CN212079401U - Low-parameter large-flow quick-closing adjusting combined valve - Google Patents
Low-parameter large-flow quick-closing adjusting combined valve Download PDFInfo
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- CN212079401U CN212079401U CN202020513788.7U CN202020513788U CN212079401U CN 212079401 U CN212079401 U CN 212079401U CN 202020513788 U CN202020513788 U CN 202020513788U CN 212079401 U CN212079401 U CN 212079401U
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Abstract
A low-parameter large-flow quick-closing adjusting combined valve relates to the technical field of adjusting valves. The high-pressure high-temperature high-pressure civil steam turbine generator set aims at solving the problems that the existing high-pressure civil steam turbine generator set cannot meet the control precision requirement and the field arrangement condition, is large in size and poor in regulation precision due to the fact that the air inlet flow of a steam turbine in the high-temperature high-pressure civil steam turbine generator set is regulated by adopting a large number of quick-closing regulation combined valves. Two regulating valves are uniformly arranged on the outer surface of the circumference of the steam chamber, one end of the steam chamber is provided with a quick closing valve, and the other end of the steam chamber is closed. The utility model is suitable for a steam turbine inlet flow adjusts among the civilian turbo generator set of high temperature high pressure.
Description
Technical Field
The utility model relates to a governing valve technical field, concretely relates to large-traffic fast valve of closing of low parameter adjusts combination valve.
Background
The main function of the speed-closing regulating combined valve is to change the flow area or steam inlet parameters of the through-flow part of the regulating valve so as to regulate the rotating speed or power of the steam turbine. Meanwhile, the quick closing valve needs to have a quick closing function so as to ensure the safety of the steam turbine generator unit. At present, the quick-closing regulating combined valve is mostly applied to high-temperature and high-pressure civil steam turbine generator units, and for low-parameter steam turbine generator units, the steam inlet volume flow is inevitably large, and the caliber and the number of the regulating valves are increased.
In summary, the existing civil high-temperature and high-pressure steam turbine generator unit adopts a large number of quick-closing adjusting combined valves to adjust the air inlet flow of a steam chamber in the civil high-temperature and high-pressure steam turbine generator unit, so that the problems of incapability of meeting the control precision requirement and the field arrangement condition, large volume and poor adjusting precision are caused.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve current adoption a large amount of fast joint valve that closes of adjusting, adjust the inlet flow of steam chamber among the civil turbo generator set of high temperature high pressure, lead to can not satisfying the arrangement condition on control accuracy requirement and scene, the volume is great to adjust the relatively poor problem of precision, and provide a large-traffic fast joint valve that closes of low parameter.
The utility model relates to a low-parameter large-flow quick-closing regulating combined valve, which comprises two regulating valves, a quick-closing valve and a steam chamber;
two regulating valves are uniformly arranged on the outer surface of the circumference of the steam chamber, one end of the steam chamber is provided with a quick closing valve, and the other end of the steam chamber is closed;
furthermore, a baffle is arranged in the steam chamber, the baffle is perpendicular to the axis of the steam chamber, and the steam chambers on two sides of the baffle are respectively provided with an adjusting valve;
furthermore, the regulating valve comprises a regulating valve seat, a regulating valve disc, a regulating valve rod, a regulating valve sleeve, a snap ring, a regulating valve cover, a regulating valve sleeve and a retainer ring;
the regulating valve comprises a regulating valve seat, a regulating valve sleeve, a regulating valve rod, a regulating valve sleeve and a regulating valve rod, wherein the regulating valve seat is cylindrical, one end of the regulating valve seat is communicated with the outer surface of a steam chamber, the axis of the regulating valve seat is perpendicular to the axis of the steam chamber, a regulating valve disk is embedded in the regulating valve seat, the regulating valve disk is cylindrical with a step-shaped cavity, one end of the regulating valve sleeve is sleeved on the outer circular surface of the regulating valve disk, one end of the regulating valve rod is inserted into the other end of the regulating valve sleeve, a through hole is formed in the regulating valve cover in the axial direction, a regulating valve sleeve is embedded in the through hole, a clamping ring is arranged between one end of the regulating valve sleeve and the through hole of the regulating valve cover, one end of;
