CN201916494U - Multi-step low-pressure regulating valve for small-flow gas - Google Patents
Multi-step low-pressure regulating valve for small-flow gas Download PDFInfo
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- CN201916494U CN201916494U CN2010206929184U CN201020692918U CN201916494U CN 201916494 U CN201916494 U CN 201916494U CN 2010206929184 U CN2010206929184 U CN 2010206929184U CN 201020692918 U CN201020692918 U CN 201020692918U CN 201916494 U CN201916494 U CN 201916494U
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- 210000004907 gland Anatomy 0.000 claims description 11
- 239000007789 gas Substances 0.000 description 55
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- 238000007789 sealing Methods 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 4
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- 230000033001 locomotion Effects 0.000 description 3
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Abstract
A multi-step low-pressure regulating valve for small-flow gas comprises a cylinder and pistons. A gas inlet hole and a gas outlet connector are arranged on the cylinder and are respectively communicated to a gas storage cavity. A first connecting sleeve is connected with the cylinder in a threaded fit manner and provided with a first gas inlet connector and a first throttling gas inlet hole, and a first piston cavity which is respectively communicated with the first throttling gas inlet hole of the first connecting sleeve and the gas inlet hole of the cylinder is formed between the first throttling gas inlet hole of the first connecting sleeve and the gas inlet hole of the cylinder. A second connecting sleeve is connected with the first connecting sleeve in a threaded fit manner and provided with a second gas inlet connector and a second throttling gas inlet hole which are used for being connected with gas storage equipment, and a second piston cavity which is respectively communicated with the second throttling gas inlet hole of the second connecting sleeve and the first throttling gas inlet hole of the first connecting sleeve is formed between the second throttling gas inlet hole of the second connecting sleeve and the first throttling gas inlet hole of the first connecting sleeve. High-pressure gas enters the gas inlet connector, is throttled by the throttling gas inlet holes of the threaded connecting sleeves and the throttle holes on the pistons, and accordingly is changed into low-pressure gas to be output further.
Description
Technical field
The utility model relates to a kind of gas pressure modulating valve, and particularly a kind of low pressure modulating valve that is used to control small-flow gas is applicable to that gas output pressure is lower but needs accurately constant occasion, as aerated water machine, light sparkling wine machine etc.
Background technique
The low pressure modulating valve that is used for small-flow gas at present mostly is a piston type single stage of pressure modulating valve, this device is when carrying out accurate pressure control to small-flow gas, the defective that exists mainly contains: one, the pressure difference of input and output gas is too big, incoming pressure as gas is generally 15MPa, but delivery pressure only is 0.3MPa, and both differ 50 times.That is to say that delivery pressure only is 2% of incoming pressure, when the coefficient of stiffiness of pressure regulating spring or piston damping constant generation minor variations, delivery pressure changes and exceeds the delivery pressure setting value probably; Delivery pressure changed too greatly and very difficultly accurately is locked on the setting pressure when two, pressure was regulated.Therefore, a kind of multistage pressure modulating valve that is exclusively used in small-flow gas is sought in related domain, overcomes above-mentioned problem.
Summary of the invention
The object of the invention is exactly that a kind of multistage low pressure modulating valve that is exclusively used in the control small-flow gas will be provided.
Technological scheme of the present invention provides a kind of multistage low pressure modulating valve that is used for small-flow gas, and it comprises cylinder block, has air storing cavity in the cylinder block, and cylinder block is provided with inlet hole and the interface of giving vent to anger, and the inlet hole and the interface of giving vent to anger are communicated to air storing cavity respectively; First connecting sleeve, first connecting sleeve connects on screw-thread fit ground mutually with cylinder block, the first throttle inlet hole that first connecting sleeve has first intake interface, is connected with first intake interface forms the first piston chamber that is connected with both respectively between the inlet hole of the first throttle inlet hole of first connecting sleeve and cylinder block; Second connecting sleeve, second connecting sleeve connects on screw-thread fit ground mutually with first connecting sleeve, second connecting sleeve has second intake interface that is used for being connected with gas storage equipment, the second throttling inlet hole that is connected with second intake interface, forms second piston cavity that is connected with both respectively between the first throttle inlet hole of the second throttling inlet hole of second connecting sleeve and first connecting sleeve; First piston is arranged within the first piston chamber, and it has first vent and first segment discharge orifice, is used for the throttling inlet hole from first connecting sleeve is entered the inlet hole that gas in the first piston chamber exports to cylinder block; Second piston is arranged within second piston cavity, and it has second vent and second throttle orifice, is used for the second throttling inlet hole from second connecting sleeve is entered the first throttle inlet hole that gas in second piston cavity exports to first connecting sleeve.
