；Described backup supercharging branch road is connected with described backup valve B, for powering for described backup valve B in the on-state by the normally opened contact JB1-JB2 of described relay；Described relay is used for turning on described main supercharging branch road or described backup supercharging branch road.

Described pressure switch, is connected with described relay and tank, is used for：

When storage loading pressure is in the state of default working pressure range all the time, make described relay power-off, and then make this relay turn on described main supercharging branch road,

Exceed the state of default working pressure range in storage loading pressure at least once, make described relay power, and then make this relay conducting described backup supercharging branch road.

In the present embodiment, as long as after storing the state that default working pressure range occurred once exceeding in loading pressure, the supercharging branch road of power supply is just converted to backup supercharging branch road by shown pressure switch, and does not reverse.This irreversible pressure switch need not detect to the fault of main supercharging branch road, reduce failure detection time and realize being switched fast of power supply circuits, is effectively guaranteed circuit safety in flight way for the aircraft.

As a kind of embodiment, a kind of pressure switch as shown in Figure 2 comprises housing, and is placed in pneumaticpiston in described housing, elastic mechanism and trigger switch；

One end of described housing is provided with a gas access, and the other end is provided with adjustment lid, and described pneumaticpiston is passed through described elastic mechanism and is connected with described adjustment lid, and described gas access is connected with described tank air chamber；

In the state of tank air pressure increases, described pneumaticpiston is slided near the direction of described adjustment lid along described inner walls by gas push,

In the state of tank air pressure reduces, described pneumaticpiston is promoted by described elastic mechanism and slides to the direction near described gas access along described inner walls；

Described trigger switch is connected with described relay, is used for：

It is off when the sliding stroke of described pneumaticpiston is all the time in the range of preset strokes, makes described relay power-off, and then make described relay turn on described main supercharging branch road,

It is in connected state when the sliding stroke of described pneumaticpiston exceeds preset strokes scope, makes described relay power, and then make this relay conducting described backup supercharging branch road.

Described adjustment lid is threadeded with described housing, and the mode that can be threaded into or screw out adjusts the position of this adjustment lid, and then adjusts the stroke of elastic mechanism.

As a kind of embodiment, the coil of described relay is connected in parallel with described backup valve, and described trigger switch is in parallel with the normally opened contact of described relay.

As a kind of embodiment, described trigger switch includes the low pressure microswitch in parallel with the normally opened contact of described relay and high pressure microswitch；Upper projection corresponding with described low pressure microswitch is provided with described pneumaticpiston outer wall, and lower convexity corresponding with described high pressure microswitch；

Described upper projection is in the state of described pneumaticpiston slides to the direction of close described gas access and sliding stroke exceeds preset strokes scope, trigger described low pressure microswitch conducting, make described relay power, and then make this relay conducting described backup supercharging branch road；

Described lower convexity is used in the state of described pneumaticpiston slides to the direction of close described adjustment lid and sliding stroke exceeds preset strokes scope, trigger described high pressure microswitch conducting, make described relay power, and then make this relay conducting described backup supercharging branch road.

Described pressure switch leads to the movement of pneumaticpiston according to the change of tank air pressure, can effectively and real-time and accurately obtain tank air pressure change situation, and described trigger switch is directly to be started in the mobile-initiated mode of pneumaticpiston, not only need not consume energy and can also trigger in time when air pressure change reaches marginal value, energy efficient while ensureing real-time monitoring.In aircraft or spacecraft flight way, energy efficient is one of very important index.

As a kind of embodiment, as shown in figure 4, described trigger switch comprises installing rack, little spring, guide plate, conductive fixed point, conductive dynamic point；

Described conductive fixed point is connected with the two ends of the normally opened contact of described relay respectively with conductive dynamic point, and one end of described little spring is fixedly connected with described installing rack, and the other end is connected with described guide plate, and one end of described guide plate is rotatably connected with described conductive fixed point,

Described guide plate is configured to, and when described pneumaticpiston slides into beyond default stroke range, described guide plate is pressed down；

When described guide plate is in and is not pressed down state, away from described conduction dynamic point under the active force of described little spring, described trigger switch is off described guide plate,

When described guide plate is in and is fully depressed state, described guide plate contacts described conduction dynamic point in the presence of pushing, and described trigger switch is in connected state.