furthermore, one end of the valve cover of the regulating valve is fixedly connected with the other end of the valve cover of the regulating valve through m pins, wherein m is a positive integer;
furthermore, the number m of the pins is more than or equal to 2 and less than or equal to 4;
furthermore, the regulating valve sleeve is in clearance fit with the regulating valve cover;
furthermore, the quick-closing valve comprises a quick-closing valve seat, a quick-closing valve disc, a valve disc nut, a quick-closing valve sleeve, a quick-closing valve cover and a quick-closing valve rod;
one end of a quick-closing valve seat is fixedly connected with one end of a steam chamber, the quick-closing valve seat is communicated with the steam chamber, the other end of the quick-closing valve seat is fixedly connected with one end of a quick-closing valve disc, the other end of the quick-closing valve disc is fixedly connected with one end of a quick-closing valve sleeve, a valve disc nut is embedded in one end of the quick-closing valve sleeve, one end of a quick-closing valve cover is inserted into an inner hole of the valve disc nut, a through hole is formed in the quick-closing valve cover along the axis direction, and one end of a quick-closing valve rod sequentially penetrates through the through hole of the quick-closing valve cover and the inner hole of the valve disc nut and is connected with the inner part of one;
furthermore, a steam seal sleeve is arranged between the valve rod of the quick-closing valve and the inner surface of the through hole of the valve cover of the quick-closing valve;
further, during operation, the regulating valve is used for realizing the change of the steam inlet amount of the steam turbine generator unit, the regulating valve seat is in interference fit with the steam chamber, the regulating valve cover is connected to the steam chamber through bolts, the regulating valve sleeve is in clearance fit with the regulating valve cover, and the regulating valve sleeve and the regulating valve cover are fixed in the regulating valve cover through the clamping ring and the retaining ring, so that the function of reducing steam leakage of the valve rod is achieved. The regulating valve rod and the regulating valve sleeve are in clearance fit, and the valve rod can drive a regulating valve disc to realize the opening and closing of the regulating valve. The regulating valve sleeve is fixed on the regulating valve cover through a pin and plays a role in guiding the regulating valve disc during movement;
the quick-closing valve mainly realizes the quick-closing function except the normal opening and closing, and the principle of the quick-closing valve is similar to that of a regulating valve. The quick-closing valve seat is in interference fit with the steam chamber, the quick-closing valve cover is connected to the steam chamber through a bolt, the steam seal cover and the quick-closing valve cover are in clearance fit and fixed in the quick-closing valve cover through a clamp ring, and the function of reducing steam leakage of the valve rod is achieved;
after the valve rod of the quick-closing valve is pre-opened for a stroke, steam can enter the valve from the front of the valve through a cavity structure formed by a valve disc of the quick-closing valve and a valve disc nut, and the lifting force of the valve during opening is reduced. The valve rod of the quick-closing valve drives the valve disc of the quick-closing valve to realize the opening and closing of the quick-closing valve, and the valve sleeve of the quick-closing valve plays a role in guiding the movement of the valve disc of the quick-closing valve;
before the quick-closing adjusting combined valve works, a valve of a main gas pipeline is opened firstly and is in a full-open state, the quick-closing valve is adjusted to be in a full-open state, gas enters the quick-closing valve and an adjusting valve after passing through a diffusion section, a pressure stabilizing cylinder and a convergence section, then the valve is opened to a required opening degree, the gas flowing through the adjusting valve is led out of a steam chamber through an exhaust pipe after passing through a valve seat diffusion section and enters a steam turbine finally, and control of different working conditions of a unit is achieved.
Compared with the prior art, the utility model following beneficial effect has:
one, the utility model overcomes prior art's shortcoming adopts the steam chamber along the even two governing valves that are equipped with of circumference surface, and the one end of steam chamber is equipped with the fast valve that closes, and the inlet flow of steam chamber among the civil turbo generator set of high temperature high pressure is adjusted to the other end confined mode of steam chamber, satisfies the arrangement condition on control accuracy requirement and scene.
Two, the utility model overcomes prior art's shortcoming only adopts two governing valves and a fast valve of closing, realizes adjusting the high accuracy of the inlet flow of steam chamber among the civil turbo generator set of high temperature high pressure to the device's volume is less.