Further, it also comprises pressure regulating spring, pressure regulating spring is used for providing an active force to piston, make piston have the trend that the inlet hole towards cylinder block moves, pressure regulating spring comprise be arranged on first pressure regulating spring between the cylinder block and first connecting sleeve and be arranged on first connecting sleeve and second connecting sleeve between second pressure regulating spring.
Further, first piston comprises the first piston and first small piston, the diameter of first piston is greater than the diameter of first small piston, the first piston chamber correspondingly comprises the first piston cavity and the first small piston chamber, first piston is arranged in the cylinder block, first small piston is arranged in first connecting sleeve, first pressure regulating spring is enclosed within on first small piston, first pressure regulating spring provides a pressure for first piston, first connecting sleeve is provided with first spring groove, and first pressure regulating spring embeds in this first spring groove.
Further, second piston comprises the second largest piston and second small piston, the diameter of second largest piston is greater than the diameter of second small piston, second piston cavity correspondingly comprises the second largest piston cavity and the second small piston chamber, second largest piston is arranged in first connecting sleeve, second small piston is arranged in second connecting sleeve, second pressure regulating spring is enclosed within on second small piston, second pressure regulating spring provides a pressure for second largest piston, second connecting sleeve is provided with second spring groove, and second pressure regulating spring embeds in this second spring groove.
Further, first piston have first plug with the adjoining end of the first throttle inlet hole of first connecting sleeve, between first connecting sleeve relative and first plug, one section space that is used to enter air-flow is arranged with first plug.
Further, second piston have second plug with the adjoining end of the second throttling inlet hole of second connecting sleeve, between second connecting sleeve relative and second plug, one section space that is used to enter air-flow is arranged with second plug.
Further, first vent on the first piston is along the radially extension of first piston, first vent radially is communicated to the first piston chamber, and the first segment discharge orifice on the first piston is along the axial connection of first piston, and axial first segment discharge orifice is connected with first vent.
Further, second vent on second piston is along the radially extension of second piston, second vent radially is communicated to second piston cavity, and second throttle orifice on second piston is along the axial connection of second piston, and the second axial throttle orifice is connected with second vent.
Further, have relief valve connection that is communicated with air storing cavity and the relief hole that is used to discharge gas that is connected with this relief valve connection on the cylinder block, in this relief valve connection, safety valve is installed, is used for the gas circuit between air storing cavity and the relief hole is cut off or opened.
Further, safety valve comprises spool, be enclosed within on the spool and provide the spring of active force, the gland in the relief valve connection that is fixed on to spool, and spool passes gland and is inserted in movably in the relief valve connection, and spring is arranged between spool and the gland.
The present invention compared with prior art, has following advantage: by the identical pressure regulator of a plurality of structures multistage low-pressure modulating valve of composition of contacting, the pressure difference of the input and output gas of each stage pressure controlling device just can reduce greatly, just the regulation range of each stage pressure reduces greatly, every increase first class pressure controlling device has also just increased the multiple throttling of one-level simultaneously, make that the delivery pressure of whole pressure regulator is more steady, pressure is regulated more convenient, more is applicable to the accurate control of the delivery pressure of small-flow gas.
Description of drawings
Accompanying drawing 1 be according among the utility model embodiment a kind of structural representation of two-stage gas pressure regulator valve.
Wherein: 1, second connecting sleeve; 10, second outside thread; 11, the second small piston chamber; 12, first thimble; 13, the second throttling inlet hole; 14, second spring groove; 15, the second pressure regulation seal ring; 16, air inlet sealing gasket; 17, second thimble; 18, second plug; 19, second pressure regulating spring; 2, first connecting sleeve; 20, first outside thread; 21, the first small piston chamber; 22, first plug; 23, first throttle inlet hole; 24, first spring groove; 25, second largest piston cavity; 26, second internal thread; 27, the first pressure regulation seal ring; 28, the 3rd thimble; 29, first pressure regulating spring; 3, cylinder block; 30, first internal thread; 31, first piston cavity; 32, inlet hole; 33, exhaust port; 34, pressure gauge connection; 35, air storing cavity; 36, relief valve connection; 37, relief hole; 4, pressure gauge; 5, safety valve; 51, spool; 52, spring; 53, gland; 54, handle; 6, air cylinder; 7, air cylinder air valve; 71, air valve chamber; 72, gas valve core; 75, spring for valve; 76, spring for valve groove; 77, T shape transfer port; 8, first piston; 81, first piston; 82, first small piston; 9, second piston; 91, second largest piston; 92, second small piston.
