CN108488454A - A kind of pipeline pressure bleed-off system - Google Patents
A kind of pipeline pressure bleed-off system Download PDFInfo
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- CN108488454A CN108488454A CN201810478729.8A CN201810478729A CN108488454A CN 108488454 A CN108488454 A CN 108488454A CN 201810478729 A CN201810478729 A CN 201810478729A CN 108488454 A CN108488454 A CN 108488454A
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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
- F16K17/20—Excess-flow valves
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Abstract
The invention discloses a kind of pipeline pressure bleed-off systems, belong to field of pipeline equipment.Pressure Relief Valve in pipeline pressure bleed-off system includes valve body, preloading spring, spool, valve seat.The pressure release oil circuit connection of valve body and Crude Oil Transportation pipeline, there is the isolation board with the first groove in valve body, form seal chamber between spool one end and the first groove, the preloading spring in seal chamber gives spool one pretightning force, make spool be formed with valve seat to seal, Pressure Relief Valve is closed.Specified pressure nitrogen is passed through into seal chamber from the air inlet on valve body with pressure reducing valve by the accumulator in nitrogen control subsystem, when pretightning force and nitrogen pressure of the oil pressure on pressure release oil circuit higher than preloading spring in Pressure Relief Valve, nitrogen in seal chamber is compressed at once, spool is pushed to the direction of isolation board, and valve seat is detached with spool.Hydraulic oil in pressure release oil circuit enters in Pressure Relief Valve, and the oil pressure on Crude Oil Transportation pipeline is discharged in time.
Description
Technical field
The present invention relates to field of pipeline equipment, more particularly to a kind of pipeline pressure bleed-off system.
Background technology
Pipeline pressure discharge structure is FPSO (full name in English：Floating Production Storage
AndOffloading, Chinese name：Floating type production, storage and offloading device) Crude Oil transfer pipeline important component, master
Playing prevents Crude Oil Transportation pipeline internal cause hypertonia, the appearance for the problems such as in turn resulting in Crude Oil Transportation conduit failure.
Pipeline pressure discharge structure includes mainly spring Pressure Relief Valve, and the pressure release oil in Crude Oil Transportation pipeline is arranged
On the road, oil pressure is normal in Crude Oil Transportation pipeline, and spring Pressure Relief Valve is protected under the elastic force of spring inside it
Hold closed state.And when oil pressure is excessively high in Crude Oil Transportation pipeline, excessively high oil pressure will overcome the elastic force of spring so that spring
Pressure Relief Valve is opened, and the hydraulic oil in Crude Oil Transportation pipeline is flowed by spring Pressure Relief Valve in pressure release oil circuit at this time,
So that oil pressure excessively high in Crude Oil Transportation pipeline is released.
However, spring Pressure Relief Valve relies primarily on unlatching and the pass of the elastic force control spring Pressure Relief Valve of spring
It closes, since the elasticity modulus of spring is larger, deformation variation is slower, so causing spring Pressure Relief Valve in Crude Oil Transportation pipeline
In the case of middle oil pressure suddenly change, opening and closing reaction can not be timely made, there are security risks.
Invention content
An embodiment of the present invention provides a kind of pipeline pressure bleed-off system, oil pressure pressure in Crude Oil Transportation pipeline can be solved
The problem of power discharges not in time.The technical solution is as follows：
An embodiment of the present invention provides a kind of pipeline pressure bleed-off system, the pipeline pressure bleed-off system includes that pressure is let out
Valve and nitrogen control subsystem are put, the Pressure Relief Valve includes valve body, preloading spring, spool, valve seat, is arranged in the valve body
There are isolation board, the side of the isolation board to be provided with the first groove, one end of the spool is slideably plugged in described first
In groove, it is formed with seal chamber between the spool and first groove, the connection seal chamber is provided on the valve body
Air inlet, be provided with current by pass on the isolation board,
The preloading spring is arranged in the seal chamber, the bottom of one end of the preloading spring and first groove
It offseting, the other end of the preloading spring and one end of the spool offset,
The other end of the spool is fixed with lip ring, and the valve seat is fixed on one end of the valve body, works as institute
When stating the port of lip ring and described valve seat one end and offseting, the pressure releasing valve breakdown, when the lip ring with
When the port interval of described valve seat one end, the Pressure Relief Valve is opened,
The nitrogen control subsystem includes accumulator, pressure reducing valve, check valve, throttle valve and the commutation of the first bi-bit bi-pass
Valve, the output end of the accumulator are connected to the first valve port of the first bi-bit bi-pass reversal valve, first bi-bit bi-pass
Second valve port of reversal valve is connected to the first valve port of the pressure reducing valve, control valve port and the pressure reducing valve of the pressure reducing valve
Second valve port is connected to, and the second valve port of the pressure reducing valve is connected to the first valve port of the throttle valve, and the second of the throttle valve
Valve port is connected to the air inlet, and the first valve port of the check valve is connected to the air inlet, the second valve of the check valve
Mouth is connected to the first valve port of the throttle valve, the gas station simultaneously.
