CN210034485U - Ultrahigh-temperature gate valve - Google Patents
Ultrahigh-temperature gate valve Download PDFInfo
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- CN210034485U CN210034485U CN201920877810.3U CN201920877810U CN210034485U CN 210034485 U CN210034485 U CN 210034485U CN 201920877810 U CN201920877810 U CN 201920877810U CN 210034485 U CN210034485 U CN 210034485U
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Abstract
The utility model relates to an ultra-high temperature gate valve, which comprises a valve body, a valve seat, a flashboard, a valve rod, a valve cover, a bracket and a hand wheel; the valve rod nut is characterized in that an extension rod is arranged between the valve rod nut and the hand wheel, an extension rod sleeve is arranged outside the extension rod, an annular cavity is arranged between the inner wall of the extension rod sleeve and the outer circumferential surface of the extension rod, the annular cavity is at least divided into a lower annular cavity and an upper annular cavity along the axial direction of the valve rod, a plurality of air cooling windows are formed in the circumferential direction of the extension rod sleeve outside the lower annular cavity, and a circulating water cooling device is arranged on the extension rod sleeve outside the upper annular cavity.
Description
Technical Field
The utility model belongs to the valve field especially relates to a gate valve. The utility model is suitable for a high temperature, ultra-high temperature medium operating mode.
Background
The gate valve generally comprises a valve body, a valve seat, a gate plate, a valve rod, a valve cover, a hand wheel, a sealing element and a mounting part, wherein the gate plate and the valve seat are mutually matched to close or open a pipeline medium. In order to prevent the temperature of a high-temperature medium from being transmitted to the hand wheel, the lengthened valve cover and the radiating fins are generally adopted for radiating, however, when the temperature of the medium exceeds 500 ℃, the effect of the radiating structure is poor, the temperature transmitted to the hand wheel is high, and the opening and closing operation of the hand wheel is influenced.
Disclosure of Invention
The utility model discloses shortcoming to prior art exists provides an ultra-temperature gate valve of operation hand wheel that the radiating effect is good, can be convenient, safe.
The technical scheme of the utility model comprises a valve body, a valve seat, a flashboard, a valve rod, a valve cover, a bracket, a handwheel, a sealing element and a mounting element, wherein the flashboard and the valve seat are provided with mutually matched metal sealing surfaces, the lower end of the valve rod is connected with the flashboard, the upper end of the valve rod is in threaded connection with a valve rod nut on the bracket, and a guiding device is arranged between the bracket and the valve rod; the valve rod nut is fixedly connected with the valve rod nut, a center hole with the diameter larger than the outer diameter of the upper end of the valve rod is formed in the center of the lower end of the extension rod, the axial length of the center hole is larger than the inner diameter of a sealing surface of a valve seat, and the upper end of the extension rod is fixedly connected with the hand wheel; a lengthening rod sleeve is arranged outside the lengthening rod, the lower end of the lengthening rod sleeve is fixedly arranged on the support, an annular cavity is arranged between the inner circular wall of the lengthening rod sleeve and the outer circular surface of the lengthening rod, and the annular cavity is at least divided into two sections along the axial direction of the valve rod; a lower annular cavity is arranged close to the side of the bracket, and a plurality of air cooling windows are arranged in the circumferential direction of the lengthening rod sleeve outside the lower annular cavity; the annular cavity on the lower annular cavity upside links to each other, is equipped with the isolation sealing ring between last annular cavity and the lower annular cavity, should keep apart and adopt welded seal to connect between the outer anchor ring and the extension bar cover inner circular wall, and the outer anchor ring of annular cavity and extension bar outer circular surface move the sealed cooperation, and the extension bar that goes up the annular cavity outside is sheathe in and is equipped with the circulating water cooling device, is equipped with axial positioning device between extension bar cover and the extension bar.