Thirdly, the utility model is simple in operation and convenient in use.
Drawings
Fig. 1 is a cross-sectional view of a low-parameter, high-flow, quick-closing modulating combination valve of the present invention;
FIG. 1 includes 1-adjusting valve seat, 2-steam chamber, 3-adjusting valve disk, 4-adjusting valve rod, 5-adjusting valve sleeve, 6-snap ring, 7-pin, 8-adjusting valve cover, 9-adjusting valve sleeve, 10-baffle ring, 11-quick-closing valve seat, 12-quick-closing valve disk, 13-valve disk nut, 14-quick-closing valve sleeve, 15-quick-closing valve cover, 16-steam seal cover and 17-quick-closing valve rod.
Detailed Description
The first embodiment is as follows: the embodiment is described with reference to fig. 1, and the low-parameter high-flow quick-closing combined regulating valve of the embodiment comprises two regulating valves, a quick-closing valve and a steam chamber 2;
two regulating valves are uniformly arranged on the outer surface of the circumference of the steam chamber 2, one end of the steam chamber 2 is provided with a quick closing valve, and the other end of the steam chamber 2 is closed;
this embodiment, at the during operation, the governing valve is used for realizing the change of turbo generator set steam admission volume, and 1 interference fit of governing valve disk seat is on steam chamber 2, and governing valve gap 8 passes through bolted connection in steam chamber 2, and governing valve sleeve 9 is clearance fit with governing valve gap 8, fixes in governing valve gap 8 through snap ring 6 and fender ring 10, plays the effect that reduces the valve rod and leak out vapour. The regulating valve rod 4 and the regulating valve sleeve 9 are in clearance fit, and the valve rod can drive the regulating valve disc 2 to realize the opening and closing of the regulating valve. The regulating valve sleeve 5 is fixed on a regulating valve cover 8 through a pin 7 and plays a role in guiding the movement of the regulating valve disc 2;
the quick-closing valve mainly realizes the quick-closing function except the normal opening and closing, and the principle of the quick-closing valve is similar to that of a regulating valve. The quick-closing valve seat 11 is in interference fit with the steam chamber 2, the quick-closing valve cover 15 is connected to the steam chamber 2 through bolts, the steam seal sleeve 16 and the quick-closing valve cover 15 are in clearance fit and fixed in the quick-closing valve cover 15 through a clamping ring, and the function of reducing steam leakage of the valve rod is achieved;
after the quick-closing valve rod 17 is pre-opened for a stroke, steam can enter the valve from the front through a cavity structure formed by the quick-closing valve disc 12 and the valve disc nut 13, and the lifting force of the valve during opening is reduced. The valve rod 17 of the quick-closing valve drives the valve disc 12 of the quick-closing valve to realize the opening and closing of the quick-closing valve, and the valve sleeve 14 of the quick-closing valve plays a role in guiding the movement of the valve disc 12 of the quick-closing valve;
before the quick-closing adjusting combined valve works, a valve of a main gas pipeline is opened firstly and is in a full-open state, the quick-closing valve is adjusted to be in a full-open state, gas enters the quick-closing valve and an adjusting valve after passing through a diffusion section, a pressure stabilizing cylinder and a convergence section, then the valve is opened to a required opening degree, the gas flowing through the adjusting valve is led out of a steam chamber through an exhaust pipe after passing through a valve seat diffusion section and enters a steam turbine finally, and control of different working conditions of a unit is achieved.
The second embodiment is as follows: the present embodiment is described with reference to fig. 1, and is a further limitation of the quick-closing regulating combined valve according to the first embodiment, in the low-parameter high-flow quick-closing regulating combined valve according to the present embodiment, a baffle is disposed inside the steam chamber 2, the baffle is disposed perpendicular to an axis of the steam chamber 2, and two steam chambers on both sides of the baffle are respectively provided with a regulating valve;
this embodiment, governing valve adopt ball type valve structure, have that the leakproofness is good, grind convenient characteristic. The regulating valve has better flow characteristic and can meet the regulating requirements of different working conditions.