Optionally, the Pressure Relief Valve further includes spool guide sleeve, and the spool guide sleeve includes end plate and cylindrical protrusions,
The cylindrical protrusions are vertically set on the end plate, coaxially offer guiding groove in the cylindrical protrusions, and described
The first through hole coaxial with first groove is offered in one groove, the cylindrical protrusions are plugged in the first through hole
Interior, the end plate is fixed on the other side of the isolation board,
The second circular groove is offered on one end of the spool, and guide protrusions are provided in second circular groove,
The guide protrusions are plugged in the guiding groove, and the preloading spring is set in the cylindrical protrusions and the guiding is convex
On rising.
Optionally, the second through-hole being connected to second circular groove, second through-hole are offered on the end plate
One end far from the first through hole is fixed with plug screw.
Optionally, the nitrogen control subsystem further includes flow-rate adjustment module, and the flow-rate adjustment module includes supplement
Flow control valve and the second bi-bit bi-pass reversal valve, the first valve port and the pressure reducing valve of the second bi-bit bi-pass reversal valve
Second valve port is connected to, and the second valve port of the second bi-bit bi-pass reversal valve is connected to the first valve port of the throttle valve, described
First valve port of supplement flow control valve is connected to the first valve port of the second bi-bit bi-pass reversal valve, the supplement flow tune
Second valve port of section valve is connected to the second valve port of the second bi-bit bi-pass reversal valve.
Optionally, the nitrogen control subsystem includes main road check valve, the first valve port of the main road check valve and institute
State the second valve port connection of pressure reducing valve, the second valve port of the main road check valve and the first of the second bi-bit bi-pass reversal valve
Valve port is connected to.
Optionally, the nitrogen control subsystem further includes the first shut-off valve, and first shut-off valve is arranged in the section
It flows between valve and the second bi-bit bi-pass reversal valve.
Optionally, the hydraulic control system further includes unloading die block, and the die block that unloads includes that third bi-bit bi-pass changes
To valve, release flow control valve and decompressin check valve, the first valve port of the third bi-bit bi-pass reversal valve and the described 2nd 2
The second valve port connection of position two way selected valve, the second valve port of the third bi-bit bi-pass reversal valve and the release flow-rate adjustment
First valve port of valve is connected to, and the second valve port of the release flow control valve is connected to the first valve port of the decompressin check valve,
Second valve port of the decompressin check valve is connected to gas station.
Optionally, the die block that unloads further includes safety valve, the first valve port of the safety valve with described three or two two
The first valve port connection of logical reversal valve, the second valve port of the safety valve are connected to the second valve port of the decompressin check valve.
Optionally, the nitrogen control subsystem further includes pressure sensor, and pressure sensor setting is described the
It one shut-off valve and described unloads between die block.
Optionally, the pipeline pressure bleed-off system further includes explosion-proof tank, and the nitrogen control subsystem is mounted on described
In explosion-proof tank.
