CN210290829U - Large-caliber nuclear grade M-type straight-through electric diaphragm valve - Google Patents
Large-caliber nuclear grade M-type straight-through electric diaphragm valve Download PDFInfo
- Publication number
- CN210290829U CN210290829U CN201920997328.3U CN201920997328U CN210290829U CN 210290829 U CN210290829 U CN 210290829U CN 201920997328 U CN201920997328 U CN 201920997328U CN 210290829 U CN210290829 U CN 210290829U
- Authority
- CN
- China
- Prior art keywords
- valve
- diaphragm
- connecting surface
- grade
- valve body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model relates to an electronic diaphragm valve of heavy-calibre nuclear level M type through type, including valve body, valve gap, valve rod, valve clack, electric actuator and diaphragm, the valve clack outside is equipped with the guide key along the axial, and the valve gap inboard is equipped with the guide way, and the guide key inlays in the guide way, and diaphragm outer fringe centre gripping is fixed in between valve body and the valve gap, and the middle part of diaphragm is equipped with the pressure relief groove. Compared with the prior art, the structure is simple and compact, the center of gravity is lower, and the shock resistance is good; the maintenance is convenient, and the disassembly and the assembly can be completed without special tools; the electric device and the bush can realize online disassembly and assembly while maintaining the valve position; the metal-to-metal connection sealing structure is adopted, so that the stress brought to the diaphragm by the outside is avoided, and the service life of the diaphragm is prolonged; the utility model discloses a be equipped with on the diaphragm and unload the problem that the solution "pressurization leads to unable opening when the valve is closed" that the pressure tank can be fine, reduced casting/machine tooling technology requirement, better realization batch production.
Description
Technical Field
The utility model belongs to the technical field of the diaphragm valve, a heavy-calibre nuclear level M type straight-through type diaphragm valve is related to.
Background
The diaphragm valve is an opening and closing device which takes a diaphragm as an opening and closing part, a hand wheel or an electric driving device drives a valve rod to do lifting motion along an axis, the driving part and a medium are in an isolation state, and the opening and closing device has the main function of connecting or cutting off the medium in a pipeline and controlling the medium to flow.
The diaphragm is a key part for opening, closing and sealing the diaphragm valve, and the quality of the diaphragm directly influences the sealing performance and the service life of the valve, so that the structure and the material of the rubber diaphragm play a crucial role in the sealing performance and the service life of the diaphragm valve.
In addition, when the diaphragm valve is opened, a large pressure difference is generated between the inlet end and the outlet end due to the pressurization of the fluid at the inlet end, and under the action of the pressure difference, the opening of the valve needs a large acting force to open, so that great difficulty is caused to the actual operation of the diaphragm valve. The conventional solution to this problem is to provide a pressure relief groove in the bottom of the valve body, and to reduce the pressure difference between the inlet and outlet ends of the valve by means of the pressure relief groove when the valve is opened, thereby reducing the resistance to opening the valve. However, the method has the problems that the notch of the valve body causes the stress concentration effect of fluid on the diaphragm, the service life of the diaphragm is shortened, and meanwhile, the requirement of a casting/machining process is improved, so that the rejection rate is increased.
At present, nuclear-grade diaphragm valves with the largest caliber (DN150) at home and abroad are all weir-type structures, and the design parameters of the nuclear-grade diaphragm valves are lower than those of straight-through structures, so that the nuclear-grade diaphragm valves cannot meet higher requirements of use sites.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a heavy-calibre nuclear grade M type through type electric diaphragm valve for overcoming the defects of the prior art.
The purpose of the utility model can be realized through the following technical scheme:
the large-caliber nuclear-grade M-shaped straight-through type electric diaphragm valve comprises a valve body, a valve cover, a valve rod, a valve clack, an electric device and a diaphragm, wherein the lower part of the valve body comprises an inlet end and an outlet end, the upper part of the valve body is connected with the lower part of the valve cover, the upper part of the valve cover is connected with the electric device, the valve rod is axially arranged in the middle of the valve cover, the upper part of the valve rod is in transmission connection with the electric device, a valve rod nut is fixedly connected with the upper part of the valve clack, an internal thread is arranged in the valve rod nut, an external thread is arranged outside the valve rod, the internal thread is matched with the external thread, the diaphragm is sleeved outside the lower part of the valve clack, a guide key is axially arranged outside the valve clack, a guide groove is arranged inside the valve cover, the guide, the middle part of the diaphragm is provided with a pressure relief groove.
