CN205226428U - Ultra -low temperature gate valve - Google Patents

Abstract

The utility model discloses an ultra -low temperature gate valve, include: valve body and long -neck valve gap, the upper end inboard of valve body is connected with the outside of long -neck valve gap through the valve mother be provided with the sealing plug between the valve body of the female lower extreme of valve and the long -neck valve gap be provided with the connecting block between the valve body of valve mother upper end and the long -neck valve gap, the connecting block is connected with the valve body through a set screw, the connecting block is connected with the long -neck valve gap through the 2nd set screw be provided with inlet valve seat and export disk seat in the valve body be provided with the intake channel in the one side of valve body and the inlet valve seat be provided with exit channel in the opposite side of valve body and the export disk seat be provided with the lumen passageway that feeds through each other with intake channel and exit channel between inlet valve seat and the export disk seat be provided with the flashboard of mutually supporting with inlet valve seat and export disk seat in the lumen passageway.

Description

Ultra-low temperature throttle valve

Technical field

The utility model relates to a kind of valve, particularly relates to a kind of ultra-low temperature throttle valve.

Background technique

At present, the pipeline of electric power, waterpower, petrochemical industry, metallurgy industry all can use ultra-low temperature throttle valve, for the cut-out of liquid in pipeline, mainly there is following shortcoming in existing ultra-low temperature throttle valve: one, owing to using long-neck valve gap, the shaft length coordinated with long-neck valve gap is longer, and when upwards opening flashboard by valve rod, valve rod is not easily located, easily make flashboard and long-neck valve gap collide, even draw bad flashboard; Two, be generally all directly be connected by screw between valve body with long-neck valve gap, connect not tight, easily loosen, working life is short, and structural strength is poor; Three, due to valve closing time, the lumen passage between import valve seat and outlet valve seat is sealing configuration, and the gas in lumen passage easily gasifies, and after gasification, volume can expand thousands of times, easily causes valve body to burst apart and sets off an explosion and fire disaster accident; Four, existing ultra-low temperature throttle valve does not all have to arrange draining board in sealing material lower end, design unreasonable, the water droplet of ball valve upper end condensation can be dropped on valve body, cold is caused to run off, the water droplet of condensation heat release can freeze and cause sealing material to lose efficacy on valve body, and the low temperature in valve body can be delivered to the health of handle position to adjustment personnel and cause damage.

Model utility content

Technical problem to be solved in the utility model is: the ultra-low temperature throttle valve providing a kind of safe and reliable, long service life.

In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is: ultra-low temperature throttle valve, comprise: valve body and long-neck valve gap, be connected with the outside of long-neck valve gap by valve mother inside the upper end of described valve body, sealing plug is provided with between the valve body and long-neck valve gap of the female lower end of described valve, contiguous block is provided with between the valve body and long-neck valve gap of the female upper end of described valve, described contiguous block is connected with valve body by the first set screw, described contiguous block is connected with long-neck valve gap by the second set screw, import valve seat and outlet valve seat is provided with in described valve body, inlet passage is provided with in the side of described valve body and import valve seat, outlet passage is provided with in the opposite side and outlet valve seat of described valve body, the lumen passage be interconnected with inlet passage and outlet passage is provided with between described import valve seat and outlet valve seat, the flashboard cooperatively interacted with import valve seat and outlet valve seat is provided with in described lumen passage, be provided with the relief hole be interconnected with inlet passage and lumen passage near the side of inlet passage at described flashboard, described flashboard is connected with one end of valve rod, the other end of described valve rod stretches out long-neck valve gap and is connected with screw rod, described screw rod is connected with rotatable handle, position-limited rack is fixedly installed outside the upper end of described long-neck valve gap, inside the upper end of described long-neck valve gap and be provided with stuffing box packing between valve rod, graphite packing spacer ring is provided with between the long-neck valve gap and valve rod of described stuffing box packing lower end, sealing seat is provided with between the long-neck valve gap and valve rod of described graphite packing spacer ring lower end, described stuffing box packing upper end is provided with hold-down grid, the two ends of described hold-down grid are connected with position-limited rack with pre-pressing nut respectively by pre-pressing bolt, the valve rod of described hold-down grid upper end is provided with movable stand, guide rod is respectively arranged with in the lower end, both sides of described movable stand, described position-limited rack is provided with the pilot hole cooperatively interacted with guide rod, described guide rod is connected with limiting stopper through pilot hole, described position-limited rack is provided with link press span, described link press span is provided with the swivel nut cooperatively interacted with screw rod, cover at the long-neck valve of described limiting stopper lower end and be provided with draining board.