The advantageous effect that technical solution provided in an embodiment of the present invention is brought is：Pipeline pressure bleed-off system is set as wrapping
Include Pressure Relief Valve and nitrogen control subsystem.Wherein Pressure Relief Valve includes valve body, preloading spring, spool, valve seat.Tubular valve
Body is connected on the pressure release oil circuit of Crude Oil Transportation pipeline, and the isolation board with the first groove, one end of spool are provided in valve body
Seal chamber is formed between the first groove, the preloading spring in seal chamber can give one pretightning force of spool, make the spool other end
Lip ring offsets with valve seat, and Pressure Relief Valve is closed.Accumulator in nitrogen control subsystem and decompression can be passed through at this time
Valve is passed through the nitrogen of specified pressure from the air inlet on valve body into seal chamber, when the oil pressure on pressure release oil circuit is higher than pressure releasing
The pretightning force of preloading spring and when the summation of nitrogen pressure in valve, nitrogen and preloading spring in seal chamber can be extruded, nitrogen
Enter gas station by check valve, spool is pushed to the direction of isolation board, and valve seat is detached with spool.Hydraulic oil in pressure release oil circuit
Valve body is flowed out into Pressure Relief Valve, and eventually by the current by pass on isolation board.Since the elasticity modulus of nitrogen is smaller,
Can the oil pressure on pressure release oil circuit higher than preloading spring in Pressure Relief Valve pretightning force and nitrogen pressure summation when at once
It is compressed, therefore the oil pressure on Crude Oil Transportation pipeline can be released in time, is reduced in Crude Oil Transportation pipeline due to oil pressure pressure
The possibility that power excessively high situations such as leading to Crude Oil Transportation pipeline and equipment damage occurs.
Description of the drawings
Fig. 1 is a kind of pipeline pressure bleed-off system schematic diagram provided in an embodiment of the present invention；
Fig. 2 is a kind of structural schematic diagram of Pressure Relief Valve provided in an embodiment of the present invention；
Fig. 3 is enlarged drawing at the A of Fig. 2；
Fig. 4 is a kind of hydraulic schematic diagram of nitrogen control subsystem provided in an embodiment of the present invention.
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
Fig. 1 is a kind of pipeline pressure bleed-off system schematic diagram provided in an embodiment of the present invention, as shown in Figure 1, the pipeline pressure
Power bleed-off system includes Pressure Relief Valve 1 and nitrogen control subsystem 2.
Fig. 2 is a kind of structural schematic diagram of Pressure Relief Valve provided in an embodiment of the present invention, as shown in Fig. 2, the pressure is let out
It includes valve body 101, preloading spring 102, spool 103, valve seat 104 to put valve 1.
Isolation board 1011 is provided in valve body 101, the side of isolation board 1011 is provided with the first groove 1011a, spool 103
One end be slideably plugged in the first groove 1011a, be formed with seal chamber between spool 103 and the first groove 1011a
105, it is provided with the air inlet 1012 of communication seals chamber 105 on valve body 101, current by pass is provided with (in figure on isolation board 1011
It is not shown).
Preloading spring 102 is arranged in seal chamber 105, the bottom phase of one end of preloading spring 102 and the first groove 1011a
It supports, one end of the other end and spool 103 of preloading spring 102 offsets, and the other end of spool 103 is fixed with lip ring 106,
Valve seat 104 is fixed on one end of valve body 101, and when the port of lip ring 106 and 104 one end of valve seat offsets, pressure is let out
The shutdown of valve 1 is put, when the port interval of lip ring 106 and 104 one end of valve seat, Pressure Relief Valve 1 is opened.
Fig. 4 is a kind of hydraulic schematic diagram of nitrogen control subsystem provided in an embodiment of the present invention, as shown in figure 4, the nitrogen
Gas control subsystem 2 includes accumulator 201, pressure reducing valve 202, check valve 203, throttle valve 204 and the first bi-bit bi-pass reversal valve
205.The output end of accumulator 201 is connected to the first valve port of the first bi-bit bi-pass reversal valve 205, the first bi-bit bi-pass reversal valve
205 the second valve port is connected to the first valve port of pressure reducing valve 202, the control valve of the second valve port and pressure reducing valve 202 of pressure reducing valve 202
Mouthful connection, the second valve port of 202 valve port of pressure reducing valve is connected to the first valve port of throttle valve 204, the second valve port of throttle valve 204 and
Air inlet 1012 is connected to, and the first valve port of check valve 203 is connected to air inlet, the second valve port of check valve 203 and meanwhile with throttling
First valve port of valve 204, gas station 4 are connected to.