The third concrete implementation mode: the present embodiment is described with reference to fig. 1, and is a further limitation of the quick-closing regulating combined valve according to the first embodiment, and the low-parameter high-flow quick-closing regulating combined valve according to the present embodiment includes a regulating valve seat 1, a regulating valve disc 3, a regulating valve stem 4, a regulating valve sleeve 5, a snap ring 6, a regulating valve cover 8, a regulating valve sleeve 9, and a retainer ring 10;
the regulating valve seat 1 is cylindrical, one end of the regulating valve seat 1 is communicated with the outer surface of the steam chamber 2, the axis of the regulating valve seat 1 is vertical to the axis of the steam chamber 2, a regulating valve disc 3 is embedded in the regulating valve seat 1, the regulating valve disc 3 is in a cylindrical shape with a step-shaped cavity, one end of a regulating valve sleeve 5 is sleeved on the outer circular surface of the regulating valve disc 3, one end of a regulating valve cover 8 is inserted into the other end of the regulating valve sleeve 5, a through hole is arranged in the regulating valve cover 8 along the axial direction, a regulating valve sleeve 9 is embedded in the through hole, a clamping ring 6 is arranged between one end of the regulating valve sleeve 9 and the through hole of the regulating valve cover 8, one end of a regulating valve rod 4 passes through the regulating valve, the other end of the regulating valve sleeve 9 is fixedly connected with the end face of the other end of the regulating valve cover 8 through a baffle ring 10;
in the specific embodiment, the regulating valves are adopted to exhaust gas from the upper part, and the functional design of the valves ensures the regulating performance of the valves, namely the flow and the lifting force coefficient of the valves under different opening degrees, so that the control of a valve lifting mechanism is facilitated;
the regulating valve has a load relief structure, and the structure enables the combined valve to have smaller lifting force when opened, thereby facilitating the control of the lifting mechanism. Meanwhile, due to the fact that steam inlet parameters are low, the wall thickness of the valve casing is designed to be thin, strength meets requirements, and meanwhile the weight of the combined valve is reduced.
The fourth concrete implementation mode: the present embodiment is described with reference to fig. 1, and is a further limitation of the quick-closing regulating combined valve according to the third embodiment, in the quick-closing regulating combined valve according to the present embodiment, one end of the regulating valve cover 8 is fixedly connected to the other end of the regulating valve sleeve 5 through m pins 7, and m is a positive integer;
in the specific embodiment, one end of the regulating valve cover 8 is fixedly connected with the other end of the regulating valve sleeve 5 through the pins 7, so that the stability is improved.
The fifth concrete implementation mode: the present embodiment is described with reference to fig. 1, and the present embodiment is a further limitation of the quick-closing combination valve according to the fourth embodiment, and in the low-parameter high-flow quick-closing combination valve according to the present embodiment, the number m of the pins 7 is 2 ≦ m ≦ 4.
The sixth specific implementation mode: the present embodiment will be described with reference to fig. 1, and the present embodiment is a further limitation of the quick-closing combination regulating valve according to the third embodiment, and in the low-parameter high-flow quick-closing combination regulating valve according to the present embodiment, the regulating valve sleeve 9 is in clearance fit with the regulating valve cover 8.
The seventh embodiment: the present embodiment is described with reference to fig. 1, and is further limited to the quick-closing combined regulating valve described in the first embodiment, and the quick-closing valve described in the present embodiment includes a quick-closing valve seat 11, a quick-closing valve disc 12, a valve disc nut 13, a quick-closing valve sleeve 14, a quick-closing valve bonnet 15, and a quick-closing valve stem 17;
one end of a quick-closing valve seat 11 is fixedly connected with one end of a steam chamber 2, the quick-closing valve seat 11 is communicated with the steam chamber 2, the other end of the quick-closing valve seat 11 is fixedly connected with one end of a quick-closing valve disc 12, the other end of the quick-closing valve disc 12 is fixedly connected with one end of a quick-closing valve sleeve 14, a valve disc nut 13 is embedded into one end of the quick-closing valve sleeve 14, one end of a quick-closing valve cover 15 is inserted into an inner hole of the valve disc nut 13, a through hole is formed in the quick-closing valve cover 15 along the axis direction, and one end of a quick-closing valve rod 17 sequentially penetrates through the through hole of the quick-closing valve cover 15 and the inner hole of the valve disc nut 13 and is connected with the inner part of one end;
in the specific embodiment, the quick-closing valve adopts a ball valve structure, and has the characteristics of good sealing performance and convenience in grinding. The regulating valve has better flow characteristics and can meet the regulating requirements of different working conditions; the quick-closing valve is used for air inlet from the upper part, and the adjustment performance of the valve, namely the flow and the lifting force coefficient of the valve under different opening degrees are ensured by the functional design of the valve, so that the control of a valve lifting mechanism is facilitated; when the steam turbine generator set operates, the valve rod 17 of the quick closing valve drives the valve disc 12 to open and close relative to the valve seat 11 of the quick closing valve, and the steam inlet quantity of the steam turbine is controlled.