Embodiment
Below in conjunction with accompanying drawing specific embodiments of the invention are described in detail.
Referring to multistage low pressure modulating valve shown in Figure 1, it comprises cylinder block 3, first connecting sleeve 2, second connecting sleeve 1 and the piston.Has first outside thread 20 on first connecting sleeve 2, has first internal thread 30 on the cylinder block 3, cooperation by first outside thread 20 and first internal thread 30, make cylinder block 3 and first connecting sleeve 2 mutually screw-thread fit connect, and the first pressure regulation seal ring 27 should be set preferably between the cylinder block 3 and first connecting sleeve 2, to keep sealing effect, has second outside thread 10 on second connecting sleeve 1, has second internal thread 26 on first connecting sleeve 2, by cooperating of second outside thread 10 and second internal thread 26, make second connecting sleeve 1 and first connecting sleeve 2 mutually screw-thread fit connect, and the second pressure regulation seal ring 15 preferably should be set between second connecting sleeve 1 and first connecting sleeve 2, to keep sealing effect.
First connecting sleeve 2 can be made of several external members with cylinder body that communicates, and first external member and cylinder block 3 connect on screw-thread fit ground mutually, is connected by threads engaged between last external member and cylinder block 3 screw-thread fit ground connection mutually, external member and external member.In the present embodiment, first connecting sleeve 2 is made of an external member, and this example is only done a technical explanation, does not retrain in the utility model the quantity of external member in first connecting sleeve 2.
Form the first piston chamber between first connecting sleeve 2 and cylinder block 3, first piston 8 is in the first piston chamber movably.The shape of first piston 8 can be cylindricality or other shapes, in desirable embodiment shown in Figure 2, first piston 8 is a T shape, be that its first piston 8 comprises the first piston 81 and first small piston 82, the diameter of first piston 81 is greater than the diameter of first small piston 82, the first piston chamber correspondingly comprises the first piston cavity 31 and the first small piston chamber 21, first piston 8 is arranged in the cylinder block 3, first small piston 82 is arranged in first connecting sleeve 2, first pressure regulating spring 29 is enclosed within on first small piston 82, first pressure regulating spring 29 provides a pressure for first piston 82, first connecting sleeve 2 is provided with first spring groove, 24, the first pressure regulating springs 29 and embeds in this first spring groove 24.And when relative first connecting sleeve, 2 rotary cylinder bodies 3 forward or backwards, first pressure regulating spring 29 will be compressed or discharge.
Form second piston cavity between first connecting sleeve 2 and second connecting sleeve 1, second piston 9 is in second piston cavity movably.The shape of second piston 9 can be cylindricality or other shapes, in desirable embodiment shown in Figure 2, second piston 9 is a T shape, be that its second piston 9 comprises the second largest piston 91 and second small piston 92, the diameter of second largest piston 91 is greater than the diameter of second small piston 92, second piston cavity correspondingly comprises the second largest piston cavity 25 and the second small piston chamber 11, second largest piston 91 is arranged in first connecting sleeve 2, second small piston 92 is arranged in second connecting sleeve 1, second pressure regulating spring cover 19 is on second small piston 92, second pressure regulating spring 19 provides a pressure for second largest piston 91, second connecting sleeve 1 is provided with second spring groove, 14, the second pressure regulating springs 19 and embeds in this second spring groove 14.And when relative second connecting sleeve 1 rotation, first connecting sleeve 2 forward or backwards, second pressure regulating spring 19 will be compressed or discharge.