Preferably, the upper annular cavity comprises a first cavity and a second cavity, a sealing ring is arranged between the first cavity and the second cavity, the outer annular surface of the sealing ring is connected with the inner circular wall of the extension rod sleeve in a welding and sealing mode, and the inner annular surface is in dynamic sealing fit with the outer circular surface of the extension rod; the circulating water cooling device is arranged on the extension bar sleeve outside the first cavity connected with the lower annular cavity; a plurality of air cooling windows are arranged in the circumferential direction of the extension rod sleeve outside the second cavity.
The beneficial effects of the utility model are that set up air cooling unit and water cooling plant between support and hand wheel, effectively keep apart medium high temperature and conduct the hand wheel, its radiating effect is good, can make things convenient for, safe operation hand wheel.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The ultrahigh-temperature gate valve shown in fig. 1 comprises a valve body 1, a valve seat 3, a gate plate 2, a valve rod 4, a valve cover 5, a support 8, a hand wheel 15, a sealing element and a mounting element, wherein the gate plate 2 and the valve seat 3 are provided with metal sealing surfaces which are matched with each other, the lower end of the valve rod 4 is connected with the gate plate 2, the upper end of the valve rod is in threaded connection with a valve rod nut 9 on the support 8, a bearing 10 is arranged between the valve rod nut 9 and the support 8, a guide device is arranged between the support 8 and the valve rod 4 and used for limiting the rotation of the valve rod 4, a packing 6 is arranged between the valve rod 4 and the valve cover 5, the packing 6 is tightly pressed and mounted by a gland 7, the sealing surface of; the valve is characterized in that an extension bar 12 is arranged between a valve rod nut 9 and a hand wheel 15, the lower end of the extension bar 12 is fixedly connected with the valve rod nut 9, the center of the lower end of the extension bar 12 is provided with a central hole with the diameter larger than the outer diameter of the upper end of a valve rod 4, the axial length of the central hole is larger than the inner diameter of a sealing surface of a valve seat 3, the valve rod 4 can be hidden in the central hole when a valve clack 2 is opened, and the upper end of the extension bar 12; a lengthening rod sleeve 11 is arranged outside the lengthening rod 12, the lower end of the lengthening rod sleeve 11 is fixedly arranged on the support 8, the bearing 10 is axially pressed between the support 8 and the valve rod nut 19, an annular cavity 13 is arranged between the inner circular wall of the lengthening rod sleeve 11 and the outer circular surface of the lengthening rod 12, and the annular cavity 13 is at least divided into two sections along the axial direction of the valve rod 4; a lower annular cavity is arranged at the side close to the bracket 8, a plurality of air cooling windows are arranged in the circumferential direction of the lengthening rod sleeve 11 at the outer side of the lower annular cavity, and natural air cooling heat dissipation is performed to form a first heat insulation device; the upper annular cavity is connected with the upper annular cavity at the upper side of the lower annular cavity, an isolation sealing ring is arranged between the upper annular cavity and the lower annular cavity, the outer annular surface of the isolation sealing ring is connected with the inner circular wall of the extension rod sleeve 11 in a welding and sealing mode, the inner annular surface is in dynamic sealing fit with the outer circular surface of the extension rod 12, a circulating water cooling device is arranged on the extension rod sleeve 11 outside the upper annular cavity, a second heat insulation device is formed by circulating water heat dissipation, the isolation sealing ring prevents a large amount of circulating water from leaking, and has the function of positioning the extension rod 12, and the requirement on the sealing performance between the isolation sealing ring and. An axial positioning device 14 is arranged between the extension rod sleeve 11 and the extension rod 12 to prevent the extension rod 12 from moving axially when the hand wheel 15 rotates.
The upper annular cavity comprises a first cavity and a second cavity, a sealing ring is arranged between the first cavity and the second cavity, the outer annular surface of the sealing ring is connected with the inner circular wall of the extension rod sleeve 11 in a welding and sealing mode, and the inner annular surface of the sealing ring is in dynamic sealing fit with the outer annular surface of the extension rod 12; the circulating water cooling device is arranged on the lengthening rod sleeve 11 outside the first cavity connected with the lower annular cavity; a plurality of air cooling windows are formed in the circumferential direction of the extension rod sleeve 11 on the outer side of the second cavity, and natural air cooling heat dissipation is performed to form a third heat insulation device. The sealing ring not only prevents a large amount of circulating water from leaking through the second cavity, but also has the function of positioning the extension rod 12, and the requirement on the sealing performance between the sealing ring and the extension rod 12 is not high.