The electric device drives the valve rod to rotate, so that the valve rod nut generates displacement, the valve rod nut further drives the valve clack to move, the valve clack is limited by the guide key and the guide groove, the valve clack only can generate displacement in the axial direction of the diaphragm valve, the valve clack moves and then drives the diaphragm, when the diaphragm is in complete contact with the bottom of the valve body, the diaphragm valve is in a closed state, and when the valve clack moves upwards, the opening degree of the diaphragm valve is gradually increased, so that the diaphragm valve is in an.
The valve rod adopts a hidden rod structure, has a large reduction degree in the aspects of space size, dead weight and the like compared with an exposed rod structure, and has a lower gravity center and good shock resistance.
The pressure relief groove is used for solving the problem that the valve cannot be opened due to pressurization when the valve is closed, and particularly, when the diaphragm valve is in a closed state, the pressure relief groove is completely covered at the bottom of the valve body under the influence of downward extrusion of the valve clack, and when the diaphragm valve is opened and the valve clack moves upwards, the pressure relief groove is communicated with the inlet end and the outlet end of the valve body, so that the pressure difference at two ends is reduced, and the opening of the diaphragm valve is facilitated.
Further, the valve body is connected with the valve cover through a first bolt, and the electric device is connected with the valve cover through a second bolt. The valve body and the valve cover and the electric device are detachably connected, so that the maintenance and the replacement of parts are facilitated.
Furthermore, the electric device is provided with a connecting claw, and the electric device is detachably connected with the valve rod through the connecting claw. The electric device is in transmission connection with the valve rod through the connecting claw.
As a preferable technical scheme, the connecting claw adopts a claw structure so as to adapt to valve rods with different sizes.
Furthermore, a bushing is arranged outside the valve rod, and the upper edge of the bushing is flush with the connecting surfaces of the electric device and the valve cover. In the field of valve application, the bushing is arranged in the valve cover to sleeve the valve rod, so that the leakage of the valve is reduced, and the sealing effect is achieved.
Further, the width of the guide key is consistent with that of the guide groove, and the guide key slides in the guide groove along the axial direction. When the guide key is located at the uppermost portion of the guide groove, the electrodynamic diaphragm valve is in a fully opened state, and when the guide key is located at the lowermost portion of the guide groove, the electrodynamic diaphragm valve is in a fully closed state.
Furthermore, a displacement detector is arranged in the guide groove and used for detecting the position of the guide key in the guide groove, an opening and closing indicator is arranged on the valve cover, and the displacement detector is electrically connected with the opening and closing indicator to display the opening degree of the diaphragm valve.
Furthermore, the diaphragm valve also comprises a limiting unit, wherein the limiting unit comprises a plurality of limiting holes arranged in the circumferential direction of the valve rod, a limiting through hole arranged on the valve cover and a limiting pin, and one end of the limiting pin penetrates through the limiting through hole and is inserted into the limiting hole.
The valve rod is limited to rotate through the limiting unit, so that the position of the valve clack is fixed, and the opening degree of the diaphragm valve is further fixed.
In addition, when the electric device and the bush are disassembled, the opening degree of the diaphragm valve can be fixed through the limiting unit, and the electric device and the bush can be independently assembled and disassembled on line.
Further, the coupling part of valve body and valve gap connect the face and locate the last connection face on the valve gap including locating the lower connection face on the valve body, last connection face include first go up connect the face and locate first go up connect the inboard second on connect the face, lower connection face include first connection face and locate first connection face inboard second under connect the face, the second under connect the face inboard and be equipped with the boss along circumference, first go up the radial width of connecting the face with first connection face radially on the width unanimous, the second under connect the face with the boss radially total width and the second on the width of connecting the face unanimous.
Furthermore, the diaphragm outer fringe be equipped with sealing rib, work as first go up connect the face with first when connecting the face down, sealing rib centre gripping be fixed in the second on connect the face and the second under connect between the face, the second on connect the face and the second under connect the difference in height of face and the thickness looks adaptation of sealing rib, the second on connect the face and the difference in height and the diaphragm thickness looks adaptation of boss.