Offer the second throttling inlet hole 13 on second connecting sleeve 1, second connecting sleeve 1 has second intake interface that is communicated with the second throttling inlet hole 13, when practical application, air cylinder 6 inserts this second intake interface, and, can arrange air inlet sealing gasket 16 between the air cylinder 6 and second connecting sleeve 1, to keep sealing effect, this is a common technology.Offer first throttle inlet hole 23, the first connecting sleeves 2 on first connecting sleeve 2 and have first intake interface that is connected with first throttle inlet hole 23, first intake interface is connected with the second throttling inlet hole 13.When first connecting sleeve 2 is made of a plurality of external members, corresponding throttling inlet hole all is set on each external member, each external member all has the intake interface with corresponding throttling inlet hole phase, and each intake interface all is connected with adjacent throttling inlet hole.
Can be in the outlet port of air cylinder 6 according to shown in Fig. 1 and 2 air cylinder air valve 7 being set like that, this air cylinder air valve 7 has air valve chamber 71, gas valve core 72, spring for valve 75, spring for valve groove 76 and T shape transfer port 77, gas valve core 72 is in the air valve chamber 71, offer T shape transfer port 77 on the gas valve core 72, spring for valve 75 is in the spring for valve groove 76, and spring for valve 75 is supporting gas valve core 72 and air-supply valve core 72 provides a pressure.
The end (being shown as the lower end among Fig. 1) with the intake interface vicinity of second connecting sleeve 1 has first thimble 12, second connecting sleeve 1 have second thimble 17 with ends first connecting sleeve, 2 intake interfaces (being shown as the upper end among Fig. 1), end (being shown as the upper end among Fig. 1) with intake interface cylinder block 3 first connecting sleeve 2 has the 3rd thimble 28, first throttle inlet hole 23 is applied between second thimble 17 and the 3rd thimble 28, and the second throttling inlet hole 13 is applied between first thimble 12 and second thimble 17.The lower end of first piston 8 has first plug 22, has an intersegmental crack between this first plug 22 and the 3rd thimble 28, and the lower end of second piston 9 has second plug 18, has an intersegmental crack between this second plug 18 and second thimble 17.
Have air storing cavity 35 on the cylinder block 3, and have inlet hole 32 and the exhaust port 33 that is communicated with this air storing cavity 35 on the cylinder block 3, and the inlet hole 32 of cylinder block 3 also is connected with first piston cavity 31.Have pressure gauge connection 34 on cylinder block 3, pressure gauge 4 is installed in this pressure gauge connection 34, is used to monitor the gas pressure in the air storing cavity 35, thereby makes further adjusting.And superpressure danger takes place when preventing the too high derivation gas transmission of gas pressure in the air storing cavity 35, in the embodiment shown in fig. 1, the relief valve connection 36 that has relief hole 37 on the cylinder block 3 and be connected with this relief hole 37, safety valve 5 is installed in relief valve connection 36, and safety valve 5 is opened the gas that can make in the air storing cavity 35 and is discharged from relief hole 37.Safety valve 5 is mainly by spool 51, spring 52, gland 53 and shake hands 54 to form.Gland 53 and handle 54 are positioned at cylinder block 3 outsides, and spool 51 passes gland 53, and spring 52 is between spool 51 and the gland 53.When the gas in the cylinder block 3 acts on pressure on the spool 51 when having surpassed spring 52 and acting on the pressure of spool 51, spool 51 is just to cylinder block 3 movement outside, open and relief hole 37 when being connected with air storing cavity 35 to safety valve 5, the gases in the cylinder block 3 will be discharged from relief hole 37 immediately.
The working procedure of the foregoing description is:
With reference to Fig. 1, air cylinder 6 is inserted second connecting sleeves 1 and screw, be located at the gas valve core 72 that first thimble 12 on second connecting sleeve 1 will be located on the air cylinder 6 simultaneously and back down this moment, makes that the gases in the air cylinder 6 enter the second throttling inlet hole 13 that is located on second connecting sleeve 1 by the T shape transfer port 77 that is located on the gas valve core 72.
After entering the gas process throttling for the first time step-down of the second throttling inlet hole 13, the radially vent by the 2nd T shape piston 9 enters axial throttle orifice and is axially carrying out the step-down second time in the throttle orifice again.Through the gas of step-down for the second time by first connecting sleeve 2 the first throttle intake interface enter first throttle inlet hole 23, the gas that enters first throttle inlet hole 23 through throttling step-down for the third time after again by carrying out the 4th step-down to preceding described similar step-down process, enter in the air storing cavity 35 of cylinder block 3 through the gas of the 4th step-down intake interface, then by exhaust port 33 outputs by cylinder block 3.