The utility model has the advantages that: above-mentioned ultra-low temperature throttle valve, the height that valve rod upwards promotes can be controlled by valve stem spacing device, during guarantee valve open, flashboard can not contact with long-neck valve gap, ensure the use safety of flashboard, valve body is tightr by being connected inside and outside valve mother with between long-neck valve gap simultaneously, the dual connection of attachment screw adds the steadiness between valve body and long-neck valve gap again, it is firm to connect, structural strength is good, long service life, relief hole is adopted to be connected with inlet passage by lumen passage in addition, the high pressure that the gasification of the liquid medium in lumen passage can be made when valve closing to produce is incorporated in inlet passage, high pressure in balance lumen passage, prevent valve body from bursting apart, ensure the Safety performance of valve, arrange in sealing material lower end draining board can prevent rainwater and condensed water be added dropwise on valve body freeze, cold can not be caused to run off, protection sealing material, prevent from sealing material inefficacy low temperature to be delivered to the health of handle position to the personnel of adjustment to cause damage, can in the subzero 196 degrees Celsius of uses of low temperature, long service life.

Accompanying drawing explanation

Fig. 1 is the structural representation of the utility model ultra-low temperature throttle valve.

In figure: 1, valve body, 2, long-neck valve gap, 3, valve is female, 4, sealing plug, 5, contiguous block, the 6, first set screw, the 7, second set screw, 8, import valve seat, 9, outlet valve seat, 10, inlet passage, 11, outlet passage, 12, lumen passage, 13, flashboard, 131, relief hole, 14, valve rod, 15, screw rod, 16, rotatable handle, 17, position-limited rack, 18, stuffing box packing, 19, graphite packing spacer ring, 20, sealing seat

21, hold-down grid, 22, pre-pressing bolt, 23, pre-pressing nut, 24, movable stand, 25, guide rod, 26, pilot hole, 27, limiting stopper, 28, link press span, 29, swivel nut, 30, draining board.

Embodiment

Particular content of the present utility model is described in detail below in conjunction with the drawings and specific embodiments.

As shown in Figure 1, ultra-low temperature throttle valve, comprise: valve body 1 and long-neck valve gap 2, be connected with the outside of long-neck valve gap 2 by valve female 3 inside the upper end of described valve body 1, sealing plug 4 is provided with between the valve body 1 and long-neck valve gap 2 of female 3 lower ends of described valve, contiguous block 5 is provided with between the valve body 1 and long-neck valve gap 2 of female 3 upper ends of described valve, described contiguous block 5 is connected with valve body 1 by the first set screw 6, described contiguous block 5 is connected with long-neck valve gap 2 by the second set screw 7, import valve seat 8 and outlet valve seat 9 is provided with in described valve body 1, inlet passage 10 is provided with in the side and import valve seat 8 of described valve body 1, outlet passage 11 is provided with in the opposite side and outlet valve seat 9 of described valve body 1, the lumen passage 12 be interconnected with inlet passage 10 and outlet passage 11 is provided with between described import valve seat 8 and outlet valve seat 9, the flashboard 13 cooperatively interacted with import valve seat 8 and outlet valve seat 9 is provided with in described lumen passage 12, be provided with the relief hole 131 be interconnected with inlet passage 10 and lumen passage 12 near the side of inlet passage 10 at described flashboard 13, described flashboard 13 is connected with one end of valve rod 14, the other end of described valve rod 14 stretches out long-neck valve gap 2 and is connected with screw rod 15, described screw rod 15 is connected with rotatable handle 16, position-limited rack 17 is fixedly installed outside the upper end of described long-neck valve gap 2, stuffing box packing 18 is provided with inside the upper end of described long-neck valve gap 2 and between valve rod 14, at long-neck valve gap 2 and the valve rod of described stuffing box packing 18 lower end

Graphite packing spacer ring 19 is provided with between 14, sealing seat 20 is provided with between the long-neck valve gap 2 and valve rod 14 of described graphite packing spacer ring 19 lower end, described stuffing box packing 18 upper end is provided with hold-down grid 21, the two ends of described hold-down grid 21 are connected with position-limited rack 17 with pre-pressing nut 23 respectively by pre-pressing bolt 22, the valve rod 14 of described hold-down grid 21 upper end is provided with movable stand 24, guide rod 25 is respectively arranged with in the lower end, both sides of described movable stand 24, described position-limited rack 17 is provided with the pilot hole 26 cooperatively interacted with guide rod 25, described guide rod 25 is connected with limiting stopper 27 through pilot hole 26, described position-limited rack 17 is provided with link press span 28, described link press span 28 is provided with the swivel nut 29 cooperatively interacted with screw rod 15, the long-neck valve gap 2 of described limiting stopper 27 lower end is provided with draining board 30.