As a kind of embodiment, described tank boost controller also includes one first signal indicator, described first signal indicator and described main supercharging branch circuit parallel connection, and under described main supercharging branch road conducting state, described first signal indicator synchronously turns on.

As a kind of embodiment, described tank boost controller also includes a secondary signal device, described secondary signal device and described backup supercharging branch circuit parallel connection, and under described backup supercharging branch road conducting state, described secondary signal device synchronously turns on.

Wherein, the working pressure range of described pressure switch comprises upper pressure limit Px2 and low pressure limit Px1；

(1) when tank pneumatic die cushion pressure is less than or equal to described low pressure limit P1, under described low pressure microswitch connected state, meet relational expression (μ_t1-k_pδ_t1)h₁≥ηgm₁+Sp_x1, wherein, μ_t1For pressure switch elastic mechanism rigidity average, k_pFor reliability margin coefficient, δ_t1For pressure switch spring rate variance, h₁For pressure switch elastic mechanism decrement during low pressure, η is maximum vibration overload factor, and g is acceleration of gravity, m₁For pressure switch oscillating mass, S is pneumaticpiston gas-contact area；

When tank pneumatic die cushion pressure is more than described low pressure limit Px1+ Δ P1, described Δ P1 is threshold pression surplus, and described low pressure fine motion is cut-off under open state, meets relational expression (μ_t1+k_pδ_t1)h₁+ηgm₁≥S(p_x1+Δp₁)；

When tank pneumatic die cushion pressure is more than or equal to described upper pressure limit Px2, under described high pressure microswitch connected state, meet relational expression Sp_x1≥ηgm₁+(μ_t1+k_pδ_t1)h₂, wherein, h₂For pressure switch elastic mechanism decrement during high pressure；

When tank pneumatic die cushion pressure is less than described upper pressure limit Px2- Δ P2, described Δ P2 is pressure upper limit surplus, under high pressure microswitch off-state, meets relational expression η gm₁+S(p_x2-Δp₂)≥(μ_t1-k_pδ_t1)h₂；

Wherein, described pneumaticpiston gas-contact area S meets relational expression

$S\≥\frac{2{\mathrm{\ηgm}}_1+2k_p{\mathrm{\δ}}_{t1}{h}_2}{{\mathrm{\Δp}}_2}.$

(2), under described relay off-position, under elastic mechanism effect, described normally-closed contact conducting, normally opened contact disconnect, and meet relational expression (μ_t2-k_pδ_t2)l₁≥ηgm₂

Under described relay power state, under electromagnetic force, described normally-closed contact disconnects, normally opened contact closes,

(A) start to meet relational expression during adhesive

${\mathrm{\μ}}_{c1}-k_p\sqrt{{\left(l_1{\mathrm{\δ}}_{t2}\right)}^2+{\mathrm{\δ}}_{c1}^2+{\mathrm{\δ}}_f^2}\≥{\mathrm{\ηgm}}_2+l_1{\mathrm{\μ}}_{t2}+{\mathrm{\μ}}_f,$

(B) attracting state is kept to meet relational expression

${\mathrm{\μ}}_{c2}-k_p\sqrt{{\left(l_2{\mathrm{\δ}}_{t2}\right)}^2+{\mathrm{\δ}}_{c2}^2}\≥{\mathrm{\ηgm}}_2+l_2{\mathrm{\μ}}_{t2},$

Wherein, described μ_c1It is initially powered electromagnetic force average, μ for relay_t2For redlay spring rigidity average, μ_c2For relay attracting state electromagnetic force average, k_pFor reliability margin coefficient, l₁For amount of spring compression before relay power, l₂For relay attracting state amount of spring compression, δ_t2For redlay spring rigidity variance, δ_c1It is initially powered electromagnetic force variance, δ for relay_c2For relay attracting state electromagnetic force variance, δ_fFor frictional resistance variance, η is maximum vibration overload factor, and g is acceleration of gravity, m₂For relay oscillating mass, μ_t2For redlay spring rigidity average, μ_fFor frictional resistance average.