Act on the pressure on the T shape piston 8 greater than first pressure regulating spring 29 and act on pressure on the 2nd T shape piston 9 when acting on pressure on the 2nd T shape piston 9 greater than second pressure regulating spring 19 when the gas in the air storing cavity 35 acts on pressure on the T shape piston 8, the one T shape piston 8 and the 2nd T shape piston 9 can move downward, be located at first plug 22 of a T shape piston 8 lower ends and be located at the gap between the 3rd thimble 28 on first connecting sleeve 2 and be located at second plug 18 of the 2nd T shape piston 1 lower end and the gap that is located between second thimble 17 on second connecting sleeve 1 can reduce gradually, cause charge flow rate to reduce gradually, output pressure then begins to descend, equal first pressure regulating spring 29 and act on the pressure on the T shape piston 8 and act on pressure on the 2nd T shape piston 9 when equaling second pressure regulating spring 19 and acting on pressure on the 2nd T shape piston 9 until act on pressure on the T shape piston 8 when the gas in the air storing cavity 35, the one T shape piston 8 and the 2nd T shape piston 9 can stop to move downward, and this moment, flow and pressure will keep constant.
Act on the pressure on the T shape piston 8 less than first pressure regulating spring 29 and act on pressure on the 2nd T shape piston 9 when acting on pressure on the 2nd T shape piston 9 less than second pressure regulating spring 19 when the gas in the air storing cavity 35 acts on pressure on the T shape piston 8, the one T shape piston 8 and the 2nd T shape piston 9 can move upward, be located at first plug 22 of a T shape piston 8 lower ends and be located at the gap between the 3rd thimble 28 on first connecting sleeve 2 and be located at second plug 18 of the 2nd T shape piston 9 lower ends and the gap that is located between second thimble 17 on second connecting sleeve 1 can increase gradually, cause charge flow rate to increase gradually, output pressure then begins to rise; Equal first pressure regulating spring 29 and act on the pressure on the T shape piston 8 and act on pressure on the 2nd T shape piston 9 when equaling second pressure regulating spring 19 and acting on pressure on the 2nd T shape piston 9 when the gas in the air storing cavity 35 acts on pressure on the T shape piston 8, the one T shape piston 8 and the 2nd T shape piston 9 promptly stop to move upward, and this moment, flow and pressure kept constant once more.
Certainly, above-mentioned pressure that pressure regulating spring provides and the unbalance T of the making shape piston between the gas pressure in the air storing cavity 35 of passing through moves just at the output pressure fine adjustment during deviation slightly, and when practical application, change the air pressure that to export at the difference equipment of being bullied if desired, then need to regulate in the following manner.
Regulate the gas pressure of output if desired, rotary cylinder body 3 and select second connecting sleeve 1 forward or backwards forward or backwards, be located at the T shape piston 8 between the cylinder block 3 and first connecting sleeve 2 this moment be located at first connecting sleeve 2 with second connecting sleeve 1 between the 2nd T shape piston 9 understand generation motions downward or upward, when a T shape piston 8 and the 2nd T shape piston 9 move downward, first pressure regulating spring 29 and second pressure regulating spring 19 just are compressed, and because dwindling of gap between first plug 22 and the 3rd thimble 28 and the gap between second plug 18 and second thimble 17 makes the delivery pressure of gas descend; Otherwise when a T shape piston 8 and the 2nd T shape piston 9 moved upward, first pressure regulating spring 29 and second pressure regulating spring 19 were released, and gas output pressure will rise.
When a T shape piston 8 or the 2nd T shape piston 9 because of mechanical failure takes place can not be with the motion of gas pressure the time, this moment, air storing cavity 35 interior gas pressures will rise, when long to the time on the gas pressure greater than the operating pressure of safety valve 5, be located at spool 51 on the safety valve 5 and will move and safety valve 5 is opened, the gases in the air storing cavity 35 are discharged from relief hole 37 immediately.And the gas pressure in air storing cavity 35 is than the pressure of spring 52 hour, and spool 51 will be in the gas circuit of cutting off under spring 52 active forces between relief hole 37 and the air storing cavity 35.And the handle 54 that is arranged on cylinder block 3 outsides is connected with spool 51, can shake hands 54 safety valve 5 to be opened or closed by manual operation.
