CN211649204U - Self-operated regulating valve - Google Patents
Self-operated regulating valve Download PDFInfo
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- CN211649204U CN211649204U CN201922474582.8U CN201922474582U CN211649204U CN 211649204 U CN211649204 U CN 211649204U CN 201922474582 U CN201922474582 U CN 201922474582U CN 211649204 U CN211649204 U CN 211649204U
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Abstract
The utility model relates to a governing valve technical field specifically discloses a self-operated governing valve, including valve body, valve cage, case, valve gap and valve rod, self-operated governing valve still includes pneumatic cylinder device, spring balancing unit, manual headstock gear and bypass subassembly, and the pneumatic cylinder device includes cylinder body, piston and lower cover, and spring balancing unit includes stand, lower spring extension board, goes up spring extension board and spring, and the bypass subassembly includes import bypass subassembly and export bypass subassembly, and manual headstock gear includes the hand wheel, fixed plate, transfer line, adapter sleeve and safeties. The utility model has the advantages that: compact structure, reasonable in design, the built-in pneumatic cylinder device of governing valve, bypass subassembly design benefit is reasonable, and piston ring and piston are sealed in the inside of valve body and adopt C type sealing washer and O type sealing washer, and the temperature resistant is high pressure resistant sealed effectual, and valve upper portion design has manual headstock gear and safeties, and the stability of operation is guaranteed to manual headstock gear, and safeties guarantees the safety of valve operation.
Description
Technical Field
The utility model belongs to the technical field of the governing valve, specifically a self-operated governing valve.
Background
The self-operated regulating valve drives the valve to automatically work by the pressure of the medium flowing through the valve, does not need an external power supply or an air source, is convenient and saves energy, sets parameters required by working conditions by regulating the output force of the spring, and also saves a large amount of manpower. The self-operated driving device is generally an external hydraulic cylinder.
The external self-operated regulating valve of the hydraulic cylinder can meet medium regulation under the working conditions of normal temperature, normal pressure and low pressure difference, but the valve under the working conditions of high temperature, high pressure and high pressure difference is difficult to meet. Because the diaphragm formula executor that mostly adopts of external formula of relying on oneself governing valve, this diaphragm material is mostly the butadiene-acrylonitrile rubber presss from both sides nylon cloth, bears pressure and temperature and hangs down, even increase the condensation jar between actuating mechanism and pipeline, it bears temperature and pressure also limitedly, moreover because bearing temperature risees, its bearing capacity further descends, is difficult to satisfy the operating mode demand. In addition, since the driving pressure of the actuator is taken from the pipeline medium, the pipeline medium leakage is directly caused by the fault leakage of the actuator, and the risk caused by the fault leakage is large.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a governing valve for solve the formula of relying on oneself governing valve among the prior art and can not satisfy high temperature, high pressure, heavy-calibre operating mode, have built-in pneumatic cylinder, external spring, bypass subassembly and manual headstock gear and constitute.
In order to solve the technical problem, the utility model provides a self-operated regulating valve, which comprises a valve body, a valve cage, a valve core, a valve cover and a valve rod, wherein the valve cage is arranged inside the valve body, the valve core is arranged inside the valve cage, the valve cover is arranged inside the valve body, the valve body is provided with a medium flow inlet and a medium flow outlet,
the self-operated regulating valve further comprises a hydraulic cylinder device, a spring balancing device, a manual opening and closing device and a bypass assembly, the hydraulic cylinder device is arranged in the valve body, the spring balancing device is arranged above the valve body, one end of the valve rod is fixedly connected with the valve core, the other end of the valve rod sequentially penetrates through the hydraulic cylinder device and the spring balancing device to be movably connected with the manual opening and closing device, the manual opening and closing device is arranged above the spring balancing device, the bypass assembly is arranged on a medium flow inlet and a medium flow inlet of the valve body, and the bypass assembly is communicated with the hydraulic cylinder device;
further, the pneumatic cylinder device includes cylinder body, piston and lower cover, the piston cover is established on the valve rod, the piston with be provided with between the valve rod to the ring, the cylinder body sets up the inside at the valve gap, the upper portion of cylinder body with be provided with upper portion circulation channel between the valve gap, the piston with the inner wall sliding connection of cylinder body, the lower cover sets up the below at the valve gap, the bottom embedding of cylinder body the lower cover, the piston divide into piston cylinder epicoele and piston cylinder cavity of resorption with the inside cavity of cylinder body, upper portion circulation channel with the epicoele intercommunication, the lower cover with be provided with lower circulation channel between the valve rod, lower circulation channel with piston cylinder cavity of resorption intercommunication.