(3) meet relational expression under described trigger switch conducting state

D≥μ_D1+k_pδ_D1,

For microswitch elastic deformation cut off diameter average, δ_D2For microswitch elastic deformation cut off diameter variance,

Relational expression is met under trigger switch off-state

$d\≤{\mathrm{\μ}}_d-\frac{{\mathrm{\ηgm}}_3}{{\mathrm{\μ}}_{t3}}-k_p\sqrt{{\mathrm{\δ}}_d^2+{\left(\frac{{\mathrm{\ηgm}}_3{\mathrm{\δ}}_{t3}}{{\mathrm{\μ}}_{t3}^2}\right)}^2},$

Trigger switch maximum operating currenbt meets relational expression

μ_I-k_pδ_I>=I,

Wherein, described μ_D1Turn on cut off diameter average, k for microswitch_pFor reliability margin coefficient, δ_D1Turn on cut off diameter variance, μ for microswitch_dIt is not turned on diameter average for microswitch is critical, η is maximum vibration overload factor, g is acceleration of gravity, m₃For microswitch oscillating mass, μ_t3For microswitch spring rate average, δ_dIt is not turned on diameter variance, δ for microswitch is critical_t3For microswitch spring rate variance, μ_IFor microswitch critical conduction electric current average, δ_IFor microswitch critical conduction electric current variance.

Based on same inventive concept, the present invention also provides a kind of tank pressure charging system, comprises aforesaid tank boost controller.

A kind of boost controller in Fig. 2, including：Pressure switch, relay, contact signal device.Pressure switch (is included by pneumaticpiston 11, housing 12, adjustment lid 13, elastic mechanism 14, low pressure microswitch 15：Low-pressure contact P_X1A、P_X1B), high pressure microswitch 16 (includes：High-voltage contact P_X2A、P_X2B), O cushion rubber 17 forms, and the entrance of pressure switch is connected with tank pneumatic die cushion by connecting pipe.A kind of relay as shown in Figure 3 is made up of the coil 21 of relay, armature 22, casing of relay 23, push rod 24, transposition switch 25, and wherein, transposition switch 25 includes：Normally-closed contact JA1-JA2, normally opened contact JB1-JB2, actuating mechanism 251, spring 252.Main valve A, normally-closed contact JA1-JA2, the power connection A of main supercharging branch road⁺A^-Between pass through wired in series.Pass through conductor in parallel, normally opened contact JB1-JB2, low-pressure contact P between the coil 21 of relay, backup valve B_X1A、P_X1B, high-voltage contact P_X2A、P_X2Pass through conductor in parallel between B；The coil 21 of relay, backup valve B, normally opened contact JB1-JB2, low-pressure contact P_X1A、P_X1B, high-voltage contact P_X2A、P_X2B is pressurized the power connection B of branch road with backup⁺B^-Between pass through wired in series.The circuit theory diagrams of this boost controller are as shown in figure 1, Fig. 2 is another kind of deformation.

As depicted in figs. 1 and 2, contact signal device is made up of the first signal indicator CA, secondary signal device CB, wherein, the first signal indicator CA and normally-closed contact JA1-JA2, signal indicator power connection C⁺C^-By wired in series, secondary signal device CB and normally opened contact JB1-JB2, signal indicator power connection C⁺C^-By wired in series, the first signal indicator CA, secondary signal device CB are respectively used to detect normally-closed contact JA1-JA2, the break-make of normally opened contact JB1-JB2.Main valve A is connected with main supercharging way solenoid valve plug, and backup valve B is connected with backup supercharging way solenoid valve plug, the power connection A of main supercharging branch road⁺A^-, backup supercharging branch road power connection B⁺B^-, signal indicator power connection C⁺C^-It is connected with power supply respectively.

Before pressure charging system starts, the power connection A of main supercharging branch road⁺A^-Power connection B with backup supercharging branch road⁺B^-It is in off-position, signal indicator power connection C⁺C^-It is in power supply state, tank pneumatic die cushion pressure is in p_X0Between ± Δ p.Low pressure microswitch 15 (the low-pressure contact P of pressure switch_X1A、P_X1B), high pressure microswitch 16 (high-voltage contact P_X2A、P_X2B) it is in open position during original state；The normally-closed contact JA1-JA2 closure of transposition switch 25, monitors by the first signal indicator CA, the normally opened contact JB1-JB2 of transposition switch 25 disconnects, and monitors by secondary signal device CB, and is classified as one of takeoff condition of aircraft.Above-mentioned each pressure value magnitude relationship is referring to Fig. 5.