Pipeline pressure bleed-off system is set to include Pressure Relief Valve 1 and nitrogen control subsystem 2.Wherein pressure releasing
Valve 1 includes valve body 101, preloading spring 102, spool 103, valve seat 104.Valve body 101 is connected to the pressure release oil of Crude Oil Transportation pipeline
On the road, the isolation board 1011 with the first groove 1011a, one end of spool 103 and the first groove are provided in valve body 101
Seal chamber 105 is formed between 1011a, the preloading spring 102 in seal chamber 105 can give spool 103 1 pretightning forces, make spool
The lip ring 106 of 103 other ends offsets with valve seat 104, and Pressure Relief Valve 1 is closed.Subsystem can be controlled by nitrogen at this time
Accumulator 201 in system 2 is passed through specified pressure from the air inlet 1012 on valve body 101 with pressure reducing valve 202 into seal chamber 105
Nitrogen, when the oil pressure on pressure release oil circuit is higher than the pretightning force and nitrogen pressure of preloading spring 102 in Pressure Relief Valve 1, sealing
Nitrogen in chamber 105 can be extruded and enter gas station by check valve 203, and spool 103 is pushed to the direction of isolation board 1011,
Valve seat 104 is detached with spool 103.Hydraulic oil in pressure release oil circuit enters in Pressure Relief Valve 1.Due to nitrogen elasticity modulus compared with
It is small, it can be vertical when the oil pressure on pressure release oil circuit is higher than the pretightning force of preloading spring in Pressure Relief Valve and the summation of nitrogen pressure
Quarter is compressed, therefore the oil pressure on Crude Oil Transportation pipeline can be released in time, be reduced in Crude Oil Transportation pipeline due to oil pressure
Hypertonia leads to the possibility occurred situations such as Crude Oil Transportation pipeline and equipment damage.Spool 103 is in valve seat 104 at this time
State separately, current by pass are connected to two ports 1013 of valve body 101.
Further, when the oil pressure on Crude Oil Transportation pipeline is released, the nitrogen pressure in seal chamber 105 refers to less than it
Fixed nitrogen pressure, the nitrogen in accumulator 201 can then be entered by throttle valve 204 in seal chamber 105, Pressure Relief Valve 1
Spool 103 will move under the action of the pretightning force of preloading spring 102 and nitrogen pressure towards the direction of valve seat 104, until valve
The lip ring 106 of core 103 and the port of valve seat 104 offset, and Pressure Relief Valve 1 is closed, the pressure release oil of Crude Oil Transportation pipeline
Road is in barrier state.
It should be noted that gas station 4 is the nitrogen for collecting outflow nitrogen control subsystem 2 in the present embodiment
Device or mechanism.
As shown in Figure 1, pipeline pressure bleed-off system further includes explosion-proof tank 3, nitrogen control subsystem 2 can be mounted on explosion-proof tank
In 3.The safe handling that can guarantee pipeline pressure bleed-off system is arranged in explosion-proof tank 3 in nitrogen control subsystem 2, improves its use
Safety.
Optionally, the both ends of valve body 101 may be provided with connecting flange 107, and valve body 101 is arranged by connecting flange 107
On the pressure release oil circuit of Crude Oil Transportation pipeline.
As shown in Fig. 2, Pressure Relief Valve 1 further includes spool guide sleeve 108.Spool guide sleeve 108 includes end plate 1081 and cylinder
Shape protrusion 1082, cylindrical protrusions 1082 are vertically set on end plate 1081, are offered in the first groove 1011a and the first groove
First through hole 1011b coaxial 1011a, cylindrical protrusions 1082 are plugged in first through hole 1011b, end plate 1081 be fixed on every
The other side from plate 1011 coaxially offers in cylindrical protrusions 1082 and is oriented to groove 1082a.