Further, the spring balancing device comprises an upright post support, a lower spring support plate, an upper spring support plate and a spring, the upright post support is fixed to the top end of the valve body, the diameter of the upper section of the valve rod is smaller than that of the lower section of the valve rod, the lower spring support plate is sleeved on the upper section of the valve rod, two sides of the lower spring support plate are movably connected with the upright post support, the upper spring support plate penetrates through the valve rod and is sleeved above the lower spring support plate, two sides of the upper spring support plate are fixedly connected with the upright post support, the spring is arranged between the upper spring support plate and the lower spring support plate, a travel switch is arranged on the upright post support, and the travel switch limits the lower spring support plate.
Further, the bypass assembly comprises an inlet bypass assembly and an outlet bypass assembly, the inlet bypass assembly comprises an inlet pipe, a left valve and a seamless steel pipe, the inlet pipe is arranged on the valve body, the inlet pipe is communicated with the medium flow inlet, the left valve is connected with the inlet pipe, one end of the seamless steel pipe is connected with the left valve, and the other end of the seamless steel pipe sequentially penetrates through the valve body and the lower cover to be communicated with the lower flow passage;
further, the outlet bypass assembly comprises an outlet pipe, a right valve and a seamless steel pipe, the outlet pipe is arranged on the valve body, the outlet pipe is communicated with the medium outlet, the right valve is connected with the outlet pipe, one end of the seamless steel pipe is connected with the right valve, and the other end of the seamless steel pipe sequentially penetrates through the valve body and the valve cover to be communicated with the upper flow passage.
Further, manual headstock gear includes hand wheel, fixed plate, transfer line, adapter sleeve and safeties, the fixed plate is fixed stand support's top, the one end of transfer line with hand wheel fixed connection, the other end of transfer line passes the fixed plate with adapter sleeve fixed connection, safeties fixes on the hand wheel, the valve rod with adapter sleeve swing joint.
Further, the outside of valve bonnet bottom with valve body sealing connection, adopt C type metal ring to seal between the outside of cylinder body lower part and the valve bonnet, the inboard of cylinder body bottom with adopt C type metal ring to seal between the lower cover, the piston with adopt O type to seal the circle between the cylinder body, the piston with adopt O type sealing washer to seal between the valve rod, the outside of lower cover lower part with adopt C type metal ring to seal between the valve body, be fixed with sealed piece between lower cover and the valve rod, sealed piece with the lower cover with the valve rod all adopts C type metal ring to seal.
Further, be provided with from the sealing washer between valve gap and the valve body, the valve body is provided with the ring channel along the inner chamber circumferencial direction, inlay on the ring channel and be provided with the ring of four-ring.
The piston is provided with a fixing plate, and the fixing plate is fixed on the piston through a screw.
The utility model has the advantages that: the hydraulic cylinder device is arranged in the regulating valve, the bypass assembly is ingenious and reasonable in design, the piston ring and the piston are arranged in the valve body, the C-shaped sealing ring and the O-shaped sealing ring are adopted for sealing, the temperature-resistant and high-pressure-resistant sealing effect is good, the hydraulic cylinder device can be used under various high-temperature and high-pressure working conditions such as a power station water supply system, and a manual opening and closing device and a safety device are designed at the upper part of the valve; when manual operation is needed, the opening and closing stroke of the valve is manually adjusted, and the safety device can prevent irrelevant personnel from operating the hand wheel by mistake.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic view of a self-operated regulating valve according to the present invention in a closed state;
fig. 2 is a schematic view of an open state of a self-operated regulating valve according to the present invention;
fig. 3 is a schematic view of a hydraulic cylinder device of a self-operated control valve according to the present invention.
