TWM644491U - Pneumatic shut-off valve - Google Patents

Abstract

A pneumatic shut-off valve that may include a valve body, a single-acting nipple and an internal check valve, in various embodiments, the pneumatic shut-off valve may be connected to a positioner, a cylinder, or Combined to control the operation of a fluid sequence control valve, in operation, the pneumatic shut-off valve loses sufficient pressure or communication from the main air supply to the cylinder, stored charge from an air reservoir or an external air reservoir Acts on compressed air to place the cylinder in the preset fail-safe position.

Description

Pneumatic shut-off valve

The present invention refers to a pneumatic valve device, especially a pneumatic shut-off valve communicating and/or operatively engaging a single-acting or double-acting cylinder. Pneumatic shut-off valves can be used with valve positioners to utilize an air reservoir for more accurate opening angles to cylinders, higher torque output, and failsafe cylinders to preset failsafe positions.

Press, control valves (eg, rotary valves, linear valves, etc.) are used to control the flow of process fluids, control valves have flow control members (eg, balls, discs, plugs, etc.) Usually includes a pneumatic cylinder and a positioner to automate the operation of the control valve, and the operation of the pneumatic cylinder can be controlled through the positioner, the positioner supplies air pressure to each side of the pneumatic cylinder relative to the input signal, which in turn provides the force to fully open throttling the flow control member between the closed position and the fully closed position.

Usually control valves are provided with a fail safe system. During an emergency, when the air supply is interrupted or lost, a pneumatic cylinder causes the control valve to move to a fully closed or fully open position. Known fail safe systems for pneumatic cylinders include mechanical spring return systems Or an air-based fail-safe system.

Air-based fail-safe systems are often implemented with double-acting cylinders paired with air reservoirs. Shutoff valves will override when there is a distribution or loss of air supply in a typical installation The positioner is in fluid communication with the cylinder and provides fluid communication between the first air volume chamber and the air storage chamber. The shut-off valve also facilitates fluid communication between the second plenum and the atmosphere, causing the cylinder to move toward the second plenum. This sets the valve controlled by the cylinder in either a fully closed failsafe position or a fully open failsafe position.

However, unlike mechanical spring return systems, which are manufactured integrally with the cylinder, air-based fail-safe systems are often specially configured and involve complex layout and piping to combine into necessary and separate components such as shut-off valves, switches Valves, check valves, air reservoirs, various fittings and additional piping to incorporate the part. These systems have therefore significantly increased the size, complexity and cost of many pneumatic cylinder fail-safe systems. In view of this, the creators have been engaged in the manufacturing, development and design of related products for many years. Aiming at the above goals, detailed design and careful evaluation Finally, finally get a truly practical creation.

The invention generally relates to an improved pneumatic shut-off valve with a plurality of holes, the pneumatic shut-off valve has a valve body including a first vent slot, a first air chamber hole, an acceleration vent hole, The input air hole, a second air chamber hole, an air chamber air storage hole and an additional air inlet hole and an air outlet hole provide the first air vent groove, the first air chamber hole, the accelerated deflation on the side of the valve body Holes, the input air hole, the second air chamber hole, the air chamber air storage hole, the air inlet hole and the air outlet hole, the first air slot and the input air hole receive air supply from a positioner, and the accelerated air release hole to The atmosphere is deflated.

The valve body of the present invention has a spool chamber, a first pipeline and a second pipeline, the spool chamber and the internal air path can be arranged along the axis of the valve body, the first pipeline and the The second line is collinear and alternatively, the spool chamber and internal air path can be in other linear or nonlinear orientation configurations. The first conduit provides fluid communication between the air inlet connected to a main air supply and the air outlet connected to a second air outlet of the positioner. The second line provides fluid communication to the reservoir of the air chamber, and an internal check valve is provided between the first line and the second line so that the air pressure in the first line is greater than the air pressure in the first line The presence of air pressure in the second line allows fluid communication between the first line and the second line.

A spool element and a spring against the spool element are loaded in the spool chamber, and a switch plate is arranged on one side of the valve body, and the switch plate includes a single-action connecting pipe to allow the spool chamber and The fluid communication between the inlet holes.

In one embodiment, when the spring in the spool element is in the compressed first state, the first vent groove is in fluid communication with the first air chamber hole, and the first air chamber hole and the acceleration vent hole are in fluid communication. is blocked, the input air hole is in fluid communication with the second air chamber hole, and the gap between the second air chamber hole and the air storage hole of the air chamber is blocked. When the spring in the spool member is in the decompressed second state, the first vent slot, the first air chamber hole and the accelerated bleeder hole are in fluid communication, between the input air hole and the second air chamber hole is blocked, and the second air chamber hole is in fluid communication with the air chamber storage hole.

In another embodiment, when the spring in the spool element is in the compressed first state, the first vent groove is in fluid communication with the first air chamber hole, and the first air chamber hole is in fluid communication with the acceleration vent hole. The space is blocked, the input air hole is in fluid communication with the second air chamber hole, and the space between the second air chamber hole and the air storage hole is blocked. When the spring in the spool element is in the decompressed second state, the first vent groove and the first air chamber hole are blocked, the first air chamber hole is in fluid communication with the accelerated air release hole, the The gap between the input air hole and the hole of the second air chamber is blocked, and the second air chamber A hole is in fluid communication with the plenum reservoir.

In another embodiment, when the spring in the spool element is in the compressed first state, the first vent groove is in fluid communication with the first air chamber hole, and the first air chamber hole is in fluid communication with the acceleration vent hole. The space is blocked, the input air hole is in fluid communication with the second air chamber hole, and the space between the second air chamber hole and the air storage hole is blocked. When the spring in the spool member is in the decompressed second state, the first vent groove, the first air chamber hole and the accelerated bleed hole are in fluid communication, the input air hole and the second air chamber hole are in fluid communication connected.

In another embodiment, when the spring in the spool element is in the compressed first state, the first vent groove is in fluid communication with the first air chamber hole, and the first air chamber hole is in fluid communication with the acceleration vent hole. The space is blocked, the input air hole is in fluid communication with the second air chamber hole, and the space between the second air chamber hole and the air storage hole is blocked. When the spring in the spool element is in the decompressed second state, the first vent slot is blocked between the first air chamber hole, the first air chamber hole is in fluid communication with the accelerated vent hole, The input air aperture, the second air chamber aperture and the air chamber storage aperture are in fluid communication.