Claims (2)
1. An ultrahigh-temperature gate valve comprises a valve body (1), a valve seat (3), a gate plate (2), a valve rod (4), a valve cover (5), a support (8), a hand wheel (15), a sealing element and a mounting part, wherein the gate plate (2) and the valve seat (3) are provided with metal sealing surfaces which are matched with each other, the lower end of the valve rod (4) is connected with the gate plate (2), the upper end of the valve rod is in threaded connection with a valve rod nut (9) on the support (8), and a guide device is arranged between the support (8) and the valve rod (4); the valve rod nut is characterized in that an extension bar (12) is arranged between the valve rod nut (9) and the hand wheel (15), the lower end of the extension bar (12) is fixedly connected with the valve rod nut (9), the center of the lower end of the extension bar (12) is provided with a central hole with the diameter larger than the outer diameter of the upper end of the valve rod (4), the axial length of the central hole is larger than the inner diameter of the sealing surface of the valve seat (3), and the upper end of the extension bar (12) is fixedly connected with the hand wheel; a lengthening rod sleeve (11) is arranged outside the lengthening rod (12), the lower end of the lengthening rod sleeve (11) is fixedly arranged on the support (8), an annular cavity (13) is arranged between the inner circular wall of the lengthening rod sleeve (11) and the outer circular surface of the lengthening rod (12), and the annular cavity (13) is at least divided into two sections along the axial direction of the valve rod (4); a lower annular cavity is arranged at the side close to the bracket (8), and a plurality of air cooling windows are arranged in the circumferential direction of the lengthening rod sleeve (11) at the outer side of the lower annular cavity; the upper annular cavity is connected with the upper annular cavity at the upper side of the lower annular cavity, the isolation sealing ring is arranged between the upper annular cavity and the lower annular cavity, the outer annular surface of the isolation sealing ring is connected with the inner circular wall of the extension rod sleeve (11) in a welding and sealing mode, the inner annular surface is matched with the outer circular surface of the extension rod sleeve (12) in a dynamic sealing mode, a circulating water cooling device is arranged on the extension rod sleeve (11) outside the upper annular cavity, and an axial positioning device is arranged between the extension rod sleeve (11) and the extension rod sleeve (12).
2. The ultra-high temperature gate valve according to claim 1, wherein the upper annular cavity comprises a first cavity and a second cavity, a sealing ring is arranged between the first cavity and the second cavity, the outer annular surface of the sealing ring is connected with the inner annular wall of the extension rod sleeve (11) in a welding and sealing mode, and the inner annular surface is in dynamic sealing fit with the outer annular surface of the extension rod (12); the circulating water cooling device is arranged on a lengthening rod sleeve (11) outside the first cavity connected with the lower annular cavity; a plurality of air cooling windows are arranged in the circumferential direction of the extension rod sleeve (11) outside the second cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920877810.3U CN210034485U (en) | 2019-06-12 | 2019-06-12 | Ultrahigh-temperature gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920877810.3U CN210034485U (en) | 2019-06-12 | 2019-06-12 | Ultrahigh-temperature gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210034485U true CN210034485U (en) | 2020-02-07 |
Family
ID=69347770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920877810.3U Active CN210034485U (en) | 2019-06-12 | 2019-06-12 | Ultrahigh-temperature gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210034485U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU201864U1 (en) * | 2020-10-01 | 2021-01-15 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Петрозаводский государственный университет" | WEDGE VALVE |
-
2019
- 2019-06-12 CN CN201920877810.3U patent/CN210034485U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU201864U1 (en) * | 2020-10-01 | 2021-01-15 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Петрозаводский государственный университет" | WEDGE VALVE |
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