The first lower connecting surface of the valve body and the first upper connecting surface of the valve cover are in metal-to-metal connection, and a diaphragm between the valve body and the valve cover is gradually compressed in the fastening process of the fastener; when the first lower connecting surface is directly contacted with the first upper connecting surface, the compression of the diaphragm is stopped and kept stable, and the designed compression amount during sealing is met. The structural design avoids the risk that the diaphragm is damaged by infinite compression; in the operation process of the diaphragm valve, additional stress generated by the outside cannot be transferred to the diaphragm, so that the service life of the diaphragm is greatly prolonged; the stability and the reliability of sealing between the valve body and the valve cover are ensured. Meanwhile, the assembling process is simplified, the condition that the compression amount of the diaphragm does not reach the standard is avoided, and the assembling efficiency is greatly improved.
Furthermore, the setting direction of the pressure relief groove is the same as the flowing direction of the fluid in the valve body, an annular bulge is arranged at the center of the bottom of the valve body, and the diameter of the annular bulge is matched with the length of the pressure relief groove.
The pressure relief groove on the diaphragm can well solve the problem that the large-caliber diaphragm valve fed back in the use field is easy to be pressurized and cannot be opened after being closed, so that the valve can be smoothly opened; in addition, the self-discharging pressure groove is transferred from the valve body to the diaphragm, so that the stress concentration of the notch of the valve body on the diaphragm can be eliminated, and the service life of the diaphragm is favorable. Meanwhile, the valve body without the pressure relief groove reduces the requirement of a casting/machining process, can reduce the rejection rate and better realizes batch production.
As a preferable technical scheme, the diameter of the annular protrusion is slightly larger than the length of the pressure relief groove, so that when the diaphragm valve is closed, the pressure relief groove completely covers the bottom of the valve body, no fluid leakage exists between the inlet end and the outlet end, and when the diaphragm valve is slightly opened, the pressure relief groove can communicate the inlet end and the outlet end, so that the pressure difference between the two ends is reduced, and the opening of the diaphragm valve is facilitated.
The utility model discloses an electronic diaphragm valve of heavy-calibre nuclear level M type through-type is applicable to the electronic diaphragm valve of DN150 heavy-calibre nuclear level M type through-type, and the circulation ability is strong, safe and reliable. The utility model discloses diaphragm valve adopts no filler upper seal (bush seal assembly), can prevent that the medium from leaking outward.
Compared with the prior art, the utility model has the characteristics of it is following:
1) simple structure, compactness: by adopting the hidden rod structure, the space size, the dead weight and the like are greatly reduced compared with the exposed rod structure, the gravity center is lower, and the shock resistance is good;
2) the maintenance is convenient: the whole machine has simple structure, and can be disassembled and assembled without special tools; the electric device and the bush realize online independent disassembly and assembly, and the valve position can be kept during disassembly and assembly;
3) metal-to-metal connection: the diaphragm is prevented from being stressed by the outside, the sealing reliability is improved, and the service life of the diaphragm is prolonged by adopting a metal-to-metal connection structure with controllable compression sealing;
4) self-pressing of the diaphragm: the diaphragm can well solve the problem that the diaphragm cannot be opened due to pressurization when the valve is closed, the stress concentration of the notch of the valve body on the diaphragm can be eliminated, the service life of the diaphragm is prolonged, and meanwhile, the requirement of a casting/machining process (the rejection rate can be reduced) is also reduced for the valve body without the pressure relief groove, so that batch production is better realized.
5) The electric device can realize online independent disassembly, and the valve rod nut is not designed together with the electric device, so that the valve position can be kept during disassembly.