The second circular groove 1031 is offered on one end of spool 103, and it is convex that guiding is provided in the second circular groove 1031
Play 1031a, guide protrusions 1031a, which is plugged in, to be oriented in groove 1082a, preloading spring 102 be set in cylindrical protrusions 1082 and
On guide protrusions 1031a.Using this structure, it is oriented to the groove 1082a and guide protrusions 1031a on spool 103 and cooperates,
Ensure that spool 103 is moved along the axis direction of valve body 101, avoids that situations such as 103 clamping stagnation of spool is in valve body 101 occurs, ensure
The normal use of spool 103.
As shown in Fig. 2, the second through-hole 1081a being connected to the second circular groove 1031 is offered on end plate 1081, second
The one end of through-hole 1081a far from first through hole 1011b is fixed with plug screw.The the second through-hole 1081a opened up on end plate 1081 can be kept away
Exempt to form complete seal chamber 105 between guiding groove 1082a and guide protrusions 1031a so that guide protrusions 1031a is being oriented to
Sliding in groove 1082a is more easy.
Optionally, it is additionally provided with the gas vent 1011c of communication seals chamber 105 on valve body 101, is arranged on gas vent 1011c
There is blocking.The blocking of gas vent 1011c is extracted, then the gas in seal chamber 105 can be replaced.
Optionally, first annular groove 1011d, first annular groove 1011d can be set on the side wall of the first groove 1011a
Inside it is provided with sealing ring 109.To form seal chamber 105 between the first groove 1011a and spool 103.
Illustratively, valve seat 104 can be sleeve-shaped, and one end may be provided with annular slab, and valve seat 104 can be by being arranged thereon
Annular slab be fixed on valve body 101.
Further, sealing ring 109 can be equally set between valve seat 104 and valve body 101, enhance the sealing of Pressure Relief Valve
Property.
Fig. 3 is enlarged drawing at the A of Fig. 2, as shown in figure 3, Pressure Relief Valve further includes fastener 110 and annular snap-gauge 111,
Annular snap-gauge 111 is fixed on by fastener 110 on spool 103, and it is close that annular is clamped between annular snap-gauge 111 and spool 103
Sealing 106.And lip ring 106 is towards being provided with annular protrusion 1061 on the side of valve seat, annular snap-gauge 110 is towards spool
Side be provided with the second annular groove 1111 of corresponding annular protrusion 1061.It can be by lip ring 106 using this structure
It is secured firmly between spool 103 and annular snap-gauge 111, realizes between 106 sealed valve core 103 of lip ring and valve seat 104
Space while can guarantee that lip ring 106 will not be fallen between spool 103 and annular snap-gauge 111.
As shown in figure 4, nitrogen control subsystem further includes flow-rate adjustment module a, flow-rate adjustment module a includes supplement flow
Regulating valve 206 and the second bi-bit bi-pass reversal valve 207, the first valve port and the pressure reducing valve 202 of the second bi-bit bi-pass reversal valve 207
Second valve port is connected to, and the second valve port of the second bi-bit bi-pass reversal valve 207 is connected to the first valve port of throttle valve 204, supplement stream
206 first valve port of adjustable valve is connected to the first valve port of the second bi-bit bi-pass reversal valve 207, supplement flow control valve 206
Second valve port is connected to the second valve port of the second bi-bit bi-pass reversal valve 207.It is rigid in nitrogen control subsystem using this structure
When starting to be passed through nitrogen into seal chamber, the second bi-bit bi-pass reversal valve 207 is in open state, the nitrogen in accumulator 201
It is inflated simultaneously into seal chamber 105 by the second bi-bit bi-pass reversal valve 207 and supplement flow control valve 206, when seal chamber 105
Interior nitrogen pressure close to its nitrogen specified pressure when, the second bi-bit bi-pass reversal valve 207 can be closed, pass through supplement flow
206 small flow of regulating valve into seal chamber 105 supplying nitrogen, until seal chamber 105 in nitrogen reach specified pressure.It is this
The accuracy of nitrogen pressure in seal chamber 105 can be improved in mode, and the efficiency that nitrogen is supplemented into seal chamber 105 also can be improved.