When first connecting sleeve 2 is made of several external members with cylinder body that communicate, be provided with a plurality of T shape pistons between external member and the external member, polyphone gets up to form a multistage low-pressure modulating valve, the pressure difference of the input and output gas of each stage pressure controlling device just can reduce greatly, just the regulation range of each stage pressure reduces greatly, every increase first class pressure controlling device has also just increased the multiple throttling of one-level simultaneously, make that the delivery pressure of whole pressure regulator is more steady, pressure is regulated more convenient, more is applicable to the accurate control of the delivery pressure of small-flow gas.
More than specific embodiment of the present invention is illustrated in conjunction with diagram; but protection content of the present invention is not only limited to above embodiment, in affiliated technical field of the present invention, and the common knowledge of a GPRS; just can in its technology main idea scope, carry out diversified change.
Claims (10)
1. multistage low pressure modulating valve that is used for small-flow gas, it is characterized in that: it comprises
Cylinder block has air storing cavity in the described cylinder block, and described cylinder block is provided with inlet hole and the interface of giving vent to anger, and the described inlet hole and the interface of giving vent to anger are communicated to air storing cavity respectively;
First connecting sleeve, described first connecting sleeve connects on screw-thread fit ground mutually with cylinder block, the first throttle inlet hole that described first connecting sleeve has first intake interface, is connected with described first intake interface forms the first piston chamber that is connected with both respectively between the inlet hole of the first throttle inlet hole of first connecting sleeve and cylinder block;
Second connecting sleeve, described second connecting sleeve connects on screw-thread fit ground mutually with first connecting sleeve, described second connecting sleeve has second intake interface that is used for being connected with gas storage equipment, the second throttling inlet hole that is connected with described second intake interface, forms second piston cavity that is connected with both respectively between the first throttle inlet hole of the second throttling inlet hole of second connecting sleeve and first connecting sleeve;
First piston is arranged within the described first piston chamber, and it has first vent and first segment discharge orifice, is used for the throttling inlet hole from first connecting sleeve is entered the inlet hole that gas in the first piston chamber exports to cylinder block;
Second piston is arranged within described second piston cavity, and it has second vent and second throttle orifice, is used for the second throttling inlet hole from second connecting sleeve is entered the first throttle inlet hole that gas in second piston cavity exports to first connecting sleeve.
2. multistage low pressure modulating valve according to claim 1, it is characterized in that: it also comprises pressure regulating spring, described pressure regulating spring is used for providing an active force to piston, make piston have the trend that the inlet hole towards cylinder block moves, described pressure regulating spring comprise be arranged on first pressure regulating spring between the cylinder block and first connecting sleeve and be arranged on first connecting sleeve and second connecting sleeve between second pressure regulating spring.
3. multistage low pressure modulating valve according to claim 1, it is characterized in that: described first piston comprises the first piston and first small piston, the diameter of first piston is greater than the diameter of first small piston, described first piston chamber correspondingly comprises the first piston cavity and the first small piston chamber, described first piston is arranged in the cylinder block, described first small piston is arranged in first connecting sleeve, described first pressure regulating spring is enclosed within on first small piston, first pressure regulating spring provides a pressure for first piston, described first connecting sleeve is provided with first spring groove, and described first pressure regulating spring embeds in this first spring groove.
4. multistage low pressure modulating valve according to claim 1, it is characterized in that: described second piston comprises the second largest piston and second small piston, the diameter of second largest piston is greater than the diameter of second small piston, described second piston cavity correspondingly comprises the second largest piston cavity and the second small piston chamber, described second largest piston is arranged in first connecting sleeve, described second small piston is arranged in second connecting sleeve, described second pressure regulating spring is enclosed within on second small piston, second pressure regulating spring provides a pressure for second largest piston, described second connecting sleeve is provided with second spring groove, and described second pressure regulating spring embeds in this second spring groove.
5. multistage low pressure modulating valve according to claim 1, it is characterized in that: described first piston have first plug with the adjoining end of the first throttle inlet hole of first connecting sleeve, between first connecting sleeve relative and first plug, one section space that is used to enter air-flow is arranged with first plug.
6. multistage low pressure modulating valve according to claim 1, it is characterized in that: described second piston have second plug with the adjoining end of the second throttling inlet hole of second connecting sleeve, between second connecting sleeve relative and second plug, one section space that is used to enter air-flow is arranged with second plug.