To the power connection A of boost controller main supercharging branch road after aircraft takeoff⁺A^-Power connection B with backup supercharging branch road⁺B^-Power up, the normally-closed contact JA1-JA2 due to the switch 25 that now replaces is in closure state, therefore, main valve A is energized, the main supercharging branch road of pressure charging system starts.Under main supercharging branch road normal operating conditions, tank pneumatic die cushion pressure is in p_X1+Δp₁With p_X2-Δp₂Between, low pressure microswitch 15 (the low-pressure contact P of pressure switch_X1A、P_X1B), high pressure microswitch 16 (high-voltage contact P_X2A、P_X2B) it is in open position, the coil 21 of relay is in off-position, and the normally-closed contact JA1-JA2 of transposition switch 25 is in closure state, normally opened contact JB1-JB2 is off.Now pressure charging system passes through main supercharging branch road supercharging, and B branch road is in Status of Backups.

If main supercharging branch road breaks down, when tank pneumatic die cushion pressure p_X≤p_X1When, low pressure microswitch 15 (low-pressure contact P_X1A、P_X1B) be triggered connection, and the coil 21 of relay is energized；Or tank pneumatic die cushion pressure p ought occur_X≥p_X2When, low pressure microswitch 15 (high-voltage contact P_X2A、P_X2B) be triggered connection, and the coil 21 of relay is energized.After both of these case occurs, the armature 22 of relay promotes push rod 24 to move downward in the presence of the electromagnetic force of the coil 21 of relay, and then promote the actuating mechanism 251 of transposition switch 25 to replace, realize normally-closed contact JA1-JA2 disconnection, the normally opened contact JB1-JB2 closure of transposition switch 25, and then close main supercharging branch road, start backup branch road supercharging.

After backup branch road supercharging starts, relay passes through the power connection B of backup supercharging branch road⁺B^-Power supply, the normally-closed contact JA1-JA2 of transposition switch 25 maintains off-state, normally opened contact JB1-JB2 to maintain closure state, although tank pneumatic die cushion pressure recovery is to p_X0Low pressure microswitch 15 (low-pressure contact P is led between ± Δ p_X1A、P_X1B), high pressure microswitch 16 (high-voltage contact P_X2A、P_X2B) disconnect, but because normally opened contact JB1-JB2 is in closure state, then the coil 21 of relay is in "on" position, and then make normally opened contact JB1-JB2 maintain closure state always.Therefore, even if storage tank pressure recovers normal, tank pressure charging system continues to the working condition maintaining main supercharging branch road to disconnect, back up branch road supercharging.

The foregoing is only presently preferred embodiments of the present invention, those skilled in the art know, without departing from the spirit and scope of the present invention, various changes or equivalent can be carried out to these features and embodiment.In addition, under the teachings of the present invention, these features and embodiment can be modified to adapt to particular situation and material without departing from the spirit and scope of the present invention.Therefore, the present invention is not limited to the particular embodiment disclosed, and the embodiment in the range of fallen with claims hereof broadly falls into protection scope of the present invention.

Claims (9)

1. a kind of tank boost controller, with main valve, backup valve and tank be connected it is characterised in that Including main supercharging branch road, backup supercharging branch road and pressure switch；

Described main supercharging branch road is connected with described main valve by the normally-closed contact of relay, in conducting shape It is that described main valve is powered under state；Described backup supercharging branch road by the normally opened contact of described relay with described Backup valve is connected, for being that described backup valve is powered in the on-state；Described relay is used for turning on Described main supercharging branch road or described backup supercharging branch road；

Described pressure switch, is connected with described relay and tank, is used for：

When storage loading pressure is in the state of default working pressure range all the time, make described relay Device power-off, and then make this relay turn on described main supercharging branch road,

Storage loading pressure at least once exceed default working pressure range state, make described in continue Electrical equipment is energized, and then makes this relay conducting described backup supercharging branch road.