Drawings
Fig. 1 is a schematic structural view of a large-caliber nuclear grade M-type straight-through electric diaphragm valve of the present invention;
FIG. 2 is a schematic structural view of a connecting portion of the valve body and the valve cover;
FIG. 3 is a cross-sectional view of a portion of the pressure relief groove in the diaphragm taken perpendicular to the direction of fluid flow;
FIG. 4 is a top view of a pressure relief groove portion in the diaphragm;
FIG. 5 is a schematic structural view of the positions of the pressure relief groove and the annular protrusion;
the notation in the figure is:
1-valve body, 2-valve gap, 3-guide key, 4-valve rod, 5-electric device, 6-connecting claw, 7-bush, 8-valve rod nut, 9-valve clack, 10-diaphragm, 11-sealing rib, 12-first upper connecting surface, 13-second upper connecting surface, 14-first lower connecting surface, 15-second lower connecting surface, 16-boss, 17-pressure relief groove, 18-annular bulge, 19-first bolt, 20-second bolt.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
Example (b):
as shown in figure 1, a 6, DN150 large-caliber nuclear grade M-shaped straight-through type electric diaphragm valve comprises a valve body 1 and a valve cover 2, valve rod 4, valve clack 9, electric actuator 5 and diaphragm 10, the lower part of valve body 1 includes entrance point and exit end, the upper portion of valve body 1 and the sub-unit connection of valve gap 2, the upper portion and the electric actuator 5 of valve gap 2 are connected, the middle part of valve gap 2 is equipped with valve rod 4 along the axial, the upper portion and the 5 transmission of electric actuator of valve rod 4 are connected, valve clack 9 upper portion fixedly connected with valve rod nut 8, be equipped with the internal thread in the valve rod nut 8, valve rod 4 is equipped with the external screw thread outward, internal thread and external screw thread looks adaptation, the lower part outside cover of valve clack 9 has diaphragm 10, the valve clack 9 outside is equipped with guide key 3 along the axial, valve gap 2 inboard is equipped with the guide way, guide key 3 inlays in the guide way, diaphragm 10 outer fringe centre gripping is fixed in between valve body.
The valve rod 4 of 5 drive valves of electric actuator is rotatory for valve rod nut 8 produces the displacement, and valve rod nut 8 and then drives valve clack 9 and remove, receives guide key 3 and guide way restriction, and valve clack 9 can only produce the displacement in the axial of diaphragm valve, and the removal of valve clack 9 and then drive diaphragm 10, when diaphragm 10 and 1 bottom of valve body contact completely, the diaphragm valve is in the closed condition, when valve clack 9 rebound, the aperture crescent of diaphragm valve makes the diaphragm valve be in the open mode.
The pressure relief groove 17 is used for solving the problem that the valve cannot be opened due to pressurization when the valve is closed, and particularly, when the diaphragm valve is in a closed state, the diaphragm valve is influenced by downward extrusion of the valve clack 9, the pressure relief groove 17 is completely covered at the bottom of the valve body 1, when the diaphragm valve is opened and the valve clack 9 moves upwards, the pressure relief groove 17 is communicated with the inlet end and the outlet end of the valve body 1, so that the pressure difference at the two ends is reduced, and the diaphragm valve is facilitated to be opened.
The valve body 1 is connected with the valve cover 2 through a first bolt 19, and the electric device 5 is connected with the valve cover 2 through a second bolt 20. The valve body 1 and the valve cover 2 and the electric device 5 are detachably connected, so that the components can be maintained and replaced conveniently.
Be equipped with on electric actuator 5 and connect claw 6, electric actuator 5 can dismantle with valve rod 4 through connecting claw 6 and be connected. The electric device 5 is in transmission connection with the valve rod 4 through a connecting claw 6.
The connecting claw 6 adopts a claw structure to adapt to valve rods 4 with different sizes.
The valve rod 4 is externally provided with a bush 7, and the upper edge of the bush 7 is flush with the connecting surfaces of the electric device 5 and the valve cover 2. In the field of valve application, the bushing is arranged in the valve cover to sleeve the valve rod, so that the leakage of the valve is reduced, and the sealing effect is achieved.
The guide key 3 is in accordance with the width of the guide groove, and the guide key slides in the guide groove along the axial direction. When the guide key 3 is located at the uppermost portion of the guide groove, the electrically operated diaphragm valve is in a fully opened state, and when the guide key 3 is located at the lowermost portion of the guide groove, the electrically operated diaphragm valve is in a fully closed state.
And a displacement detector is arranged in the guide groove and used for detecting the position of the guide key 3 in the guide groove, an opening and closing indicator is arranged on the valve cover 2, and the displacement detector is electrically connected with the opening and closing indicator so as to display the opening degree of the diaphragm valve.