In the figure: 1-valve body, 2-valve cage, 3-valve core, 4-valve cover, 41-valve rod, 5-cylinder body, 6-piston, 7-lower cover, 8-upper flow channel, 9-balance hole, 10-O-shaped sealing ring, 11-split ring, 12-lower flow channel, 13-sealing block, 14-column support, 15-lower spring support, 16-spring, 17-upper spring support, 18-travel switch, 19-inlet pipe, 20-left valve, 21-seamless steel pipe, 22-outlet pipe, 23-right valve, 24-hand wheel, 25-fixing plate, 26-transmission rod, 27-connecting sleeve, 28-self-sealing ring and 29-four-opening ring.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
In a specific embodiment of the present invention, as shown in fig. 1 to 3, a self-operated regulating valve is specifically disclosed, which comprises a valve body 1, a valve cage 2, a valve core 3, a valve cover 4 and a valve rod 9, wherein the valve cage 2 is arranged inside the valve body 1, the valve core 3 is arranged inside the valve cage 2, the valve cover 4 is arranged inside the valve body 1, a medium inlet and a medium outlet are arranged on the valve body 1, a self-sealing ring 28 is arranged between the valve cover 4 and the valve body 1, an annular groove is arranged on the valve body 1 along the circumferential direction of an inner cavity, a four-open ring 29 is embedded on the annular groove,
the self-operated regulating valve also comprises a hydraulic cylinder device, a spring balancing device, a manual opening and closing device and a bypass assembly, wherein the hydraulic cylinder device is arranged in the valve body, the spring balancing device is arranged above the valve body, one end of a valve rod is fixedly connected with a valve core, the other end of the valve rod sequentially penetrates through the hydraulic cylinder device and the spring balancing device to be movably connected with the manual opening and closing device, the manual opening and closing device is arranged above the spring balancing device, the bypass assembly is arranged on a medium flow inlet and a medium flow inlet of the valve body, the bypass assembly is communicated with the hydraulic cylinder device, the valve rod and the hydraulic cylinder device interact with each other, the spring device and the valve rod;
the hydraulic cylinder device comprises a cylinder body 5, a piston 6 and a lower cover 7, wherein the piston 6 is sleeved on a valve rod 9, a split ring 11 is arranged between the piston 6 and the valve rod 9, the cylinder body 5 is arranged inside a valve cover 4, an upper flow passage 8 is arranged between the upper part of the cylinder body 5 and the valve cover 4, the piston 6 is in sliding connection with the inner wall of the cylinder body 5, the lower cover 7 is arranged below the valve cover 4, the bottom of the cylinder body 5 is embedded into the lower cover 7, a cavity inside the cylinder body is divided into a piston cylinder upper cavity and a piston cylinder lower cavity by the piston 6, the upper flow passage 8 is communicated with the piston cylinder upper cavity, a lower flow passage 12 is arranged between the lower cover 7 and the valve rod, the lower flow passage 12 is communicated with the piston.
The spring balancing device comprises an upright support 14, a lower spring support plate 15, an upper spring support plate 17 and a spring 16, wherein the upright support 14 is fixed at the top end of the valve body 1, the diameter of the upper section of the valve rod 9 is smaller than that of the lower section, the lower spring support plate 15 is sleeved on the upper section of the valve rod 9, two sides of the lower spring support plate 15 are movably connected with the upright support 14, the upper spring support plate 17 penetrates through the valve rod 9 and is sleeved above the lower spring support plate 15, two sides of the upper spring support plate 17 are fixedly connected with the upright support 14, the spring 16 is arranged between the upper spring support plate 17 and the lower spring support plate 15, a travel switch 18 is arranged on the upright support 14, and the travel switch 18.