2. a kind of tank boost controller according to claim 1 is it is characterised in that described pressure is opened Pass comprises housing, and is placed in pneumaticpiston in described housing, elastic mechanism and trigger switch；

One end of described housing is provided with a gas access, and the other end is provided with adjustment lid, and described pneumaticpiston passes through Described elastic mechanism is connected with described adjustment lid, and described gas access is connected with described tank air chamber；

In the state of tank air pressure increases, described pneumaticpiston is by gas push along described inner walls to leaning on Slide in the direction of closely described adjustment lid,

In the state of tank air pressure reduces, described pneumaticpiston is promoted along described housing by described elastic mechanism Inwall slides to the direction near described gas access；

Described trigger switch is connected with described relay, is used for：

It is off when the sliding stroke of described pneumaticpiston is all the time in the range of preset strokes, make institute State relay power-off, and then make described relay turn on described main supercharging branch road,

Described pneumaticpiston sliding stroke exceed preset strokes scope when be in connected state, make described in continue Electrical equipment is energized, and then makes this relay conducting described backup supercharging branch road.

3. a kind of tank boost controller according to claim 2 is it is characterised in that described relay Coil with described backup valve be connected in parallel, described trigger switch is in parallel with the normally opened contact of described relay.

4. a kind of tank boost controller according to claim 2 is it is characterised in that described triggering is opened Close and include the low pressure microswitch in parallel with the normally opened contact of described relay and high pressure microswitch；Described gas It is provided with upper projection corresponding with described low pressure microswitch on pressure piston outer wall, and open with described high pressure fine motion Close corresponding lower convexity；

Described upper projection is for sliding and slip near the direction of described gas access in described pneumaticpiston In the state of stroke exceeds preset strokes scope, triggering described low pressure microswitch conducting, make described relay Energising, and then make this relay conducting described backup supercharging branch road；

Described lower convexity is used for sliding and the row that slides near the direction of described adjustment lid in described pneumaticpiston In the state of journey exceeds preset strokes scope, triggering described high pressure microswitch conducting, so that described relay is led to Electricity, and then make this relay conducting described backup supercharging branch road.

5. a kind of tank boost controller according to claim 2 is it is characterised in that described triggering is opened Pass comprises installing rack, little spring, guide plate, conductive fixed point, conductive dynamic point；

Described conductive fixed point is connected with the two ends of the normally opened contact of described relay respectively with conductive dynamic point, described One end of little spring is fixedly connected with described installing rack, and the other end is connected with described guide plate, and the one of described guide plate End is rotatably connected with described conductive fixed point,

Described guide plate is configured to, when described pneumaticpiston slides into beyond default stroke range, described Guide plate is pressed down；

When described guide plate is in and is not pressed down state, described guide plate under the active force of described little spring away from Described conduction dynamic point, described trigger switch is off,

When described guide plate is in and is fully depressed state, described guide plate contact in the presence of pushing described in lead Electric point, described trigger switch is in connected state.

6. a kind of tank boost controller according to claim 1 is it is characterised in that also include one One signal indicator, described first signal indicator and described main supercharging branch circuit parallel connection, in described main supercharging branch road conducting shape Under state, described first signal indicator synchronously turns on.

7. a kind of tank boost controller according to claim 1 is it is characterised in that also include one Binary signal device, described secondary signal device and described backup supercharging branch circuit parallel connection, lead in described backup supercharging branch road Under logical state, described secondary signal device synchronously turns on.

8. a kind of tank boost controller according to claim 5 is it is characterised in that described pressure The working pressure range of switch comprises upper pressure limit Px2 and low pressure limit Px1；

(1) when tank pneumatic die cushion pressure is less than or equal to described low pressure limit P1, under low pressure microswitch connected state, Meet relational expression (μ_t1-k_pδ_t1)h₁≥ηgm₁+Sp_x1, wherein, μ_t1For pressure switch elastic mechanism rigidity average, k_pFor reliability margin coefficient, δ_t1For pressure switch spring rate variance, h₁For pressure switch elastic mechanism pressure during low pressure Contracting amount, η is maximum vibration overload factor, and g is acceleration of gravity, m₁For pressure switch oscillating mass, S is air pressure work Plug gas-contact area；

When tank pneumatic die cushion pressure is more than described low pressure limit Px1+ Δ P1, described Δ P1 is threshold pression surplus, described low Pressure fine motion is cut-off under open state, meets relational expression (μ_t1+k_pδ_t1)h₁+ηgm₁≥S(p_x1+Δp₁)；