The diaphragm valve further comprises a limiting unit, the limiting unit comprises a plurality of limiting holes arranged in the circumferential direction of the valve rod 4, limiting through holes arranged on the valve cover 2 and a limiting pin, and one end of the limiting pin penetrates through the limiting through holes to be inserted into the limiting holes.
The valve rod 4 is limited to rotate through the limiting unit, so that the position of the valve clack 9 is fixed, and the opening degree of the diaphragm valve is further fixed.
In addition, when the electric device 5 and the bush 7 are detached, the opening degree of the diaphragm valve can be fixed through the limiting unit, and the electric device 5 and the bush 7 can be detached independently on line.
As shown in fig. 2, the connection portion between the valve body 1 and the valve cap 2 includes a lower connection surface disposed on the valve body 1 and an upper connection surface disposed on the valve cap 2, the upper connection surface includes a first upper connection surface 12 and a second upper connection surface 13 disposed inside the first upper connection surface 12, the lower connection surface includes a first lower connection surface 14 and a second lower connection surface 15 disposed inside the first lower connection surface 14, a boss 16 is disposed inside the second lower connection surface 15 along the circumferential direction, the radial width of the first upper connection surface 12 is consistent with the radial width of the first lower connection surface 14, and the total radial width of the second lower connection surface 15 and the boss 16 is consistent with the width of the second upper connection surface 13.
The outer edge of the diaphragm 10 is provided with a sealing rib 11, when the first upper connecting surface 12 is connected with the first lower connecting surface 14, the sealing rib 11 is clamped and fixed between the second upper connecting surface 13 and the second lower connecting surface 15, the height difference between the second upper connecting surface 13 and the second lower connecting surface 15 is matched with the thickness of the sealing rib 11, and the height difference between the second upper connecting surface 13 and the boss 16 is matched with the thickness of the diaphragm 10.
The first lower connecting surface 14 of the valve body 1 and the first upper connecting surface 12 of the valve cover 2 are in metal-to-metal connection, and the diaphragm 10 between the valve body 1 and the valve cover 2 is gradually compressed in the fastening process of a fastener; after the first lower connecting surface 14 is in direct contact with the first upper connecting surface 12, the compression of the diaphragm 10 is stopped and remains stable, satisfying the designed amount of compression at the time of sealing. This structural design avoids the risk of the diaphragm 10 being damaged by infinite compression; in the operation process of the diaphragm valve, additional stress generated by the outside cannot be transferred to the diaphragm 10, so that the service life of the diaphragm 10 is greatly prolonged; the stability and the reliability of the sealing between the valve body 1 and the valve cover 2 are ensured. Meanwhile, the assembling process is simplified, the condition that the compression amount of the diaphragm does not reach the standard is avoided, and the assembling efficiency is greatly improved.
The setting direction of the pressure relief groove 17 is the same as the flowing direction of the fluid in the valve body 1, the center of the bottom of the valve body 1 is provided with an annular bulge 18 shown in figure 5, and the diameter of the annular bulge 18 is matched with the length of the pressure relief groove 17.
The pressure relief groove 17 on the diaphragm 10 can well solve the problem that the large-caliber diaphragm valve fed back in the use field is easy to be pressurized and cannot be opened after being closed, so that the valve can be smoothly opened; in addition, the stress concentration of the valve body notch on the diaphragm 10 can be eliminated by transferring the self-decompression groove from the valve body 1 to the diaphragm 10, which is beneficial to the service life of the diaphragm. Meanwhile, the valve body without the pressure relief groove reduces the requirement of a casting/machining process, can reduce the rejection rate and better realizes batch production.
The diameter of the annular protrusion 18 shown in fig. 5 is slightly larger than the length of the pressure relief groove 17, so that when the diaphragm valve is closed, the pressure relief groove 17 completely covers the bottom of the valve body 1, so that no fluid leaks between the inlet end and the outlet end, and when the diaphragm valve is slightly opened, the pressure relief groove 17 can communicate the inlet end and the outlet end, so that the pressure difference between the two ends is reduced, and the opening of the diaphragm valve is facilitated.