When above-mentioned ultra-low temperature throttle valve is opened, rotate rotatable handle 16, rotatable handle 16 drives screw rod 15 to rotate in swivel nut 29, screw rod 15 rises and is with ovable valve stem 14 to rise, valve rod 14 drives flashboard 13 and movable stand 24 to rise, and movable stand 24 drives guide rod 25 to rise in pilot hole 26 until limiting stopper 27 and position-limited rack 17 offset, and now flashboard 13 is opened, inlet passage 10, lumen passage 12 and outlet passage 11 are interconnected, and liquid medium is carried by ultra-low temperature throttle valve.

When above-mentioned ultra-low temperature throttle valve is closed, rotate rotatable handle 16, rotatable handle 16 drives screw rod 15 to rotate in swivel nut 29, screw rod 15 rises and is with ovable valve stem 14 to decline, valve rod 14 drives flashboard 13 and movable stand 24 to decline, flashboard 13 cuts out, now lumen passage 12 one-tenth closed states, pressure increase after liquid gasification in lumen passage 12, liquid now after gasification enters in inlet passage 10 by relief hole 131, and because the medium temperature in inlet passage 10 is lower, high pressure air cognition liquefies again, pressure reduces, and avoids valve body to occur

Burst apart, eliminate safe hidden trouble.

Above-mentioned ultra-low temperature throttle valve, the height that valve rod upwards promotes can be controlled by valve stem spacing device, during guarantee valve open, flashboard can not contact with long-neck valve gap, ensure the use safety of flashboard, valve body is tightr by being connected inside and outside valve mother with between long-neck valve gap simultaneously, the dual connection of attachment screw adds the steadiness between valve body and long-neck valve gap again, it is firm to connect, structural strength is good, long service life, relief hole is adopted to be connected with inlet passage by lumen passage in addition, the high pressure that the gasification of the liquid medium in lumen passage can be made when valve closing to produce is incorporated in inlet passage, high pressure in balance lumen passage, prevent valve body from bursting apart, ensure the Safety performance of valve, arrange in sealing material lower end draining board can prevent rainwater and condensed water be added dropwise on valve body freeze, cold can not be caused to run off, protection sealing material, prevent from sealing material inefficacy low temperature to be delivered to the health of handle position to the personnel of adjustment to cause damage, can in the subzero 196 degrees Celsius of uses of low temperature, long service life.

Claims (1)

1. ultra-low temperature throttle valve, it is characterized in that: comprising: valve body (1) and long-neck valve gap (2), be connected with the outside of long-neck valve gap (2) by valve mother (3) inside the upper end of described valve body (1), sealing plug (4) is provided with between the valve body (1) and long-neck valve gap (2) of described valve mother (3) lower end, contiguous block (5) is provided with between the valve body (1) and long-neck valve gap (2) of described valve mother (3) upper end, described contiguous block (5) is connected with valve body (1) by the first set screw (6), described contiguous block (5) is connected with long-neck valve gap (2) by the second set screw (7), import valve seat (8) and outlet valve seat (9) is provided with in described valve body (1), inlet passage (10) is provided with in the side of described valve body (1) and import valve seat (8), outlet passage (11) is provided with in the opposite side and outlet valve seat (9) of described valve body (1), the lumen passage (12) be interconnected with inlet passage (10) and outlet passage (11) is provided with between described import valve seat (8) and outlet valve seat (9), the flashboard (13) cooperatively interacted with import valve seat (8) and outlet valve seat (9) is provided with in described lumen passage (12), at described flashboard (13), the side of inlet passage (10) is provided with the relief hole (131) be interconnected with inlet passage (10) and lumen passage (12), described flashboard (13) is connected with one end of valve rod (14), the other end of described valve rod (14) stretches out long-neck valve gap (2) and is connected with screw rod (15), described screw rod (15) is connected with rotatable handle (16), position-limited rack (17) is fixedly installed outside the upper end of described long-neck valve gap (2), stuffing box packing (18) is provided with inside the upper end of described long-neck valve gap (2) and between valve rod (14), graphite packing spacer ring (19) is provided with between the long-neck valve gap (2) and valve rod (14) of described stuffing box packing (18) lower end, sealing seat (20) is provided with between the long-neck valve gap (2) and valve rod (14) of described graphite packing spacer ring (19) lower end, described stuffing box packing (18) upper end is provided with hold-down grid (21), the two ends of described hold-down grid (21) are connected with position-limited rack (17) with pre-pressing nut (23) respectively by pre-pressing bolt (22), the valve rod (14) of described hold-down grid (21) upper end is provided with movable stand (24), guide rod (25) is respectively arranged with in the lower end, both sides of described movable stand (24), described position-limited rack (17) is provided with the pilot hole (26) cooperatively interacted with guide rod (25), described guide rod (25) is connected with limiting stopper (27) through pilot hole (26), described position-limited rack (17) is provided with link press span (28), described link press span (28) is provided with the swivel nut (29) cooperatively interacted with screw rod (15), the long-neck valve gap (2) of described limiting stopper (27) lower end is provided with draining board (30).