The bypass assembly comprises an inlet bypass assembly and an outlet bypass assembly, the inlet bypass assembly comprises an inlet pipe 19, a left valve 20 and a seamless steel pipe 21, the inlet pipe 19 is arranged on the valve body 1, the inlet pipe 19 is communicated with the medium flow inlet, the left valve 20 is connected with the inlet pipe 19, one end of the seamless steel pipe 21 is connected with the left valve 20, and the other end of the seamless steel pipe penetrates through the valve body 1 and the lower cover 7 in sequence to be communicated with the lower flow channel 12;
the outlet bypass assembly comprises an outlet pipe 22, a right valve 23 and a seamless steel pipe 21, wherein the outlet pipe 22 is arranged on the valve body 1, the outlet pipe 22 is communicated with the medium outlet, the right valve 23 is connected with the outlet pipe 22, one end of the seamless steel pipe 21 is connected with the right valve 23, and the other end of the seamless steel pipe passes through the valve body 1 and the valve cover 4 in sequence to be communicated with the upper flow channel 8.
The manual opening and closing device comprises a hand wheel 24, a fixing plate 25, a transmission rod 26, a connecting sleeve 27 and a safety device, wherein the fixing plate 25 is fixed at the top end of the upright post support 14, one end of the transmission rod 26 is fixedly connected with the hand wheel 24, the other end of the transmission rod 26 penetrates through the fixing plate 25 and is fixedly connected with the connecting sleeve 27, the safety device is fixed on the hand wheel 24, the valve rod 9 is movably connected with the connecting sleeve 27, the connecting sleeve and the valve rod are provided with matched pin holes, and transmission pins are inserted.
The outside and the valve body 1 sealing connection of valve gap 4 bottom, adopt C type metal ring to seal between the outside of 5 lower parts of cylinder body and the valve gap 4, adopt C type metal ring to seal between the inboard of 5 bottoms of cylinder body and the lower cover 7, adopt O type seal ring 10 to seal between piston 6 and the cylinder body 5, adopt O type sealing washer 10 to seal between piston 6 and the valve rod 9, adopt C type metal ring to seal between the outside of 7 lower parts of lower cover and the valve body 1, be fixed with sealed piece 13 between lower cover 7 and the valve rod 9, sealed piece 13 and lower cover 7 and valve rod 9 all adopt C type metal ring to seal.
The utility model discloses a working process does: the medium flow before the valve and the medium flow after the valve generate pressure difference, the medium flow before the valve enters from the inlet pipe 19, passes through the left valve 20 and the seamless steel pipe 21, enters the lower flow channel 12 through the valve body 1 and the lower cover 7, finally flows into the upper cavity of the piston cylinder, so that the pressure in the lower piston cavity is increased, the piston 6 is driven to move upwards in the cylinder body 5 after the pressure is increased, so as to drive the valve rod 9 and the valve core 3 to move, the valve core 3 is opened, the medium flow after the valve flows to the valve, the medium flow after the valve is gradually increased in pressure, the medium flow after the valve enters from the outlet pipe 22, passes through the right valve 23 and the seamless steel pipe 21, enters the upper flow channel 8 through the valve body 1 and the valve cover 4, finally flows into the upper cavity of the piston cylinder, so that the pressure in the upper piston cavity is increased, the lower spring support plate 15 is driven, the relative position of the valve core 3 is determined, the hydraulic cylinder device is arranged in the regulating valve, the bypass assembly is ingenious and reasonable in design, the piston ring and the piston are arranged in the valve body, the C-shaped sealing ring and the O-shaped sealing ring are adopted in sealing, the temperature-resistant and high-pressure-resistant sealing effect is good, and the valve can be used under various high-temperature and high-pressure working conditions such as a power station water supply system.
When the medium flow pressure before the valve and the medium flow pressure after the valve are balanced, the valve core 3 is in a static state, when the medium flow pressure after the valve is greater than the medium flow pressure before the valve, the piston rod 9 is driven by the downward movement of the piston 6 with the upper cavity pressure of the piston cylinder greater than the lower cavity pressure of the piston cylinder, and the valve core 3 is closed downward.