At present, nuclear-grade diaphragm valves with the largest caliber (DN150) at home and abroad are all weir-type structures, and the design parameters of the nuclear-grade diaphragm valves are lower than those of straight-through structures, so that the nuclear-grade diaphragm valves cannot meet higher requirements of use sites. The DN150 large-caliber nuclear grade M-type straight-through electric diaphragm valve researched and developed by the application is strong in circulation capacity, safe and reliable, and successfully passes the expert review, namely, the diaphragm valve is applied to the second-stage (Hualong I) nuclear power project of urban harbor defense.
The embodiments described above are intended to facilitate the understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention according to the disclosure of the present invention.
Claims (10)
1. The large-caliber nuclear-grade M-shaped through type electric diaphragm valve comprises a valve body (1), a valve cover (2), a valve rod (4), a valve clack (9), an electric device (5) and a diaphragm (10), wherein the lower part of the valve body (1) comprises an inlet end and an outlet end, the upper part of the valve body (1) is connected with the lower part of the valve cover (2), the upper part of the valve cover (2) is connected with the electric device (5), the valve rod (4) is axially arranged in the middle of the valve cover (2), the upper part of the valve rod (4) is in transmission connection with the electric device (5), a valve rod nut (8) is fixedly connected to the upper part of the valve clack (9), an internal thread is arranged in the valve rod nut (8), an external thread is arranged outside the valve rod (4), the internal thread is matched with the external thread, and the diaphragm (10) is sleeved on the outer side, the valve is characterized in that a guide key (3) is arranged on the outer side of the valve clack (9) along the axial direction, a guide groove is formed in the inner side of the valve cover (2), the guide key (3) is embedded in the guide groove, the outer edge of the diaphragm (10) is clamped and fixed between the valve body (1) and the valve cover (2), and a pressure relief groove (17) is formed in the middle of the diaphragm (10).
2. The large-caliber nuclear-grade M-type straight-through diaphragm valve according to claim 1, wherein the valve body (1) is connected with the valve cover (2) through a first bolt (19), and the electric device (5) is connected with the valve cover (2) through a second bolt (20).
3. The large-caliber nuclear-grade M-type straight-through type electric diaphragm valve according to claim 1, wherein a connecting claw (6) is arranged on the electric device (5), and the electric device (5) is detachably connected with the valve rod (4) through the connecting claw (6).
4. The large-caliber nuclear-grade M-type straight-through diaphragm valve according to claim 3, wherein a bushing (7) is arranged outside the valve rod (4), and the upper edge of the bushing (7) is flush with the connecting surfaces of the electric device (5) and the valve cover (2).
5. The large caliber nuclear grade M-type straight through electrically operated diaphragm valve according to claim 1, wherein the guide key (3) is in conformity with the width of the guide groove in which the guide key slides in the axial direction.
6. The large-caliber nuclear-grade M-type straight-through diaphragm valve according to claim 5, wherein a displacement detector is arranged in the guide groove, an opening and closing indicator is arranged on the valve cover (2), and the displacement detector is electrically connected with the opening and closing indicator.
7. The large-caliber nuclear-grade M-type straight-through diaphragm valve according to claim 1, further comprising a limiting unit, wherein the limiting unit comprises a plurality of limiting holes arranged in the circumferential direction of the valve rod (4), a limiting through hole arranged on the valve cover (2) and a limiting pin, and one end of the limiting pin penetrates through the limiting through hole and is inserted into the limiting hole.
8. The large caliber nuclear grade M-type straight-through electrically operated diaphragm valve of claim 1, the connecting part of the valve body (1) and the valve cover (2) comprises a lower connecting surface arranged on the valve body (1) and an upper connecting surface arranged on the valve cover (2), the upper connecting surface comprises a first upper connecting surface (12) and a second upper connecting surface (13) arranged on the inner side of the first upper connecting surface (12), the lower connecting surface comprises a first lower connecting surface (14) and a second lower connecting surface (15) arranged at the inner side of the first lower connecting surface (14), a boss (16) is arranged on the inner side of the second lower connecting surface (15) along the circumferential direction, the radial width of the first upper connecting surface (12) is consistent with the radial width of the first lower connecting surface (14), the total radial width of the second lower connecting surface (15) and the boss (16) is consistent with the width of the second upper connecting surface (13).