Further, nitrogen control subsystem 2 include main road check valve 208, the first valve port of main road check valve 208 with subtract
Second valve port of pressure valve 202 is connected to, the first valve of the second valve port of main road check valve 208 and the second bi-bit bi-pass reversal valve 207
Mouth connection.The setting of mainstream check valve can avoid nitrogen reflux to accumulator 201, ensure the normal use of accumulator 201.
As shown in figure 4, hydraulic control system, which may also include, unloads die block b, it includes the commutation of third bi-bit bi-pass to unload die block b
Valve 209, release flow control valve 210 and decompressin check valve 211, the first valve port and second of third bi-bit bi-pass reversal valve 209
Second valve port of bi-bit bi-pass reversal valve 207 is connected to, the second valve port and the release flow-rate adjustment of third bi-bit bi-pass reversal valve 209
First valve port of valve 210 is connected to, and the second valve port of release flow control valve 210 is connected to the first valve port of decompressin check valve 211,
Second valve port of decompressin check valve 211 is connected to gas station 4.When gas pressure is excessively high in nitrogen control subsystem 2, nitrogen can
Decompressin check valve 211 is flowed to gas station from third bi-bit bi-pass reversal valve 209, ensures the gas in nitrogen control subsystem 2
Body pressure is maintained in normally-pressured neighbor, improves the safety in utilization of nitrogen control subsystem 2.
Further, it further includes safety valve 212 to unload die block b, and the first valve port and the third bi-bit bi-pass of safety valve 212 change
It is connected to the first valve port of valve 209, the second valve port of safety valve 212 is connected to the second valve port of decompressin check valve 211.Safety valve
212 setting can guarantee the gas in third bi-bit bi-pass reversal valve 209, release flow control valve 210 and decompressin check valve 211
Pressure is in normal range (NR), and third bi-bit bi-pass reversal valve 209, release flow control valve 210 and decompressin check valve 211 can be improved
Service life.
Optionally, nitrogen control subsystem 2 further includes the first shut-off valve 213, and the first shut-off valve 213 is arranged in throttle valve
204 and second between bi-bit bi-pass reversal valve 207.The setting of first shut-off valve 213 can go wrong in nitrogen control subsystem 2
When close, in order to which staff repairs and tests to nitrogen control subsystem 2.
Illustratively, it the first shut-off valve 213 and unloads pressure sensor 214 can be set between die block b, in order to nitrogen control
Subsystem 2 is monitored and feeds back to the nitrogen pressure in seal chamber 105.
Optionally, the second shut-off valve 215 can be set between accumulator 201 and the first bi-bit bi-pass reversal valve 205.It can avoid
Accumulator 201 is influenced by other structures in nitrogen control subsystem 2.
Optionally, in the present embodiment, the first bi-bit bi-pass reversal valve 205, the second bi-bit bi-pass reversal valve 207 and third
Explosion-proof solenoid valve can be used in bi-bit bi-pass reversal valve 209, occurs in practical work process to reduce nitrogen control subsystem 2
The possibility of the accidents situations such as explosion.
The course of work of this system is further described in combination with Fig. 1 and Fig. 4 below, it should be noted that following
It discusses and the present invention is not construed as limiting.
In following situations, the first shut-off valve 213 and the second shut-off valve 215 are in open state：
When pressure sensor 214 detects that the nitrogen pressure in seal chamber 105 is less than the nitrogen pressure set in seal chamber 105
When power, the first bi-bit bi-pass reversal valve 205 must be electric, and the nitrogen in accumulator 201 is sequentially entered to the second bi-bit bi-pass reversal valve
207, the throttle valve in the first shut-off valve 213 and one-way throttle valve 203 enters in seal chamber 105；Nitrogen in seal chamber 105
When the nitrogen pressure that pressure is set close in seal chamber 105, the second bi-bit bi-pass reversal valve 207 must be electric, and the second bi-bit bi-pass changes
Be closed to valve 207, the nitrogen in accumulator 201 sequentially enter supplement pressure-regulating valve, the first shut-off valve 213 and
Throttle valve in one-way throttle valve 203 enters in seal chamber 105, until the nitrogen pressure in seal chamber 105 reaches its setting
Pressure.