When the valve core 3 needs to be opened or closed manually, the hand wheel 24 is rotated in the manual opening and closing device, so that the transmission rod 26 is pushed, the transmission rod 26 pushes the connecting sleeve 27 to move towards the position of the valve rod 9, the connecting sleeve 27 is opposite to a pin hole of the valve rod 9, a transmission pin penetrates through the pin hole, the hand wheel 24 is rotated to drive the valve rod 9 to move up and down, the opening and closing of the valve core 3 are completed, and the manual opening and closing device and the safety device are designed at the upper part of the upright; when manual operation is needed, the opening and closing stroke of the valve is manually adjusted, and the safety device can prevent irrelevant personnel from operating the hand wheel by mistake.
The above disclosure is only a preferred embodiment of the present invention, and certainly should not be taken as limiting the scope of the invention, which is defined by the claims and their equivalents.
Claims (8)
1. A self-operated regulating valve comprises a valve body (1), a valve cage (2), a valve core (3), a valve cover (4) and a valve rod (9), wherein the valve cage (2) is arranged inside the valve body (1), the valve core (3) is arranged inside the valve cage (2), the valve cover (4) is arranged inside the valve body (1), a medium flow inlet and a medium flow outlet are arranged on the valve body (1), and the self-operated regulating valve is characterized in that,
the self-operated regulating valve further comprises a hydraulic cylinder device, a spring balancing device, a manual opening and closing device and a bypass assembly, the hydraulic cylinder device is arranged in the valve body (1), the spring balancing device is arranged above the valve body (1), the manual opening and closing device is arranged above the spring balancing device, one end of a valve rod (9) is fixedly connected with the valve core (3), the other end of the valve rod sequentially penetrates through the hydraulic cylinder device, the spring balancing device and the manual opening and closing device to be movably connected, the bypass assembly is arranged on a medium flow inlet and a medium flow inlet of the valve body (1), and the medium flow inlet and the medium flow outlet are communicated with the hydraulic cylinder device through the bypass assembly.
2. The self-operated regulating valve according to claim 1, wherein the hydraulic cylinder device comprises a cylinder body (5), a piston (6) and a lower cover (7), the piston (6) is sleeved on a valve rod (9), a split ring (11) is arranged between the piston (6) and the valve rod (9), the cylinder body (5) is arranged inside a valve cover (4), an upper flow passage (8) is arranged between the upper part of the cylinder body (5) and the valve cover (4), the piston (6) is in sliding connection with the inner wall of the cylinder body (5), the lower cover (7) is arranged below the valve cover (4), the lower cover (7) is embedded in the bottom of the cylinder body (5), the cavity inside the cylinder body is divided into an upper piston cylinder cavity and a lower piston cylinder cavity by the piston (6), and the upper flow passage (8) is communicated with the upper piston cylinder cavity, a lower flow passage (12) is arranged between the lower cover (7) and the valve rod, and the lower flow passage (12) is communicated with the lower cavity of the piston cylinder.
3. A self-operated regulating valve according to claim 1, wherein the spring balancing device comprises a column support (14), a lower spring support plate (15), an upper spring support plate (17) and a spring (16), the column support (14) is fixed at the top end of the valve body (1), the diameter of the upper section of the valve rod (9) is smaller than that of the lower section, the lower spring support plate (15) is sleeved on the upper section of the valve rod (9), two sides of the lower spring support plate (15) are movably connected with the column support (14), the upper spring support plate (17) penetrates through the valve rod (9) and is sleeved above the lower spring support plate (15), two sides of the upper spring support plate (17) are fixedly connected with the column support (14), and the spring (16) is arranged between the upper spring support plate (17) and the lower spring support plate (15), a travel switch (18) is arranged on the upright post bracket (14), and the travel switch (18) limits the lower spring support plate (15).