7. multistage low pressure modulating valve according to claim 1, it is characterized in that: first vent on the described first piston is along the radially extension of first piston, first vent radially is communicated to the first piston chamber, first segment discharge orifice on the described first piston is along the axial connection of piston, and axial first segment discharge orifice is connected with first vent.
8. multistage low pressure modulating valve according to claim 1, it is characterized in that: second vent on described second piston is along the radially extension of second piston, second vent radially is communicated to second piston cavity, second throttle orifice on described second piston is along the axial connection of piston, and the second axial throttle orifice is connected with second vent.
9. according to the described multistage low pressure modulating valve of one of claim 1-8, it is characterized in that: have relief valve connection that is communicated with air storing cavity and the relief hole that is used to discharge gas that is connected with this relief valve connection on the described cylinder block, in this relief valve connection, safety valve is installed, is used for the gas circuit between air storing cavity and the relief hole is cut off or opened.
10. multistage low pressure modulating valve according to claim 8, it is characterized in that: described safety valve comprises spool, be enclosed within on the described spool and to spool provide active force spring, be fixed on the gland in the described relief valve connection, described spool passes gland and is inserted in movably in the relief valve connection, and described spring is arranged between spool and the gland.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206929184U CN201916494U (en) | 2010-12-31 | 2010-12-31 | Multi-step low-pressure regulating valve for small-flow gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206929184U CN201916494U (en) | 2010-12-31 | 2010-12-31 | Multi-step low-pressure regulating valve for small-flow gas |
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| Publication Number | Publication Date |
|---|---|
| CN201916494U true CN201916494U (en) | 2011-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206929184U Expired - Lifetime CN201916494U (en) | 2010-12-31 | 2010-12-31 | Multi-step low-pressure regulating valve for small-flow gas |
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| CN (1) | CN201916494U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104094025A (en) * | 2012-03-27 | 2014-10-08 | Ebm-帕普斯特兰茨胡特有限公司 | Gas control valve |
| CN110425295A (en) * | 2019-08-11 | 2019-11-08 | 永嘉企达知识产权咨询有限公司 | It is a kind of directly to act on double seat regulating valve |
| TWI724904B (en) * | 2020-05-18 | 2021-04-11 | 邦查工業股份有限公司 | Pressure regulator and gas storage device with the same |
| CN113063009A (en) * | 2021-06-04 | 2021-07-02 | 山东钛融安全技术服务有限公司 | Novel explosion-proof discharge valve of explosion-proof control cabinet |
| CN113701051A (en) * | 2020-05-20 | 2021-11-26 | 邦查工业股份有限公司 | Pressure regulating device and gas storage equipment with same |
-
2010
- 2010-12-31 CN CN2010206929184U patent/CN201916494U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104094025A (en) * | 2012-03-27 | 2014-10-08 | Ebm-帕普斯特兰茨胡特有限公司 | Gas control valve |
| CN104094025B (en) * | 2012-03-27 | 2016-10-19 | Ebm-帕普斯特兰茨胡特有限公司 | Pneumatic valve |
| CN110425295A (en) * | 2019-08-11 | 2019-11-08 | 永嘉企达知识产权咨询有限公司 | It is a kind of directly to act on double seat regulating valve |
| CN110425295B (en) * | 2019-08-11 | 2020-11-20 | 永嘉企达知识产权咨询有限公司 | Direct-acting double-seat type regulating valve |
| TWI724904B (en) * | 2020-05-18 | 2021-04-11 | 邦查工業股份有限公司 | Pressure regulator and gas storage device with the same |
| CN113701051A (en) * | 2020-05-20 | 2021-11-26 | 邦查工业股份有限公司 | Pressure regulating device and gas storage equipment with same |
| CN113701051B (en) * | 2020-05-20 | 2023-02-17 | 邦查工业股份有限公司 | Pressure regulating device and gas storage equipment with same |
| CN113063009A (en) * | 2021-06-04 | 2021-07-02 | 山东钛融安全技术服务有限公司 | Novel explosion-proof discharge valve of explosion-proof control cabinet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Suzhou Huaai Electronics Co., Ltd. Assignor: Ding Huimin Contract record no.: 2012320010003 Denomination of utility model: Multi-step low-pressure regulating valve for small-flow gas Granted publication date: 20110803 License type: Exclusive License Record date: 20120206 |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110803 |