The foregoing and other objects, features and advantages of the disclosed subject matter will become apparent from the following detailed description taken in conjunction with the accompanying drawings.

1: Pneumatic cut-off valve

10: valve body

11: Spool chamber

12: Spool element

121: Spool

1211: spool notch

1212: First spool notch

1213: Second spool notch

1214: first interval

1215: second interval

122: Spool casing

123: seal

124: ring groove

1241: the first ring groove

1242: Second ring groove

1243: The third ring groove

1244: Fourth Ring Groove

1245: fifth ring groove

1246: Sixth Ring Groove

125: spring

13: The first ventilation slot

14: Second ventilation slot

15: The first pipeline

151: Internal check valve

16: Second pipeline

171: Air intake hole

172: Vent

173: air storage hole

1731: exhaust hole

174: The first air chamber hole

175: Second air chamber hole

176: air inlet

177: vent hole

178: External air chamber hole

1781: External gas reservoir

1782: plug

18: Bottom plate

19: Discharge channel

191: Acceleration Vent

20: switch plate

21: Single Action Takeover

22: Piston

23: Piston

30: External three-way valve

31: Three-way channel

32: Input stomata

33: External three-way valve air intake hole

34: Outlet hole of external three-way valve

41: First pipeline

42: Second pipeline

50: Cylinder

501: the first air chamber

502: the second air chamber

503: gas storage chamber

51:IB hole position

52: IC hole position

53: ID hole position

54: Actuator

55: gear shaft

60: Main air supply source

70: Locator

71: The first air outlet

72: Second air outlet

[Fig. 1] is a three-dimensional view of the pneumatic shut-off valve of this creation.

[Fig. 2] is the three-dimensional exploded view of the pneumatic shut-off valve of this creation.

〔Fig. 3〕 is the exploded perspective view of the parts of the pneumatic shut-off valve of this creation and its internal path.

[Figure 4] It is an exploded perspective view of the components of the pneumatic shut-off valve and its internal path from another angle picture.

〔Figure 5〕is a three-dimensional view of the combined air cylinder, main air supply source and positioner of this creation.

[Fig. 6] is the three-dimensional perspective view of the cylinder of this creation.

[Fig. 7] is the three-dimensional view of the pneumatic shut-off valve of this creation.

〔Figure 8〕is a perspective view of the combined air cylinder, main air supply source, external air reservoir and positioner for this creation.

[FIG. 9] is a sectional view taken along line 7-7 of [FIG. 1] to show the pneumatic shut-off valve in a fail-safe configuration.

[Fig. 10] is a sectional view of [Fig. 6] line 6-6, to show a schematic diagram of a pneumatic shut-off valve in a fail-safe configuration.

[FIG. 11] is a sectional view taken along line 7-7 of [FIG. 1] to show the pneumatic shut-off valve in its normal operating configuration.

[FIG. 12] is a sectional view taken along line 6-6 of [FIG. 6] to show the pneumatic shut-off valve in its normal operating configuration.

[Fig. 13] omits the perspective view of the external three-way valve and the first pipeline for this creation.

[Fig. 14] is a front perspective view of [Fig. 13].

[Fig. 15] is a rear perspective view of [Fig. 13].

[Fig. 16] is a sectional view of section line 8-8 of [Fig. 13], together with [Fig. 14] to [Fig. 15], to show the pneumatic shut-off valve in fail-safe configuration.

[Fig. 17] is a cross-sectional view of section line 9-9 of [Fig. 13], together with [Fig. 14] to [Fig. 15], to show the pneumatic shut-off valve in fail-safe configuration.

[Fig. 18] is a cross-sectional view of the 6-6 section line of [Fig. 6], and is matched with [Fig. 13] to [Fig. 15] to show a schematic diagram of a pneumatic shut-off valve in a fail-safe configuration.

[Figure 19] is a cross-sectional view of the 8-8 section line of [Figure 13], and it is matched with [Figure 14] to [Figure 15] to show shows the pneumatic shut-off valve in its normal operating configuration.

[Fig. 20] is a cross-sectional view of section line 9-9 of [Fig. 13], together with [Fig. 14] to [Fig. 15], to show the pneumatic shut-off valve in normal operation configuration.

[FIG. 21] is a sectional view taken along line 6-6 of [FIG. 6] to show the pneumatic shut-off valve in a normal operating configuration.

[Fig. 22] is a front perspective view of [Fig. 13] omitting the air inlet.

[Fig. 23] is a rear perspective view of [Fig. 13] omitting the air inlet.

[Fig. 24] is a cross-sectional view of section line 8-8 of [Fig. 13], together with [Fig. 22] to [Fig. 23], to show the pneumatic shut-off valve in fail-safe configuration.

[Fig. 25] is a cross-sectional view of section line 9-9 of [Fig. 13], together with [Fig. 22] to [Fig. 23], to show the pneumatic shut-off valve in fail-safe configuration.

[Fig. 26] is a cross-sectional view of section line 6-6 of [Fig. 6], together with [Fig. 22] to [Fig. 23], to show the pneumatic shut-off valve in fail-safe configuration.

[Fig. 27] is a sectional view of section line 8-8 of [Fig. 13], together with [Fig. 22] to [Fig. 23], to show the pneumatic shut-off valve in normal operating configuration.

[Fig. 28] is a cross-sectional view of section line 9-9 of [Fig. 13], together with [Fig. 22] to [Fig. 23], to show the pneumatic shut-off valve in normal operation configuration.

[FIG. 29] is a front perspective view of [FIG. 13] to show that a first vent groove is formed on the side of the valve body.

[FIG. 30] is a rear perspective view of [FIG. 13] to show that a first vent groove is formed on the side of the valve body.

[Fig. 31] is a cross-sectional view of section line 8-8 of [Fig. 13], together with [Fig. 29] to [Fig. 30], to show the pneumatic shut-off valve in fail-safe configuration.

[Fig. 32] is a cross-sectional view of section line 8-8 of [Fig. 13], together with [Fig. 29] to [Fig. 30], to show the pneumatic shut-off valve in fail-safe configuration.

[Figure 33] is a cross-sectional view of the 8-8 section line of [Figure 13], and it is matched with [Figure 29] to [Figure 30] to show shows the pneumatic shut-off valve in its normal operating configuration.

[Fig. 34] is a cross-sectional view of section line 9-9 of [Fig. 13], together with [Fig. 29] to [Fig. 30], to show the pneumatic shut-off valve in normal operation configuration.

〔Fig. 35〕 is the combination diagram of the connection and communication of each hole of the pneumatic shut-off valve of this creation.

The present creation relates to a pneumatic shut-off valve 1 with a plurality of holes, which can be used alone or in combination with a positioner 70 with a cylinder 50, when the air supply is lost or when the supply to the pneumatic shut-off valve 1 is used. A failure of air pressure to shut off valve 1 below a minimum threshold places it in a fail-safe configuration where the minimum threshold for the air supply is in the range 0-150 psi. The minimum threshold can be selected or changed by the user of the disclosed device and system. Additionally, the pneumatic shut-off valve 1 can include an external three-way valve 30 .

Referring to Fig. 1, Fig. 2, Fig. 7, Fig. 13, Fig. 22, Fig. 23 and Fig. 29 and Fig. 30, the pneumatic shut-off valve 1 includes a valve body 10, a bottom plate 18, a switch plate 20 and the external tee valve 30 , the valve body 10 can be connected to the switch plate 20 and the external three-way valve 30 .

As shown in Figures 2 to 5, the valve body 10 is provided with a first pipeline 15, a second pipeline 16, a first three-way passage and a second three-way passage, the first pipeline 15 It communicates with an air inlet 171 on the side of the valve body 10, the first pipeline 15 also communicates with a main air supply source 60, and the second pipeline 16 communicates with the first pipeline 15, wherein the The first pipeline 15 communicates with the second pipeline 16 through an internal check valve 151. When the air pressure in the first pipeline 15 is greater than that of the second pipeline 16, the internal check valve 151 To allow unidirectional flow between the first pipeline 15 and the second pipeline 16, in this invention, the internal check valve 151 can be arranged in the first pipeline 15, the second pipeline 16, Or set between the first pipeline 15 and the second pipeline 16, when the air inlet 171 is provided When supplying air, the first three-way passage and the second three-way passage adopt a normal operation configuration, and in addition, the air supply received by the first three-way passage and the second three-way passage at the air inlet 171 is reduced When it is lower than the minimum threshold value, a fail-safe configuration will be adopted, wherein the first three-way passage can be used for a first vent groove 13 on the top of the valve body 10 and a first air chamber hole on the side of the valve body 10 174 and an accelerated vent hole 191 communicate with each other, and the second three-way passage can be used for an input air hole 32 of the external three-way valve 30 and a second air chamber hole 175 and an air chamber air storage hole on the side of the valve body 10 173 form communication with each other, the valve body 10 is also provided with a valve core chamber 11 and a second vent groove 14 near the bottom of the valve body 10, in this embodiment, the first vent groove 13 and the second gas vent groove The chamber hole 175 is axially aligned, but in other embodiments, the first vent groove 13 and the second air chamber hole 175 are not axially aligned, and a valve core element is penetrated in the valve core chamber 11 12. The spool element 12 includes a spool 121 and a spool sleeve 122, and a spring 125 disposed at the bottom portion of the spool element.

Wherein, the side of the valve body 10 has a plurality of additional holes, including the air inlet hole 171, an air outlet hole 172, the air chamber air storage hole 173, an exhaust hole 1731, the first air chamber hole 174, the second air chamber hole Two air chamber holes 175, an air inlet hole 176, an air release hole 177, an external air chamber hole 178 and the acceleration air release hole 191, the first vent groove 13 is fluidly connected to the first air chamber hole 174, and the second air chamber hole 174 The two vent grooves 14 are fluidly connected to the second air chamber hole 175, the first pipeline 15 is fluidly connected to the air inlet 171, and can be connected to the air outlet 172, and the second pipeline 16 is connected to the air chamber. The air storage hole 173, the external air chamber hole 178 and the vent hole 1731 are in fluid communication, the vent hole 1731 is connected to the valve core chamber 11, and the valve core chamber 11 is connected to the inlet of the valve body 10 at the same time. Air hole 176, the vent hole 177, the accelerated vent hole 191 and a vent passage 19, the vent passage 19 fluidly connects the first vent groove 13 and the spool chamber 11, the end of the vent passage 19 is provided with a piston 22, as shown in Figure 11 and Figure 19, to prevent the air from flowing out through the valve body 10, in addition, it is expected that the inner An internal check valve 151 is placed in the internal air path formed by the first line 15 and the second line 16 above or in front of any of the following: The exhaust hole 1731, the air chamber air storage hole 173 or the external air chamber hole 178, alternatively, it is desirable to place the internal check valve 151 between the first pipeline 15 and the second pipeline 16 In the internal air path formed below or after the air inlet hole 171, although the air outlet hole 172 exists in the description, in other embodiments, the pneumatic shut-off valve 1 omits the air outlet hole 172, and the pneumatic shut-off valve 1 omits the air outlet hole 172. The shut-off valve 1 is not in fluid communication with the hole of the locator 70, but a T-fitting is installed between the inlet hole 171 and the main air supply 60, the remaining holes on the T-fitting being in contact with the locator 70. The pores are in fluid communication.

Wherein, the part of the spool 121 is concave to form a plurality of spool notches 1211, and a first space 1214 is formed between two adjacent spool notches 1211, the spool sleeve 122 Joined to the top of the spool 121, the spool 121 also includes a plurality of lip-shaped seals 123, the plurality of lip-shaped seals 123 can be O-rings or other elastic structures, the spool 121 also includes a plurality of ring groove 124, and a second interval 1215 is formed between two adjacent ring grooves 124, and the plurality of spool recesses 1211 include a first spool recess 1212 and a second spool recess 1213. , as shown in Figure 2, the plurality of annular grooves 124 include a first annular groove 1241, a second annular groove 1242, a third annular groove 1243, a fourth annular groove 1244, a fifth annular groove 1245 and a a sixth annular groove 1246, the plurality of annular grooves 124 defining an opening in the spool 121 that permits fluid communication through a portion of the spool 121, wherein each of the annular grooves 124 is separated by each of the seals 123, At least one of the plurality of annular grooves 124 is in communication with at least one of the first vent groove 13 , the first air chamber hole 174 , the accelerated air release hole 191 or the air chamber air storage hole 173 , and The spool 121 translates within the spool sleeve 122 in response to air pressure at the air supply, wherein when the spool 121 translates within the spool sleeve 122 in response to a decrease in air pressure, the pneumatic switch Shut off valve 1 series will adopt Take the fail-safe configuration, and when the spool 121 translates in the spool sleeve 122 due to the increase or return of air pressure, the pneumatic shut-off valve 1 adopts the normal configuration.

In operation, the first spool notch 1212 is translatable between the first annular groove 1241 , the second annular groove 1242 and the third annular groove 1243 , thereby allowing the first annular groove 1241 to communicate with the second annular groove 1241 . The fluid communication between the ring grooves 1242, or the fluid communication between the second ring groove 1242 and the third ring groove 1243, the same second spool recess 1213 in the fourth ring groove 1244, the first ring groove 1243 Displacement between the fifth annular groove 1245 and the sixth annular groove 1246 to allow fluid communication between the fourth annular groove 1244 and the fifth annular groove 1245, or between the fifth annular groove 1245 and the sixth annular groove Fluid communication between 1246.

In this embodiment, the valve body 10 includes the external air chamber hole 178 on the side, the external air chamber hole 178 can be blocked by a plug 1782 when not in use, the external air chamber hole 178 is fluidly connected to the The second pipeline 16, the external air chamber hole 178 can be connected to an external air reservoir 1781, as shown in Figures 8 and 10, the external air reservoir 1781 is combined with the valve body 10 or with the cylinder 50 or the on-board air storage combined with the locator 70, the external air storage 1781 communicates with the air storage hole 173 of the air chamber.

As shown in FIG. 3 and FIG. 4 , a single-action connecting pipe 21 is disposed inside the switch plate 20 , and the end of the single-acting connecting pipe 21 allows fluid communication between the first pipeline 15 and the spool chamber 11 .

The external three-way valve 30 has a three-way passage 31 inside, and the ends of the three-way passage 31 are respectively equipped with the input air hole 32, an external three-way valve air inlet 33 and an external three-way valve air outlet 34, The external three-way valve air inlet 33 is connected with the second ventilation groove 14 by a first pipeline 41, and the external three-way valve air outlet 34 is connected with the air inlet 176 by a second pipeline 42 , additionally, as seen in FIGS. 14 and 22, the vent hole 1731 may be blocked by a piston 23, The air cannot escape from the valve body 10, and the first vent groove 13, the first air chamber hole 174, the accelerated air release hole 191, the input air hole 32, the second air chamber hole 175 and the air chamber air storage hole 173 terminates directly or indirectly to the spool chamber 11.

As shown in Figure 5, the perspective view of the pneumatic shut-off valve 1 combining the cylinder 50, the main air supply source 60 and the positioner 70, in this embodiment, the external three-way valve 30 through the first pipe 41 and the second pipeline 42 are combined with the valve body 10. In this embodiment, the cylinder 50 can include a cylinder IB hole 51, an IC hole 52 and an ID hole 53, and the air chamber air storage hole 173 Fluidly connected to the IB hole 51, the first air chamber hole 174 is fluidly connected to the IC hole 52, and the second air chamber hole 175 is fluidly connected to the ID hole 53, in other embodiments , the cylinder 50 may not include the IB hole 51, in this embodiment, the air chamber air storage hole 173 may be blocked by the plug 1782, and the external air storage 1781 may be connected to the external air chamber hole through a pipe 178, therefore, the pneumatic shut-off valve 1 is suitable for use with a wide variety of cylinders, including but limited to rotary cylinders, linear cylinders, cylinders with two or more piston chambers, cylinders with reservoirs, and cylinders without reservoirs Cylinders of air chambers, the pneumatic shut-off valve 1 is likewise suitable for use with a wide variety of positioners, and additionally, the pneumatic shut-off valve 1 can be incorporated into systems having at least one existing shut-off valve.

Referring to Fig. 5, Fig. 6, Fig. 10, Fig. 12, Fig. 18, Fig. 21 and Fig. 26, an example of the cylinder 50 for operating the control valve is shown, the cylinder 50 has at least one actuator 54, a gear Shaft 55, a first air chamber 501, a second air chamber 502 and an air chamber 503, as before the pneumatic shut-off valve 1 can be used with single-acting or double-acting cylinders, including those without air chambers cylinder.

In this embodiment, supplying air to the first air chamber 501 causes the actuating member 54 to move away from the initial set point, while supplying air to the second air chamber 502 causes the actuating member 54 to move toward the initial set point , the actuator 54 can communicate with the gear shaft 55, and the gear shaft 55 One step is in operable communication with the valve body 10. In many cylinders, the air storage chamber 503, the first air chamber 501 and the second air chamber 502 are independent of each other, and the air storage chamber 503 is fluidly connected to the IB The hole 51 , the first air chamber 501 is fluidly connected to the IC hole 52 , and the second air chamber 502 is fluidly connected to the ID hole 53 .

The pneumatic shut-off valve 1 can adopt a variety of operating configurations to achieve the desired fail-safe condition of the associated control valve when the fluid flow control system employing the pneumatic shut-off valve 1 experiences a loss of supply from the main air supply source 60 or from These operating configurations can be implemented with the air supply to the pneumatic shut-off valve 1 delivered by the main air supply source 60 via one or more of the cylinder 50 or the positioner 70 .

Referring to FIGS. 1 to 5 and FIGS. 7 to 12 , when there is not enough air pressure supplied from the main air supply source 60 to the spool chamber 11 via the single-acting adapter 21 to overcome the spring 125 , the pneumatic The shut-off valve 1 assumes this operative configuration, as shown in Figures 2, 9 and 10, whereby the spring 125 urges the spool 121 upwards, thereby positioning the first spool recess 1212 to allow the second fluid communication between a ring groove 1241 and the second ring groove 1242, likewise the second spool recess 1213 is positioned to allow fluid communication between the fourth ring groove 1244 and the fifth ring groove 1245, The first vent groove 13 of the pneumatic shut-off valve 1 is in fluid communication with one of the first air outlet holes 71 of the positioner 70, and the first air chamber hole 174 is in fluid communication with the IC hole 52, and the acceleration vent hole 191 It is in fluid communication with the atmosphere, and the input air hole 32 is in fluid communication with a second air outlet hole 72 of the positioner 70, the second air chamber hole 175 is in fluid communication with the ID hole 53, and the air chamber air storage hole 173 is in fluid communication with the IB Aperture location 51 is in fluid communication, and the vent hole 177 is in fluid communication with the atmosphere.

In this embodiment, both the first ventilation groove 13 and the first air chamber hole 174 are in fluid communication with the first annular groove 1241 , and the acceleration vent hole 191 is in fluid communication with the second annular groove 1242 , This causes the first air chamber 501 to vent to atmosphere through the IC port 52 in fluid communication with the first air chamber port 174 and the accelerated bleed port 191 .

In addition, the air storage hole 173 of the air chamber and the exhaust hole 1731 are in fluid communication with the fourth annular groove 1244, the air inlet hole 176 of the valve body 10 is in fluid communication with the fifth annular groove 1245, and the air discharge hole 177 is in fluid communication with the fifth annular groove 1245. The sixth annular groove 1246 is in fluid communication, and the air storage chamber 503 is in fluid communication with the IB hole 51 of the cylinder 50, the air chamber air storage hole 173 and the exhaust hole 1731. By this configuration, the exhaust hole 1731 has Higher air pressure than the input air hole 32, thereby causing the input air hole 32 to move towards the external three-way valve 30, thus providing fluid communication between the second air chamber hole 175 and the air chamber storage hole 173, thus , the air stored in the air storage chamber 503 is in fluid communication with the second air storage chamber 502, thereby causing the actuating member 54 to move to a set point, as shown in FIG. 10 .

Continuing to refer to FIGS. 2 , 11 and 12 , when there is sufficient pressure from the main air supply source 60 via the single-action manifold 21 to overcome the spring 125 and move the spool 121 downward, the spool 121 This translation of causes the first spool recess 1212 to permit fluid communication between the second annular groove 1242 and the third annular groove 1243, and the second spool recess 1213 allows the fifth annular groove 1245 to communicate with the third annular groove 1243. Fluid communication between sixth annular grooves 1246 .

In addition, both the first vent groove 13 and the first air chamber hole 174 are in fluid communication with the first annular groove 1241, while the acceleration vent hole 191 is in fluid communication with the second annular groove 1242, which allows the first air containment Chamber 501 receives air through the IC port 52 in fluid communication with the first air chamber hole 174 and the first vent slot 13 .

In this configuration, the gas storage hole 173 and the exhaust hole 1731 are in fluid communication with the fourth annular groove 1244, the air inlet hole 176 is in fluid communication with the fifth annular groove 1245, and the air discharge hole 177 is in fluid communication with the sixth annular groove 1245. The ring groove 1246 is in fluid communication, when the air pressure of the air inlet hole 171 is greater than that of the air storage chamber 503, the internal check valve 151 allows the air storage chamber 503 to be inflated through the inlet hole 171, and the fourth annular groove 1244 communicates with the exhaust hole 1731 and finally with the air storage hole 173 of the air chamber. Connected, so the vent hole 1731 keeps the air storage chamber 503 independent, the input air hole 32 has a higher air pressure than the vent hole 177, thereby causing the air outlet port 34 to move toward the external three-way valve, and then at the input Fluid communication is established between the air hole 32 , the second air chamber hole 175 and the second air chamber 502 .

Referring to Fig. 13 to Fig. 17, Fig. 19 and Fig. 20, in another embodiment of the present invention, the pneumatic shut-off valve 1 does not include the external three-way valve 30, as shown in Fig. 14 to Fig. 17, Fig. 19 and Fig. 20 Shown, the inlet hole 176 of the valve body 10 and the second vent groove 14 are plugged, the pneumatic shut-off valve 1 includes a through hole from the second air chamber hole 175 to the fifth annular groove 1245, the vent Hole 177 plays the same role as the input air hole 32 of the external three-way valve 30 .

When there is not enough air pressure supplied from the main air supply source 60 to the spool chamber 11 via the single-action adapter 21 to overcome the spring 125, the pneumatic shut-off valve 1 assumes this operating configuration, as shown in Figures 16 to 12. As shown in FIG. 18 , therefore, the spring 125 pushes up the spool 121, thereby positioning the first spool recess 1212 to allow fluid communication between the first annular groove 1241 and the second annular groove 1242, And the second spool recess 1213 is positioned to allow fluid communication between the fourth annular groove 1244 and the fifth annular groove 1245 .

Wherein, the first ventilation slot 13 is in fluid communication with the first air outlet hole 71 of the positioner 70, and the first air chamber hole 174 is in fluid communication with the IC hole 52, and the acceleration vent hole 191 is in fluid communication with the atmosphere, And the input air hole 32 is in fluid communication with the second air outlet hole 72 of the positioner 70, the second air chamber hole 175 is in fluid communication with the ID hole position 53, and the air chamber air storage hole 173 is in fluid communication with the IB of the cylinder 50. The hole position 51 is in fluid communication, the first ventilation groove 13 and the first air chamber hole 174 are both in fluid communication with the first annular groove 1241 , and the acceleration vent hole 191 is in fluid communication with the second annular groove 1242 , As a result, the first air chamber 501 is vented to the atmosphere through the IC hole 52 in fluid communication with the first air chamber hole 174 and the accelerated leak hole 191 .

In this embodiment, the input air hole 32 is in fluid communication with the sixth annular groove 1246, the second air chamber hole 175 is in fluid communication with the fifth annular groove 1245, and the air chamber air storage hole 173 and the exhaust hole 1731 It is in fluid communication with the fourth annular groove 1244, and this arrangement causes the air storage chamber 503 to be connected to the IB hole 51 of the cylinder 50, the air storage hole 173, the exhaust hole 1731, the second air chamber hole 175, The ID port 53 is in fluid communication with the second air chamber 502, so that the air supply from the air chamber 503 acts on the second air chamber 502, thereby causing the actuator 54 to move to a set point, such as shown in Figure 18.

Continuing to refer to FIGS. 19 to 21 , when there is sufficient pressure from the main air supply source 60 to the single-acting adapter 21 to overcome the upward bias of the spring 125, the spool 121 translates downward, thus, the The first spool recess 1212 is positioned to allow fluid communication between the second annular groove 1242 and the third annular groove 1243, and likewise, the second spool recess 1213 is positioned to allow the fifth annular groove 1245 to communicate with the third annular groove 1243. The fluid communication between the sixth annular groove 1246 .

In this embodiment, both the first vent groove 13 and the first air chamber hole 174 are in fluid communication with the first annular groove 1241, while the acceleration vent hole 191 is in fluid communication with the second annular groove 1242, which results in the The first air chamber 501 receives air through the IC hole 52 in fluid communication with the first air chamber hole 174 and the first air slot 13 .

In this embodiment, the input air hole 32 is in fluid communication with the sixth annular groove 1246, the second air chamber hole 175 is in fluid communication with the fifth annular groove 1245, and at the same time, the air chamber air storage hole 173 and the exhaust hole 1731 is in fluid communication with the fourth annular groove 1244, thereby causing the second air chamber 502 to be in fluid communication with the ID hole 53, the second air chamber hole 175 and the input air hole 32, when the air inlet hole 171 When the air pressure is greater than the air pressure of the air storage chamber 503, the internal check valve 151 allows the air storage chamber 503 to be inflated through the air inlet hole 171, therefore, the fourth fluid communication with the air chamber air storage hole 173 The ring groove 1244 keeps the gas storage chamber 503 independent.

Referring to Fig. 22 to Fig. 25, Fig. 27 and Fig. 28, in yet another embodiment of the present invention, the pneumatic shut-off valve 1 does not include the external three-way valve 30, in this regard, the air inlet hole 176 can be removed or blocked With the second vent groove 14, the input air hole 32 is synonymous with the vent hole 177, and a through hole to the sixth ring groove 1246 is provided on the side of the valve body 10, and the second air chamber hole 175 is provided to the sixth ring groove 1246. The through hole of the fifth ring groove 1245, the first vent groove 13 provides a through hole to the third ring groove 1243 on the side of the valve body 10, and the first air chamber hole 174 has a through hole to the second ring groove. The through hole of the groove 1242 , the acceleration vent hole 191 has a through hole to the first annular groove 1241 .

When there is not enough pressure from the main air supply source 60 to overcome the force of the spring 125 via the single-action connection 21, the spool 121 is biased upwards, as shown in FIGS. 24 to 26 , which Causes the first spool recess 1212 to be positioned to allow fluid communication between the first annular groove 1241 and the second annular groove 1242 and causes the second spool recess 1213 to be positioned to allow the fourth annular groove 1244 The fluid communication between the fifth annular groove 1245, in this configuration, the first vent groove 13 is in fluid communication with the first air outlet hole 71 of the positioner 70, the first air chamber hole 174 is in communication with the IC hole Position 52 is in fluid communication, and the acceleration vent hole 191 is in fluid communication with the atmosphere, the input air hole 32 is in fluid communication with the second air outlet hole 72 of the positioner 70, and the second air chamber hole 175 is in fluid communication with the ID hole position 53 , and the air storage hole 173 is in fluid communication with the IB hole 51 .

In this embodiment, the first ventilation groove 13 is also in fluid communication with the third annular groove 1243 , the first air chamber hole 174 is also in fluid communication with the second annular groove 1242 , and the acceleration vent hole 191 is also in fluid communication with the second annular groove 1242 . The first annular groove 1241 is in fluid communication, therefore, the first air chamber 501 communicates with the first air chamber The IC port 52 in fluid communication with the port 174 and the accelerator vent port 191 vents to atmosphere.

In addition, the input air hole 32 is in fluid communication with the sixth annular groove 1246, the second air chamber hole 175 is in fluid communication with the fifth annular groove 1245, and the air storage hole 173 and the exhaust hole 1731 are in fluid communication with the fourth The annular groove 1244 is in fluid communication, which makes the air storage chamber 503 and the IB hole 51 of the cylinder 50, the air storage hole 173, the exhaust hole 1731, the second air chamber hole 175, the ID hole 53 In fluid communication with the second plenum 502, the air supply received from the plenum 503 in the second plenum 502 causes the actuator 54 to move to a fail-safe set point.

Referring to FIG. 21 , FIG. 27 and FIG. 28 in conjunction with FIG. 2 , when there is sufficient pressure from the main air supply source 60 via the single-action connection 21 to overcome the force of the spring 125, the spool 121 moves downward, This causes the first spool recess 1212 to be positioned to allow fluid communication between the second annular groove 1242 and the third annular groove 1243, and causes the second spool recess 1213 to be positioned to allow the fifth annular groove The fluid communication between 1245 and the sixth annular groove 1246 .

In this embodiment, the first ventilation groove 13 is also in fluid communication with the third annular groove 1243 , the first air chamber hole 174 is also in fluid communication with the second annular groove 1242 , and the acceleration vent hole 191 is also in fluid communication with the second annular groove 1242 . The first annular groove 1241 is in fluid communication, therefore, the first air chamber 501 is in fluid communication with the IC hole 52 , the first air chamber hole 174 and the first air groove 13 .

In addition, the input air hole 32 is also in fluid communication with the sixth annular groove 1246, the second air chamber hole 175 is also in fluid communication with the fifth annular groove 1245, and the air chamber air storage hole 173 and the exhaust hole 1731 are also in fluid communication with the fifth annular groove 1245. The fourth annular groove 1244 is in fluid communication. This setting makes the second air chamber 502 in fluid communication with the ID hole 53, the second air chamber hole 175 and the input air hole 32. When the air pressure of the air inlet hole 171 When larger than the air storage chamber 503, the internal check valve 151 allows the air storage chamber 503 to be inflated through the air inlet hole 171, and the fourth annular groove 1244 in fluid communication with the air storage hole 173 makes the storage chamber gas Chamber 503 remains separate.

Referring to Fig. 2, Fig. 18 and Fig. 29 to Fig. 34, in yet another embodiment of the present invention, when there is not enough pressure from the main air supply source 60 to overcome the force of the spring 125 via the single-action connecting pipe 21 , the spool 121 is biased upwards, therefore, the first spool recess 1212 is positioned to allow fluid communication between the first annular groove 1241 and the second annular groove 1242, and the second spool recess Port 1213 is positioned to allow fluid communication between the fourth annular groove 1244 and the fifth annular groove 1245, the first vent groove 13 is in fluid communication with the first air outlet hole 71 of the positioner 70, the first air chamber The hole 174 is in fluid communication with the IC hole 52, and the acceleration leak hole 191 is in fluid communication with the atmosphere. The ID hole 53 is in fluid communication, and the air storage hole 173 is in fluid communication with the IB hole 51 of the cylinder 50 .

In this embodiment, the pneumatic shut-off valve 1 does not include the external three-way valve 30, therefore, for example, the air inlet hole 176 and the second ventilation groove 14 are not formed in the valve body 10, as shown in FIGS. 29 to 30 , or they can be plugged as shown in Figures 15-16.

The input air hole 32 provides an elongated passage to the sixth annular groove 1246 on the side of the valve body 10, the second air chamber hole 175 has an elongated passage to the fifth annular groove 1245, and the first vent groove 13 The side of the valve body 10 is provided with an elongated channel to the second annular groove 1242, the first air chamber hole 174 is provided with an elongated channel to the second annular groove 1242, and the acceleration vent hole 191 is provided with the second annular groove 1242. An elongated channel of an annular groove 1241 .

In this embodiment, both the first ventilation groove 13 and the first air chamber hole 174 are in fluid communication with the second annular groove 1242, and the acceleration vent hole 191 is in fluid communication with the first annular groove 1241, therefore, the The first air chamber 501 is in fluid communication with the first air chamber hole 174 and the acceleration leak hole 191 The IC holes 52 that are connected are vented to the atmosphere.

Wherein, the input air hole 32 is in fluid communication with the sixth annular groove 1246, the second air chamber hole 175 is in fluid communication with the fifth annular groove 1245, and the air storage hole 173 and the exhaust hole 1731 are in fluid communication with the fourth The annular groove 1244 is in fluid communication, and this arrangement makes the air storage chamber 503 communicate with the IB hole 51, the air storage hole 173, the exhaust hole 1731, the second air chamber hole 175, the ID hole 53 and the second air hole. The two air chambers 502 are in fluid communication, whereby receiving an air supply in the second air chamber 502 from the air chamber 503 causes the actuator 54 to move to a set point.

Referring again to Fig. 2, Fig. 21, Fig. 33 and Fig. 34, when there is enough pressure from the main air supply source 60 to overcome the upward force of the spring 125 via the single-action connection 21, the spool 121 is downward. Translation, therefore, the first spool recess 1212 is positioned to allow fluid communication between the second annular groove 1242 and the third annular groove 1243, and the second spool recess 1213 is positioned to allow the fifth annular groove 1243 Fluid communication between the groove 1245 and the sixth annular groove 1246 .

In this embodiment, the first ventilation groove 13 and the first air chamber hole 174 are also in fluid communication with the second annular groove 1242, and the acceleration vent hole 191 is also in fluid communication with the first annular groove 1241, so that the The first air chamber 501 is in fluid communication with the IC hole 52, the first air chamber hole 174 and the first vent groove 13. In addition, the input air hole 32 is also in fluid communication with the sixth annular groove 1246. The second The air chamber hole 175 is also in fluid communication with the fifth annular groove 1245, and the air chamber air storage hole 173 and the exhaust hole 1731 are also in fluid communication with the fourth annular groove 1244. Therefore, the second air chamber 502 and The ID hole 53, the second air chamber hole 175 and the input air hole 32 are in fluid communication. When the air pressure of the air inlet hole 171 is greater than the air pressure of the air storage chamber 503, the internal check valve 151 allows the The air inlet hole 171 inflates the air storage chamber 503 , and the fourth annular groove 1244 is in fluid communication with the air storage hole 173 to keep the air storage chamber 503 independent.

Referring to FIG. 29 to FIG. 34 , in yet another embodiment of the present invention, the input air hole 32 , the second air chamber hole 175 , the exhaust hole 1731 and the air chamber air storage hole are defined by the valve body 10 in different configurations. 173, the input air hole 32, the second air chamber hole 175 can be in fluid communication with the fifth annular groove 1245, and the air chamber air storage hole 173 and the exhaust hole 1731 can be in fluid communication with the fourth annular groove 1244, Alternatively, the input air hole 32, the second air chamber hole 175 may be in fluid communication with the fourth annular groove 1244, and the air chamber air storage hole 173 and the exhaust hole 1731 may be in fluid communication with the fifth annular groove 1245. connected.

Shown in Fig. 35 can be in this first ventilation slot 13, this first air chamber hole 174, this acceleration vent hole 191, this input air hole 32, this second air chamber hole 175 and this air chamber air storage hole 173 and Additional exemplary combinations 2000-2010 of fluid communication formed between the internal air paths of the valve body 10, FIG. 35 illustrates exemplary combinations 2000-2003 formed by four different configurations of the pneumatic shut-off valve 1, examples 2004- 2010 separately illustrates the exemplary positioning and connection of the external three-way valve 30, as shown in example 2004, with reference to FIG. When the second ring groove 1242 and the third ring groove 1243 are in fluid communication, since the main air supply source 60 applies a force to the valve core 121 to overcome the force of the spring 125, the spring 125 is in a compressed setting. In this setting, The pneumatic shut-off valve 1 is in a normal operating configuration, on the contrary, when the first vent groove 13 is in fluid communication with the first air chamber hole 174, the pneumatic shut-off valve 1 can be configured to pass through respectively in fail-safe operation. The first annular groove 1241 and the second annular groove 1242 make the first vent groove 13, the first air chamber hole 174 and the acceleration vent hole 191 fluidly communicated, which is insufficient when the main air supply source 60 is forced downward. Occurs when the spool 121 is moved to overcome the force of the spring 125 , therefore, the spool 121 translates upwards so that the first vent groove 13 , the first air chamber hole 174 communicates with the acceleration vent hole 191 .

To sum up, this creation has excellent progressive practicability among similar products. At the same time, after checking the technical information about this kind of structure at home and abroad, no similar structure has been found in the literature. Therefore, This creation already meets the requirements of a new patent, so please file an application in accordance with the law.

However, what is described above is only one of the better feasible embodiments of this creation, so all equivalent structural changes made by applying the instructions of this creation and the scope of the patent application should be included in the scope of the patent of this creation.