The specific implementation mode is eight: the present embodiment is described with reference to fig. 1, and is a further limitation of the quick-closing regulating combined valve according to the seventh embodiment, in the low-parameter high-flow quick-closing regulating combined valve according to the present embodiment, a steam jacket 16 is provided between the valve rod 17 of the quick-closing valve and the inner surface of the through hole of the valve cover 15 of the quick-closing valve;
in the specific embodiment, the steam seal sleeve 16 is arranged between the valve rod 17 of the quick-closing valve and the inner surface of the through hole of the valve cover 15 of the quick-closing valve, so that the sealing performance of the quick-closing valve is improved.
Principle of operation
During operation, the regulating valve is used for changing the steam inlet amount of the steam turbine generator unit, the regulating valve seat 1 is in interference fit with the steam chamber 2, the regulating valve cover 8 is connected to the steam chamber 2 through bolts, the regulating valve sleeve 9 and the regulating valve cover 8 are in clearance fit and fixed in the regulating valve cover 8 through the clamping ring 6 and the retaining ring 10, and the function of reducing steam leakage of the valve rod is achieved. The regulating valve rod 4 and the regulating valve sleeve 9 are in clearance fit, and the valve rod can drive the regulating valve disc 2 to realize the opening and closing of the regulating valve. The regulating valve sleeve 5 is fixed on a regulating valve cover 8 through a pin 7 and plays a role in guiding the movement of the regulating valve disc 2;
the quick-closing valve mainly realizes the quick-closing function except the normal opening and closing, and the principle of the quick-closing valve is similar to that of a regulating valve. The quick-closing valve seat 11 is in interference fit with the steam chamber 2, the quick-closing valve cover 15 is connected to the steam chamber 2 through bolts, the steam seal sleeve 16 and the quick-closing valve cover 15 are in clearance fit and fixed in the quick-closing valve cover 15 through a clamping ring, and the function of reducing steam leakage of the valve rod is achieved;
after the quick-closing valve rod 17 is pre-opened for a stroke, steam can enter the valve from the front through a cavity structure formed by the quick-closing valve disc 12 and the valve disc nut 13, and the lifting force of the valve during opening is reduced. The valve rod 17 of the quick-closing valve drives the valve disc 12 of the quick-closing valve to realize the opening and closing of the quick-closing valve, and the valve sleeve 14 of the quick-closing valve plays a role in guiding the movement of the valve disc 12 of the quick-closing valve;
before the quick-closing adjusting combined valve works, a valve of a main gas pipeline is opened firstly and is in a full-open state, the quick-closing valve is adjusted to be in a full-open state, gas enters the quick-closing valve and an adjusting valve after passing through a diffusion section, a pressure stabilizing cylinder and a convergence section, then the valve is opened to a required opening degree, the gas flowing through the adjusting valve is led out of a steam chamber through an exhaust pipe after passing through a valve seat diffusion section and enters a steam turbine finally, and control of different working conditions of a unit is achieved.
Claims (8)
1. A low parameter large flow rate fast closing regulating combined valve comprises a steam chamber (2), and is characterized in that: comprises two regulating valves and a quick closing valve;
two regulating valves are uniformly arranged on the outer surface of the circumference of the steam chamber (2), a quick-closing valve is arranged at one end of the steam chamber (2), and the other end of the steam chamber (2) is closed.