When tank pneumatic die cushion pressure is more than or equal to described upper pressure limit Px2, under high pressure microswitch connected state, meet and close It is formula Sp_x1≥ηgm₁+(μ_t1+k_pδ_t1)h₂, wherein, h₂For pressure switch elastic mechanism decrement during high pressure；

When tank pneumatic die cushion pressure is less than described upper pressure limit Px2- Δ P2, described Δ P2 is pressure upper limit surplus, and high pressure is micro- Under dynamic switch off state, meet relational expression η gm₁+S(p_x2-Δp₂)≥(μ_t1-k_pδ_t1)h₂；

Wherein, described pneumaticpiston gas-contact area S meets relational expression

$S\≥\frac{2{\mathrm{\ηgm}}_1+2k_p{\mathrm{\δ}}_{t1}{h}_2}{{\mathrm{\Δp}}_2};$

(2), under described relay off-position, under elastic mechanism effect, described normally-closed contact conducting, normally opened contact break Open, meet relational expression (μ_t2-k_pδ_t2)l₁≥ηgm₂

Under described relay power state, under electromagnetic force, described normally-closed contact disconnects, normally opened contact closes,

(A) start to meet relational expression during adhesive

${\mathrm{\μ}}_{c1}-k_p\sqrt{{\left(l_1{\mathrm{\δ}}_{t2}\right)}^2+{\mathrm{\δ}}_{c1}^2+{\mathrm{\δ}}_f^2}\≥{\mathrm{\ηgm}}_2+l_1{\mathrm{\μ}}_{t2}+{\mathrm{\μ}}_f,$

(B) attracting state is kept to meet relational expression

${\mathrm{\μ}}_{c2}-k_p\sqrt{{\left(l_2{\mathrm{\δ}}_{t2}\right)}^2+{\mathrm{\δ}}_{c2}^2}\≥{\mathrm{\ηgm}}_2+l_2{\mathrm{\μ}}_{t2},$

Wherein, described μ_c1It is initially powered electromagnetic force average, μ for relay_t2For redlay spring rigidity average, μ_c2For continuing Electrical equipment attracting state electromagnetic force average, k_pFor reliability margin coefficient, l₁For amount of spring compression before relay power, l₂For Relay attracting state amount of spring compression, δ_t2For redlay spring rigidity variance, δ_c1It is initially powered electromagnetic force side for relay Difference, δ_c2For relay attracting state electromagnetic force variance, δ_fFor frictional resistance variance, η is maximum vibration overload factor, g For acceleration of gravity, m₂For relay oscillating mass, μ_t2For redlay spring rigidity average, μ_fFor frictional resistance average；

(3) meet relational expression under described trigger switch conducting state

D≥μ_D1+k_pδ_D1,

For microswitch elastic deformation cut off diameter average, δ_D2For microswitch elastic deformation cut off diameter side Difference,

Relational expression is met under trigger switch off-state

$d\≤{\mathrm{\μ}}_d-\frac{{\mathrm{\ηgm}}_3}{{\mathrm{\μ}}_{t3}}-k_p\sqrt{{\mathrm{\δ}}_d^2+{\left(\frac{{\mathrm{\ηgm}}_3{\mathrm{\δ}}_{t3}}{{\mathrm{\μ}}_{t3}^2}\right)}^2},$

Trigger switch maximum operating currenbt I meets relational expression

μ_I-k_pδ_I>=I,

Wherein, described μ_D1Turn on cut off diameter average, k for microswitch_pFor reliability margin coefficient, δ_D1For micro- Dynamic switch conduction cut off diameter variance, μ_dIt is not turned on diameter average for microswitch is critical, η is maximum vibration overload factor, G is acceleration of gravity, m₃For microswitch oscillating mass, μ_t3For microswitch spring rate average, δ_dOpen for fine motion Pass is critical to be not turned on diameter variance, δ_t3For microswitch spring rate variance, μ_IEqual for microswitch critical conduction electric current Value, δ_IFor microswitch critical conduction electric current variance.

9. a kind of tank pressure charging system is it is characterised in that comprise the tank supercharging as described in claim 1-8 Controller.