4. A self-operated regulating valve according to claim 2, characterized in that the bypass assembly comprises an inlet bypass assembly and an outlet bypass assembly, the inlet bypass assembly comprises an inlet pipe (19), a left valve (20) and a seamless steel pipe (21), the inlet pipe (19) is arranged on the valve body (1), the inlet pipe (19) is communicated with the medium flow inlet, the left valve (20) is connected with the inlet pipe (19), one end of the seamless steel pipe (21) is connected with the left valve (20), and the other end of the seamless steel pipe is communicated with the lower flow passage (12) through the valve body (1) and a lower cover (7) in sequence;
the outlet bypass assembly comprises an outlet pipe (22), a right valve (23) and a seamless steel pipe (21), the outlet pipe (22) is arranged on the valve body (1), the outlet pipe (22) is communicated with the medium outlet, the right valve (23) is connected with the outlet pipe (22), one end of the seamless steel pipe (21) is connected with the right valve (23), and the other end of the seamless steel pipe sequentially penetrates through the valve body (1) and the valve cover (4) to be communicated with the upper flow channel (8).
5. A self-operated regulating valve according to claim 3, wherein the manual opening and closing device comprises a hand wheel (24), a fixing plate (25), a transmission rod (26), a connecting sleeve (27) and a safety device, the fixing plate (25) is fixed at the top end of the upright post bracket (14), one end of the transmission rod (26) is fixedly connected with the hand wheel (24), the other end of the transmission rod (26) penetrates through the fixing plate (25) and the connecting sleeve (27) to be fixedly connected, the safety device is fixed on the hand wheel (24), and the valve rod (9) is movably connected with the connecting sleeve (27).
6. A self-operated regulating valve according to claim 2, wherein the outer side of the bottom of the valve cover (4) is connected with the valve body (1) in a sealing way, a C-shaped metal ring is adopted between the outer side of the lower part of the cylinder body (5) and the valve cover (4) for sealing, a C-shaped metal ring is adopted between the inner side of the bottom of the cylinder body (5) and the lower cover (7) for sealing, an O-shaped sealing ring (10) is adopted between the piston (6) and the cylinder body (5) for sealing, an O-shaped sealing ring (10) is adopted between the piston (6) and the valve rod (9) for sealing, a C-shaped metal ring is adopted between the outer side of the lower part of the lower cover (7) and the valve body (1) for sealing, a sealing block (13) is fixed between the lower cover (7) and the valve rod (9), the sealing block (13), the lower cover (7) and the valve rod (9) are sealed by C-shaped metal rings.
7. A self-operated regulating valve according to claim 1, wherein a self-sealing ring (28) is arranged between the valve cover (4) and the valve body (1), the valve body (1) is provided with an annular groove along the circumferential direction of the inner cavity, and a four-open ring (29) is embedded in the annular groove.
8. A self-operated regulating valve according to claim 2, wherein the piston (6) is provided with a fixing plate, and the fixing plate is fixed on the piston (6) by screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922474582.8U CN211649204U (en) | 2019-12-31 | 2019-12-31 | Self-operated regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922474582.8U CN211649204U (en) | 2019-12-31 | 2019-12-31 | Self-operated regulating valve |
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| Publication Number | Publication Date |
|---|---|
| CN211649204U true CN211649204U (en) | 2020-10-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922474582.8U Active CN211649204U (en) | 2019-12-31 | 2019-12-31 | Self-operated regulating valve |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112240421A (en) * | 2020-10-15 | 2021-01-19 | 成都有智星科技有限公司 | Safety valve device |
| CN112240422A (en) * | 2020-10-15 | 2021-01-19 | 成都有智星科技有限公司 | Opening and closing method of valve |
-
2019
- 2019-12-31 CN CN201922474582.8U patent/CN211649204U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112240421A (en) * | 2020-10-15 | 2021-01-19 | 成都有智星科技有限公司 | Safety valve device |
| CN112240422A (en) * | 2020-10-15 | 2021-01-19 | 成都有智星科技有限公司 | Opening and closing method of valve |
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