When the nitrogen pressure in nitrogen control subsystem 2 is excessively high, the nitrogen in nitrogen control subsystem 2 can pass sequentially through
Third bi-bit bi-pass reversal valve 209, release flow control valve 210 and decompressin check valve 211 enter gas station 4, to ensure nitrogen
The stabilization of nitrogen pressure in control subsystem 2.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of pipeline pressure bleed-off system, which is characterized in that the pipeline pressure bleed-off system includes Pressure Relief Valve and nitrogen
Gas control subsystem, the Pressure Relief Valve include valve body, preloading spring, spool, valve seat, and isolation is provided in the valve body
The side of plate, the isolation board is provided with the first groove, and one end of the spool is slideably plugged in first groove,
It is formed with seal chamber between the spool and first groove, the air inlet for being connected to the seal chamber is provided on the valve body
Mouthful, it is provided with current by pass on the isolation board,
The preloading spring is arranged in the seal chamber, the bottom phase of one end of the preloading spring and first groove
It supporting, the other end of the preloading spring and one end of the spool offset,
The other end of the spool is fixed with lip ring, and the valve seat is fixed on one end of the valve body, when the ring
When the port of shape sealing element and described valve seat one end offsets, the pressure releasing valve breakdown, when the lip ring with it is described
When the port interval of valve seat one end, the Pressure Relief Valve is opened,
The nitrogen control subsystem includes accumulator, pressure reducing valve, check valve, throttle valve and the first bi-bit bi-pass reversal valve, institute
The output end for stating accumulator is connected to the first valve port of the first bi-bit bi-pass reversal valve, the first bi-bit bi-pass reversal valve
The second valve port be connected to the first valve port of the pressure reducing valve, the pressure reducing valve control valve port and the pressure reducing valve the second valve
Mouthful connection, the second valve port of the pressure reducing valve is connected to the first valve port of the throttle valve, the second valve port of the throttle valve and
The air inlet connection, the first valve port of the check valve are connected to the air inlet, and the second valve port of the check valve is simultaneously
It is connected to the first valve port of the throttle valve, the gas station.
2. pipeline pressure bleed-off system according to claim 1, which is characterized in that the Pressure Relief Valve further includes spool
Guide sleeve, the spool guide sleeve include end plate and cylindrical protrusions, and the cylindrical protrusions are vertically set on the end plate, described
Guiding groove is coaxially offered in cylindrical protrusions, and first coaxial with first groove is offered in first groove and is led to
Hole, the cylindrical protrusions are plugged in the first through hole, and the end plate is fixed on the other side of the isolation board,
The second circular groove is offered on one end of the spool, and guide protrusions are provided in second circular groove, it is described
Guide protrusions are plugged in the guiding groove, and the preloading spring is set in the cylindrical protrusions and the guide protrusions
On.
3. pipeline pressure bleed-off system according to claim 2, which is characterized in that offered on the end plate and described
Second through-hole of two circular grooves connection, the described one end of second through-hole far from the first through hole is fixed with plug screw.
4. according to claims 1 to 3 any one of them pipeline pressure bleed-off system, which is characterized in that nitrogen control
System further includes flow-rate adjustment module, and the flow-rate adjustment module includes that supplement flow control valve and the second bi-bit bi-pass commutate
Valve, the first valve port of the second bi-bit bi-pass reversal valve are connected to the second valve port of the pressure reducing valve, described two or two two
Second valve port of logical reversal valve is connected to the first valve port of the throttle valve, the first valve port of the supplement flow control valve and institute
State the second bi-bit bi-pass reversal valve the first valve port connection, it is described supplement flow control valve the second valve port with described two or two
Second valve port of two way selected valve is connected to.
5. pipeline pressure bleed-off system according to claim 4, which is characterized in that the nitrogen control subsystem includes master
Road check valve, the first valve port of the main road check valve are connected to the second valve port of the pressure reducing valve, the main road check valve
Second valve port is connected to the first valve port of the second bi-bit bi-pass reversal valve.
6. pipeline pressure bleed-off system according to claim 4, which is characterized in that the nitrogen control subsystem further includes
First shut-off valve, first shut-off valve are arranged between the throttle valve and the second bi-bit bi-pass reversal valve.