2. A low parameter high flow rate quick-closing combination regulating valve according to claim 1, characterized in that: the inside of steam chamber (2) be equipped with the baffle, and the baffle sets up with the axis of steam chamber (2) is perpendicular, the both sides steam chamber of baffle is equipped with an governing valve respectively.
3. A low parameter high flow rate quick-closing combination regulating valve according to claim 1, characterized in that: the regulating valve comprises a regulating valve seat (1), a regulating valve disc (3), a regulating valve rod (4), a regulating valve sleeve (5), a snap ring (6), a regulating valve cover (8), a regulating valve sleeve (9) and a retainer ring (10);
the regulating valve seat (1) is cylindrical, one end of the regulating valve seat (1) is communicated with the outer surface of the steam chamber (2), the axis of the regulating valve seat (1) is vertical to the axis of the steam chamber (2), a regulating valve disc (3) is embedded in the regulating valve seat (1), the regulating valve disc (3) is cylindrical with a step-shaped cavity, one end of a regulating valve sleeve (5) is sleeved on the outer circular surface of the regulating valve disc (3), one end of a regulating valve cover (8) is inserted into the other end of the regulating valve sleeve (5), a through hole is formed in the regulating valve cover (8) in the axial direction, a regulating valve sleeve (9) is embedded in the through hole, a clamping ring (6) is arranged between one end of the regulating valve sleeve (9) and the through hole of the regulating valve cover (8), and the regulating valve sleeve (9) is penetrated by one end of, is rotatably connected with the inner surface of the regulating valve disc (3), and the other end of the regulating valve sleeve (9) is fixedly connected with the end face of the other end of the regulating valve cover (8) through a baffle ring (10).
4. A low parameter high flow rate quick-closing combination regulating valve according to claim 3, characterized in that: one end of the regulating valve cover (8) is fixedly connected with the other end of the regulating valve sleeve (5) through m pins (7), and m is a positive integer.
5. A low parameter high flow rate quick closing combination regulating valve according to claim 4, characterized in that: the number m of the pins (7) is more than or equal to 2 and less than or equal to 4.
6. A low parameter high flow rate quick-closing combination regulating valve according to claim 3, characterized in that: the regulating valve sleeve (9) is in clearance fit with the regulating valve cover (8).
7. A low parameter high flow rate quick-closing combination regulating valve according to claim 1, characterized in that: the quick-closing valve comprises a quick-closing valve seat (11), a quick-closing valve disc (12), a valve disc nut (13), a quick-closing valve sleeve (14), a quick-closing valve cover (15) and a quick-closing valve rod (17);
the one end of fast valve disk seat (11) and the one end fixed connection of steam chamber (2) close, and fast valve disk seat (11) and steam chamber (2) intercommunication set up, the other end of fast valve disk seat (11) and the one end fixed connection of fast valve disk (12) close, the other end of fast valve disk (12) and the one end fixed connection of fast valve housing (14) close, valve disk nut (13) have been inlayed to the one end inside of fast valve housing (14), the one end of fast valve cover (15) is inserted in the hole of valve disk nut (13), fast valve cover (15) are equipped with the through-hole along the axis direction, the one end of fast valve rod (17) passes the through-hole of fast valve cover (15) and the hole of valve disk nut (13) in proper order, with the one end internal connection of fast valve disk (12) close.
8. A low parameter high flow rate quick-closing combination regulating valve according to claim 7, wherein: and a steam seal sleeve (16) is arranged between the valve rod (17) of the quick-closing valve and the inner surface of the through hole of the valve cover (15) of the quick-closing valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020513788.7U CN212079401U (en) | 2020-04-09 | 2020-04-09 | Low-parameter large-flow quick-closing adjusting combined valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020513788.7U CN212079401U (en) | 2020-04-09 | 2020-04-09 | Low-parameter large-flow quick-closing adjusting combined valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212079401U true CN212079401U (en) | 2020-12-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020513788.7U Active CN212079401U (en) | 2020-04-09 | 2020-04-09 | Low-parameter large-flow quick-closing adjusting combined valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212079401U (en) |
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2020
- 2020-04-09 CN CN202020513788.7U patent/CN212079401U/en active Active
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