1: Pneumatic cut-off valve

10: valve body

13: The first ventilation slot

171: Air intake hole

172: Vent

173: air storage hole

174: The first air chamber hole

175: Second air chamber hole

191: Acceleration Vent

20: switch plate

30: External three-way valve

41: First pipeline

Claims (33)

A pneumatic cut-off valve, which includes: an external three-way valve, the external three-way valve has an input air hole; a valve body, the top of the valve body has a first ventilation groove, and the side of the valve body is provided with an air inlet Holes, a first air chamber hole, an accelerated vent hole, a second air chamber hole and an air storage hole, and the valve body is provided with a first pipeline and a second pipeline, the first pipeline is communicated with the air inlet on the side of the valve body, the second pipeline is communicated with the first pipeline, wherein the first pipeline and the second pipeline are communicated through an internal check valve, The first vent groove on the top of the valve body and the first air chamber hole on the side of the valve body and the acceleration leak hole communicate with each other, the input air hole of the external three-way valve and the second air hole on the side of the valve body communicate with each other. The chamber hole and the air storage hole of the air chamber communicate with each other. The pneumatic shut-off valve according to claim 1, wherein the air storage hole in the air chamber communicates with the second pipeline. The pneumatic cut-off valve according to claim 1, wherein the valve body is also provided with an external air chamber hole. The pneumatic shut-off valve of claim 1, wherein, in a normal operating configuration, it provides fluid communication between the first vent slot and the first air chamber hole and the input air hole and the second air chamber Fluid communication between pores. 8. The pneumatic shut-off valve of claim 1, wherein in a fail-safe configuration, it provides fluid communication between the first air chamber port and the acceleration vent port. The pneumatic shut-off valve according to claim 5, wherein the first air chamber hole is also in communication with the first air groove. The pneumatic shut-off valve as described in Claim 1, wherein, in the fail-safe configuration, It provides fluid communication between the second plenum hole and the plenum reservoir. The pneumatic cut-off valve according to claim 7, wherein the second air chamber hole is also in communication with the input air hole. The pneumatic shut-off valve as claimed in claim 1, wherein the first pipeline communicates with a main air supply source. The pneumatic shut-off valve as claimed in claim 1, wherein the second pipeline communicates with an external air reservoir. The pneumatic shut-off valve as claimed in claim 10, wherein the external air storage is an on-board air storage combined with the valve body. The pneumatic shut-off valve as claimed in claim 10, wherein the external air storage is an on-board air storage combined with a cylinder or a positioner. The pneumatic cut-off valve as described in claim 12, wherein the first vent slot is in communication with the positioner, the first air chamber hole is in communication with the cylinder, the acceleration air release hole is exhausted to the atmosphere, and the input air hole is in communication with the The positioner communicates, and the second air chamber hole communicates with the cylinder. The pneumatic cut-off valve as claimed in claim 13, wherein the air storage hole of the air chamber is sealed by a plug or communicated with the external air storage. The pneumatic shut-off valve according to claim 11, wherein the external air reservoir communicates with the air storage hole of the air chamber. The pneumatic shut-off valve according to claim 10, wherein the external air storage is an external independent air storage. The pneumatic shut-off valve according to claim 16, wherein the external air reservoir is in fluid communication with an external air chamber hole on the side of the valve body. The pneumatic shut-off valve according to claim 12, wherein the external air reservoir is in fluid communication with an external air chamber hole on the side of the valve body. The pneumatic cut-off valve as described in claim 18, wherein, the first venting groove communicates with the positioner, the first air chamber hole communicates with the cylinder, the acceleration leak hole exhausts to the atmosphere, and the input air hole communicates with the The positioner communicates, and the second air chamber hole communicates with the cylinder. The pneumatic shut-off valve as claimed in claim 12, wherein the air storage hole of the air chamber is sealed by a plug or is in fluid communication with the external air storage. The pneumatic shut-off valve of claim 20, wherein the external air reservoir is combined with at least one of the positioner or the cylinder. The pneumatic cut-off valve as claimed in claim 1, wherein the internal check valve is disposed in the valve body. The pneumatic shut-off valve as described in claim 1, wherein the pneumatic shut-off valve also includes a valve core chamber, the valve core chamber is arranged in the valve body, and a valve core is pierced in the valve core chamber The spool element also includes a spool sleeve, a spring, a spool with a plurality of spool notches, a plurality of seals and a plurality of ring grooves, wherein each of the ring grooves is covered by each of the seals Separated, at least one of the plurality of annular grooves communicates with at least one of the first vent groove, the first air chamber hole, the accelerated vent hole or the air chamber air storage hole, and the valve core responds Translates within the spool sleeve due to air pressure on the air supply. The pneumatic shut-off valve according to claim 23, wherein one of the plurality of spool recesses is positioned adjacent to at least one of the plurality of annular grooves during translation of the spool side. The pneumatic shut-off valve as described in claim 24, wherein the notch of the spool is faulty Fluid communication between two or more of the annular grooves is facilitated after translation of the spool during safety operation. The pneumatic shut-off valve as claimed in claim 25, wherein the pneumatic shut-off valve further includes a switch plate, the switch plate further provides a single valve that defines the fluid communication between the first pipeline and the spool chamber. take over. 25. The pneumatic shut-off valve of claim 25, wherein the pneumatic shut-off valve adopts a fail-safe configuration when the spool translates within the spool sleeve in response to a reduction in air pressure. The pneumatic shut-off valve of claim 25, wherein the pneumatic shut-off valve assumes a normal configuration when the spool translates within the spool sleeve due to an increase or return of air pressure. The pneumatic shut-off valve as recited in claim 1, wherein reducing the supply of air received at the inlet port may include reducing the air pressure below a minimum threshold. 29. The pneumatic shut-off valve of claim 29, wherein the minimum threshold is in the range of 0 to 150 psi. The pneumatic shut-off valve according to claim 1, wherein the pneumatic shut-off valve further includes the external three-way valve, and the external three-way valve communicates with the valve body. The pneumatic cut-off valve according to claim 1, wherein the first pipeline is also connected to an air outlet. A pneumatic shut-off valve, which is combined with a cylinder and a positioner, the pneumatic shut-off valve includes: an external three-way valve, the external three-way valve has an input air hole; a valve body, the top of the valve body There is a first vent slot, and the side of the valve body is provided with an air inlet hole, a first air chamber hole, an acceleration vent hole, a second air chamber hole and an air storage hole, and the valve body There is a first pipeline and a second pipeline, the first pipeline communicates with the air inlet on the side of the valve body, the second pipeline communicates with the first pipeline, wherein the first The first pipeline and the second pipeline are communicated through an internal check valve, and the first vent groove on the top of the valve body, the first air chamber hole and the accelerated air release hole on the side of the valve body are in communication with each other , the input air hole of the external three-way valve, the second air chamber hole on the side of the valve body and the air storage hole of the air chamber communicate with each other.

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