7. pipeline pressure bleed-off system according to claim 6, which is characterized in that the hydraulic control system further includes unloading
Die block, the die block that unloads includes third bi-bit bi-pass reversal valve, release flow control valve and decompressin check valve, the third
First valve port of bi-bit bi-pass reversal valve is connected to the second valve port of the second bi-bit bi-pass reversal valve, described three or two two
Second valve port of logical reversal valve is connected to the first valve port of the release flow control valve, and the second of the release flow control valve
Valve port is connected to the first valve port of the decompressin check valve, and the second valve port of the decompressin check valve is connected to gas station.
8. pipeline pressure bleed-off system according to claim 7, which is characterized in that the die block that unloads further includes safety
Valve, the first valve port of the safety valve are connected to the first valve port of the third bi-bit bi-pass reversal valve, and the of the safety valve
Two valve ports are connected to the second valve port of the decompressin check valve.
9. pipeline pressure bleed-off system according to claim 8, which is characterized in that the nitrogen control subsystem further includes
Pressure sensor, pressure sensor setting is in first shut-off valve and described unloads between die block.
10. according to claims 1 to 3 any one of them pipeline pressure bleed-off system, which is characterized in that the pipeline pressure is let out
Place system further includes explosion-proof tank, and the nitrogen control subsystem is mounted in the explosion-proof tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810478729.8A CN108488454B (en) | 2018-05-18 | 2018-05-18 | Pipeline pressure relief system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810478729.8A CN108488454B (en) | 2018-05-18 | 2018-05-18 | Pipeline pressure relief system |
Publications (2)
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| CN108488454A true CN108488454A (en) | 2018-09-04 |
| CN108488454B CN108488454B (en) | 2020-06-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113819325A (en) * | 2021-08-23 | 2021-12-21 | 中航光电科技股份有限公司 | Quick connector with pressure relief function |
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| US3177889A (en) * | 1961-12-04 | 1965-04-13 | Schulz Tool & Mfg Co | Float-operated surge relief shutoff valve |
| US4261387A (en) * | 1979-10-01 | 1981-04-14 | Grove Valve And Regulator Company | Pipeline surge relief system |
| CN202392208U (en) * | 2011-12-28 | 2012-08-22 | 西安航天动力研究所 | Pilot-operated type water attack relief valve system |
| CN102777642A (en) * | 2011-05-11 | 2012-11-14 | Spx公司 | Nose seal for surge relief valves |
| CN205331527U (en) * | 2015-12-30 | 2016-06-22 | 上海瑞控阀门有限公司 | Nitrogen gas formula water hammer relief valve |
| CN106439492A (en) * | 2015-08-10 | 2017-02-22 | 北京航天石化技术装备工程有限公司 | Nitrogen type water-attack pressure release valve system |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3177889A (en) * | 1961-12-04 | 1965-04-13 | Schulz Tool & Mfg Co | Float-operated surge relief shutoff valve |
| US4261387A (en) * | 1979-10-01 | 1981-04-14 | Grove Valve And Regulator Company | Pipeline surge relief system |
| CN102777642A (en) * | 2011-05-11 | 2012-11-14 | Spx公司 | Nose seal for surge relief valves |
| CN202392208U (en) * | 2011-12-28 | 2012-08-22 | 西安航天动力研究所 | Pilot-operated type water attack relief valve system |
| CN106439492A (en) * | 2015-08-10 | 2017-02-22 | 北京航天石化技术装备工程有限公司 | Nitrogen type water-attack pressure release valve system |
| CN205331527U (en) * | 2015-12-30 | 2016-06-22 | 上海瑞控阀门有限公司 | Nitrogen gas formula water hammer relief valve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113819325A (en) * | 2021-08-23 | 2021-12-21 | 中航光电科技股份有限公司 | Quick connector with pressure relief function |
| CN113819325B (en) * | 2021-08-23 | 2023-06-27 | 中航光电科技股份有限公司 | Quick connector with pressure relief function |
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| Publication number | Publication date |
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| CN108488454B (en) | 2020-06-26 |
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