9. The large-caliber nuclear-grade M-type straight-through diaphragm valve according to claim 8, wherein the outer edge of the diaphragm (10) is provided with a sealing rib (11), when the first upper connecting surface (12) is connected with the first lower connecting surface (14), the sealing rib (11) is clamped and fixed between the second upper connecting surface (13) and the second lower connecting surface (15), the height difference between the second upper connecting surface (13) and the second lower connecting surface (15) is adapted to the thickness of the sealing rib (11), and the height difference between the second upper connecting surface (13) and the boss (16) is adapted to the thickness of the diaphragm (10).
10. The large-caliber nuclear-grade M-type straight-through diaphragm valve according to claim 1, wherein the pressure relief groove (17) is arranged in the same direction as the flow direction of fluid in the valve body (1), an annular protrusion (18) is arranged at the center of the bottom of the valve body (1), and the diameter of the annular protrusion (18) is matched with the length of the pressure relief groove (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920997328.3U CN210290829U (en) | 2019-06-28 | 2019-06-28 | Large-caliber nuclear grade M-type straight-through electric diaphragm valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920997328.3U CN210290829U (en) | 2019-06-28 | 2019-06-28 | Large-caliber nuclear grade M-type straight-through electric diaphragm valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210290829U true CN210290829U (en) | 2020-04-10 |
Family
ID=70099530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920997328.3U Active CN210290829U (en) | 2019-06-28 | 2019-06-28 | Large-caliber nuclear grade M-type straight-through electric diaphragm valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210290829U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110185816A (en) * | 2019-06-28 | 2019-08-30 | 上海阀门五厂有限公司 | Heavy caliber nuclear leve M type through type electric diaphragm valve |
| CN113431920A (en) * | 2021-07-16 | 2021-09-24 | 齐力控股集团有限公司 | Diaphragm valve |
-
2019
- 2019-06-28 CN CN201920997328.3U patent/CN210290829U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110185816A (en) * | 2019-06-28 | 2019-08-30 | 上海阀门五厂有限公司 | Heavy caliber nuclear leve M type through type electric diaphragm valve |
| CN113431920A (en) * | 2021-07-16 | 2021-09-24 | 齐力控股集团有限公司 | Diaphragm valve |
| CN113431920B (en) * | 2021-07-16 | 2022-06-17 | 齐力控股集团有限公司 | Diaphragm valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20230138582A1 (en) | Cover, fluid end and plunger pump | |
| CN210290829U (en) | Large-caliber nuclear grade M-type straight-through electric diaphragm valve | |
| CN201284835Y (en) | Double-valve core balancing type large diameter supercritical parameter break valve | |
| CN111795171B (en) | Long service life ball valve | |
| CN104913080A (en) | Non-wear boosting ball valve | |
| CN108105420A (en) | A kind of high-pressure hydraulic pump discharge control valve | |
| CN203335872U (en) | Secondary sealing stop valve | |
| CN204878818U (en) | Telescopic sphere rotates case and does not have wearing and tearing pressure boost ball valve | |
| CN208474540U (en) | A kind of longitudinal single weld seam all-welded ball valve of spherical | |
| CN216343985U (en) | Stop valve with good sealing performance | |
| CN113280160B (en) | Detachable axial-flow check valve normally open structure | |
| CN212986368U (en) | Oil pipe joint with explosion-proof function | |
| CN115289169B (en) | Detachable variable damping inflatable hydraulic shock absorber | |
| CN102434266B (en) | Connected pneumatic film type clutch for fan | |
| CN201535359U (en) | Energy-saving balance valve | |
| CN219673404U (en) | Nuclear-grade pneumatic stop check valve | |
| CN111022667A (en) | High-performance single-clack double-seal pneumatic regulating valve for nuclear power | |
| CN111156279A (en) | Hydro-pneumatic spring inflating tool | |
| CN202418599U (en) | Pressure balancing check valve | |
| CN104747743A (en) | Low and medium-pressure pneumatic balanced stop valve | |
| CN214093168U (en) | Integrated double-arranged check valve | |
| CN219549744U (en) | Quick-dismantling angle type manual pneumatic program control valve | |
| CN218377953U (en) | Connect two ball valves of making of stable form | |
| CN210290770U (en) | Axial flow valve | |
| CN220396498U (en) | Actuating mechanism for regulating valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |