CN111173970A - Non-return type quick-cut-off hydrogen injection valve - Google Patents
Non-return type quick-cut-off hydrogen injection valve Download PDFInfo
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- CN111173970A CN111173970A CN202010025826.9A CN202010025826A CN111173970A CN 111173970 A CN111173970 A CN 111173970A CN 202010025826 A CN202010025826 A CN 202010025826A CN 111173970 A CN111173970 A CN 111173970A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/18—Check valves with actuating mechanism; Combined check valves and actuated valves
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Abstract
The invention discloses a check type quick-closing hydrogen injection valve, which belongs to the technical field of industrial valves and comprises a first valve body, a check valve, a second valve body, a main valve rod assembly, a valve cover, a sealing connecting assembly and a driving device, wherein the first valve body, the second valve body, the valve cover, the sealing connecting assembly and the driving device are sequentially connected, a main valve cavity is formed between the second valve body and the valve cover, the main valve rod assembly used for controlling the on-off of a medium circulation path is arranged in the main valve cavity, and the check valve used for preventing medium backflow is arranged at the joint of the first valve body and the second. The invention adopts the design of the check valve clack, the main valve clack of the check valve and the flow channel which are coaxially integrated, and has the advantages of simple structure, the check valve can play a role of isolating liquid metal sodium or hydrogen medium in the flow channel, the check valve can prevent the liquid metal sodium medium from flowing back to the valve cavity, the valve body I is connected with the hydrogen injection pipeline, the inlet connecting pipe is connected with the hydrogen source pipeline, the valve rod is driven by the driving device, the valve is quickly opened or closed, the installation space is saved, and the operation is convenient.
Description
Technical Field
The invention belongs to the technical field of industrial valves, and particularly relates to a check type rapid shutoff hydrogen injection valve which has a quick-closing action check function and can realize medium injection.
Background
The hydrogen injection valve is a key device in a sodium water reaction research test system, and the hydrogen injection valve, a main loop, a purification loop and an argon loop form the system together. The existing hydrogen injection valve adopts the design of a large valve seat diameter, so that the solid sodium after condensation is removed, a hand wheel is not designed to be used as a driving part, and a movable wrench is used as the driving part.
The movable spanner is used as a driving piece, the closing speed of the valve is very low, a valve rod nut needs to be screwed for 5 circles, the field operation is inconvenient, and the movable spanner needs to be specially equipped for standby; the design of the diameter of the large valve seat leads the flow area of the valve seat to be too large, the pressure of the valve cavity is reduced after the hydrogen injection operation is finished, the liquid sodium metal of the pipeline system flows back in a large amount, the closing speed of the wrench is low, and the flow rate of the liquid sodium metal of the pipeline system is further increased.
After the hydrogen is finished, the liquid metal sodium is condensed into a solid state, and when the valve is opened next time, the solid sodium can damage the corrugated pipe assembly and cause the blockage of the flow channel. As the metal sodium is very active metal, once the corrugated pipe assembly is damaged, the leakage can occur, sodium fire accidents are caused by extremely easy combustion, and the personal safety and the equipment safety of a test site are seriously influenced.
Disclosure of Invention
In view of the above, the present invention provides a non-return type fast shutoff hydrogen injection valve, so as to solve the defects of the prior art, and the hydrogen injection valve can effectively prevent the liquid metal sodium in the pipeline system from flowing back in time, can isolate the pipeline system from the hydrogen gas source system in time, and is convenient for field operation.
The technical scheme of the invention is as follows:
a non-return type quick-shut-off hydrogen injection valve comprises a valve body I, a non-return valve, a valve body II, a main valve rod assembly, a valve cover, a sealing connection assembly and a driving device;
the valve comprises a first valve body, a second valve body, a valve cover, a sealing connecting assembly and a driving device which are sequentially connected, a main valve cavity is formed between the second valve body and the valve cover, a main valve rod assembly used for controlling the on-off of a medium circulation path is arranged in the main valve cavity, and a check valve used for preventing medium from flowing backwards is arranged at the joint of the first valve body and the second valve body;
the main valve rod assembly comprises a main valve flap, a valve rod and a corrugated pipe assembly, wherein one end of the valve rod is connected with the main valve flap, the corrugated pipe assembly is sleeved on the middle section of the valve rod, one end of the corrugated pipe assembly is fixed with the middle section of the valve rod, and the other end of the corrugated pipe assembly is fixed with the valve cover;
the sealing connection assembly comprises a valve rod nut, a bearing gland and an anti-rotation cover; the valve rod nut comprises a cylinder, a ring body and a flange which are coaxially and fixedly connected in sequence, and a connecting structure is arranged at one end of the cylinder close to the ring body; the anti-rotation cover is sleeved and fixed at one end of the valve rod, which is far away from the main valve flap, and is fixed with the valve cover, a valve rod nut is sleeved outside the anti-rotation cover, a connecting structure on the valve rod nut is connected with one end of the valve rod, which is far away from the main valve flap, and one end of the valve rod nut, which is far away from the valve body II, is connected with a driving device; the valve rod nut is characterized in that a bearing gland is sleeved on the annular body of the valve rod nut and fixedly connected with the valve cover, a cavity is formed between the bearing gland and the valve cover, a flange of the valve rod nut is arranged in the cavity, and bearings are arranged on two sides of the flange respectively.
Preferably, the check valve includes check valve chamber, check valve backpressure spring and check valve clack, the check valve chamber is seted up in the junction of valve body one and valve body two, be provided with the check valve clack in the check valve chamber, check valve chamber and check valve clack clearance fit, the check valve clack can block medium circulation route when being close to the one end of valve body two and compressing tightly on the check valve chamber, the one end cover that the check valve clack deviates from valve body two is equipped with check valve backpressure spring.
Preferably, an inlet pipe is arranged in the middle section of the second valve body and is communicated with the main valve cavity.
Preferably, a T-shaped head is arranged at one end, connected with the main valve clack, of the valve rod, a T-shaped groove is formed in the main valve clack, and the T-shaped groove is connected with the T-shaped head in a matched mode.
Preferably, the drive means is a hand wheel.
Preferably, the driving device comprises a motor, an output shaft of the motor is connected with a sleeve, and the sleeve and one end of the valve rod nut, which deviates from the second valve body, are fixedly connected in a coaxial mode.
Preferably, the first valve body, the second valve body and the valve cover are coaxial.
Compared with the prior art, the non-return type quick-closing hydrogen injection valve disclosed by the invention adopts the design that the valve clack of the non-return valve, the main valve clack of the non-return valve and the flow channel are coaxially integrated, and has the advantages that the structure is simple, the non-return valve can play a role in isolating liquid metal sodium or hydrogen medium in the flow channel, the non-return valve can prevent the liquid metal sodium medium from flowing back to the valve cavity, the first valve body is connected with a hydrogen injection pipeline, the inlet connecting pipe is connected with a hydrogen source pipeline, the valve rod is driven by a hand wheel, the valve is quickly opened or closed, the installation space is saved, the.
Drawings
FIG. 1 is a schematic structural view of a closed state of the present invention;
FIG. 2 is a schematic view of the hydrogen injection state according to the present invention;
FIG. 3 is a schematic view showing the hydrogen injection completion state according to the present invention.
Reference numerals:
1. a first valve body; 2. a check valve back pressure spring; 3. a check valve flap; 4. a second valve body; 5. a main valve flap; 6. a valve stem; 7. a bellows assembly; 8. an inlet connection pipe; 9. a valve cover; 10. a bearing; 11. a valve stem nut; 12. a rotation prevention cover; 13. a hand wheel; 14. a first key; 15. a second key; 16. a screw; 17. and bearing pressing covers.
Detailed Description
The invention provides a non-return type quick-closing hydrogen injection valve, which is described below by combining with the structural schematic diagrams of figures 1 to 3.
Example 1
As shown in fig. 1 to 3, a check type quick-shut hydrogen injection valve includes a first valve body 1, a check valve, a second valve body 4, a main valve rod assembly, a valve cover 9, a sealing connection assembly and a driving device;
the first valve body 1, the second valve body 4 and the valve cover 9 are circular and coaxially arranged, and the flow passages on the first valve body 1 and the second valve body 4 are coaxially arranged.
The valve body I1, the valve body II 4, the valve cover 9, the sealing connection assembly and the driving device are sequentially connected, a main valve cavity is formed between the valve body II 4 and the valve cover 9, a main valve rod assembly used for controlling the on-off of a medium circulation path is arranged in the main valve cavity, and a check valve used for preventing medium backflow is arranged at the joint of the valve body I1 and the valve body II 4.
The main valve rod component comprises a main valve clack 5, a valve rod 6 and a bellows component 7, one end of the valve rod 6 is connected with the main valve clack 5, the bellows component 7 is sleeved on the middle section of the valve rod 6, one end of the bellows component 7 is fixed with the middle section of the valve rod 6, and the other end of the bellows component 7 is fixed with a valve cover 9.
The sealing connection assembly comprises a valve rod nut 11, a bearing 10, a bearing gland 17 and an anti-rotation cover 12; the valve rod nut 11 comprises a cylinder, a ring body and a flange which are coaxially and fixedly connected in sequence, and a connecting structure is arranged at one end of the cylinder close to the ring body; the anti-rotation cover 12 is sleeved and fixed at one end of the valve rod 6, which is far away from the main valve clack 5, the anti-rotation cover 12 is fixed with the valve cover 9, a valve rod nut 11 is sleeved outside the anti-rotation cover 12, a connecting structure on the valve rod nut 11 is connected with one end of the valve rod 6, which is far away from the main valve clack 5, and one end of the valve rod nut 11, which is far away from the valve body II 4, is connected; the annular body of the valve rod nut 11 is sleeved with a bearing gland 17, the bearing gland 17 is fixedly connected with the valve cover 9, a cavity is formed between the bearing gland 17 and the valve cover 9, a flange of the valve rod nut 11 is arranged in the cavity, and bearings 10 are respectively arranged on two sides of the flange.
Further, the check valve includes check valve chamber, check valve backpressure spring 2 and check valve clack 3, and the check valve chamber is seted up in the junction of valve body one 1 and valve body two 4, is provided with check valve clack 3 in the check valve chamber, and the check valve chamber can block medium circulation route with check valve clack 3 clearance fit, when the one end that check valve clack 3 is close to valve body two 4 compresses tightly on the check valve chamber, and the one end cover that check valve clack 3 deviates from valve body two 4 is equipped with check valve backpressure spring 2.
Further, an inlet pipe 8 is arranged in the middle section of the second valve body 4, and the inlet pipe 8 is communicated with the main valve cavity.
Further, a T-shaped head is arranged at one end, connected with the main valve flap 5, of the valve rod 6, a T-shaped groove is formed in the main valve flap 5, and the T-shaped groove is connected with the T-shaped head in a matched mode.
In particular, the driving means is a hand wheel 13 for effecting manual control of the entire device.
The structure of the check type quick-shut hydrogen injection valve is explained by combining the attached drawings, and comprises a valve body I1, a check valve back pressure spring 2, a check valve clack 3, a valve body II 4, a main valve clack 5, a valve rod 6, a corrugated pipe assembly 7, an inlet connecting pipe 8, a valve cover 9, a bearing 10, a valve rod nut 11, an anti-rotation cover 12, a hand wheel 13, a key I14, a key II 15, a screw 16 and a bearing gland 17.
The front end of the second valve body 4 is connected with the first valve body 1, the first valve body 1 is connected with the second valve body 4 through welding, the rear end of the second valve body 4 is connected with the valve cover 9, and the valve cover 9 and the second valve body 4 form a main valve cavity through welding.
An inlet pipe 8 is welded in the middle section of the second valve body 4, and the inlet pipe 8 is communicated with the valve cavity.
The check valve clack 3 is provided with a step, and the back pressure spring 2 of the check valve is sleeved at the rear part of the step of the check valve clack and is arranged in the check valve cavity together with the check valve clack 3.
The main valve clack 5 is connected with the T-shaped head of the valve rod 6 through a T-shaped groove, the corrugated pipe assembly 7 is sleeved on the outer side of the valve rod 6, one end of the corrugated pipe assembly is welded with the outer surface of the valve rod 6, the other end of the corrugated pipe assembly is connected with the valve cover 9, and the corrugated pipe assembly 7, the main valve clack 5 and the valve rod 6 are installed in a valve cavity.
The valve rod nut 11 comprises a cylinder, a ring body and a flange, the cylinder, the ring body and the flange are sequentially and coaxially fixed, and one end of the cylinder, which is close to the ring body, is provided with a connecting threaded hole.
The valve cover 9 is connected with the bearing gland 17 through a screw 16, a cavity is formed between the valve cover 9 and the bearing gland 17, a flange of the valve rod nut 11 is arranged in the cavity, and bearings 10 are respectively arranged on two sides of the flange.
Still the cover is equipped with on the valve rod 6 and prevents changeing lid 12, prevents changeing lid 12 and sets up the one end that deviates from valve body 1 at valve gap 9, prevents changeing lid 12 and is provided with the keyway that corresponds with valve rod 6 position, and the valve rod 6 rotation is restricted through two 15 keys between the valve rod 6, prevents changeing still that the equipartition is provided with the connecting screw hole on the lid 12, is connected with valve gap 9 through screw 16. The connection threaded hole on the inner side of the valve rod nut 11 is matched with the tail end of the valve rod 6 to realize transmission.
The cylinder of the valve-stem nut 11 is sleeved with a hand wheel 13, and the hand wheel 13 is in limited connection with the cylinder of the valve-stem nut 11 through a key I14.
The valve cavities of the main valve flap 5 and the valve body II 4 are respectively provided with a conical surface, the main valve flap 5 and the valve cavity form a pair of sealing surfaces when contacting with each other, and when the main valve flap 5 and the valve body II 4 are separated, a gap between the main valve flap 5 and the valve body II can be used for medium circulation; the check valve clack 3 is provided with a hemispherical surface, the valve body II 4 corresponding to the hemispherical surface is provided with a conical surface, a pair of sealing surfaces are formed when the valve body II and the valve clack 3 are contacted with each other, and when the valve body II and the valve body II corresponding to the valve body II are separated, a gap between the valve body II and the valve clack 3 can be used for medium circulation.
When the driving device rotates, the valve rod nut 11 is driven to rotate synchronously, meanwhile, the valve rod 6 moves under the action of the valve rod nut 11, as shown in fig. 2, when the valve rod 6 moves to the right, the main valve flap 5 is driven to move to the right, a flow channel hole in the valve cavity of the valve body II 4 is exposed, and a medium can flow conveniently, at the moment, the reverse flow valve overcomes the pressure of the back pressure spring 2 of the reverse flow valve under the pressure action of the medium, the valve flap 3 of the reverse flow valve is pressed to move to the left, the flow channel hole in the whole reverse flow valve is opened, so that the medium flows into the main valve cavity through the inlet pipe 8, then flows into a pipeline through the valve body I1 after flowing into the valve cavity of the reverse flow valve through the main valve cavity, as shown in fig. 1, when the valve rod 6 moves to the left, the. As shown in fig. 3, when the hydrogen injection is finished, the medium is not supplied with pressure from the inlet pipe, at this time, the medium pressure in the first valve body 1 is greater than the medium pressure in the second valve body 4, the valve clack 3 of the check valve is pushed to move right, the flow passage hole on the reverse flow valve is blocked, the medium is prevented from flowing reversely, and the pipeline system and the hydrogen gas source system are isolated in time.
Example 2
As a further improvement measure on the basis of embodiment 1, in order to facilitate automatic control, reduce the labor burden, and improve the controllability and the degree of automation of the system, the present embodiment modifies the driving device.
Specifically, drive arrangement includes the motor, is connected with the sleeve on the output shaft of motor, and the sleeve deviates from the coaxial fixed connection of one end of valve body two 4 with valve-stem nut 11.
When the motor is started, the motor can synchronously drive the sleeve and the valve rod nut 11 to synchronously rotate.
The invention discloses a check type quick-closing hydrogen injection valve, which adopts a design that a check valve clack, a check valve main valve clack and a flow passage are coaxially integrated, and has the advantages that the structure is simple, the check valve can play a role in isolating liquid metal sodium or hydrogen medium in the flow passage, the check valve can prevent the liquid metal sodium medium from flowing back to the valve cavity, a valve body I is connected with a hydrogen injection pipeline, an inlet connecting pipe is connected with a hydrogen source pipeline, a valve rod is driven by a hand wheel, the valve is quickly opened or closed, the installation space is saved, the operation is convenient, the practicability is high, and the valve is worthy of.
The above disclosure is only for the preferred embodiments of the present invention, but the embodiments of the present invention are not limited thereto, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.
Claims (7)
1. A check type quick-shut-off hydrogen injection valve is characterized by comprising a valve body I (1), a check valve, a valve body II (4), a main valve rod assembly, a valve cover (9), a sealing connecting assembly and a driving device;
the valve comprises a first valve body (1), a second valve body (4), a valve cover (9), a sealing connecting assembly and a driving device which are sequentially connected, wherein a main valve cavity is formed between the second valve body (4) and the valve cover (9), a main valve rod assembly used for controlling the on-off of a medium circulation path is arranged in the main valve cavity, and a check valve for preventing medium backflow is arranged at the joint of the first valve body (1) and the second valve body (4);
the main valve rod assembly comprises a main valve flap (5), a valve rod (6) and a corrugated pipe assembly (7), wherein one end of the valve rod (6) is connected with the main valve flap (5), the corrugated pipe assembly (7) is sleeved on the middle section of the valve rod (6), one end of the corrugated pipe assembly (7) is fixed with the middle section of the valve rod (6), and the other end of the corrugated pipe assembly (7) is fixed with a valve cover (9);
the sealing connection assembly comprises a valve rod nut (11), a bearing (10), a bearing gland (17) and an anti-rotation cover (12); the valve rod nut (11) comprises a cylinder, a ring body and a flange which are coaxially and fixedly connected in sequence, and a connecting structure is arranged at one end of the cylinder close to the ring body; the anti-rotation cover (12) is sleeved and fixed at one end, away from the main valve flap (5), of the valve rod (6), the anti-rotation cover (12) is fixed with the valve cover (9), a valve rod nut (11) is sleeved outside the anti-rotation cover (12), a connecting structure on the valve rod nut (11) is connected with one end, away from the main valve flap (5), of the valve rod (6), and one end, away from the second valve body (4), of the valve rod nut (11) is connected with a driving device; the bearing gland (17) is sleeved on the ring body of the valve rod nut (11), the bearing gland (17) is fixedly connected with the valve cover (9), a cavity is formed between the bearing gland (17) and the valve cover (9), a flange of the valve rod nut (11) is arranged in the cavity, and bearings (10) are arranged on two sides of the flange respectively.
2. The check type quick-closing hydrogen injection valve according to claim 1, wherein the check valve comprises a check valve cavity, a check valve back pressure spring (2) and a check valve clack (3), the check valve cavity is arranged at the joint of the first valve body (1) and the second valve body (4), the check valve clack (3) is arranged in the check valve cavity, the check valve cavity is in clearance fit with the check valve clack (3), one end, close to the second valve body (4), of the check valve clack (3) can block a medium flow path when being tightly pressed on the check valve cavity, and one end, away from the second valve body (4), of the check valve clack (3) is sleeved with the check valve back pressure spring (2).
3. The non-return type quick-closing hydrogen injection valve according to claim 1, wherein an inlet pipe (8) is arranged in the middle of the second valve body (4), and the inlet pipe (8) is communicated with the main valve cavity.
4. The non-return type rapid shutoff hydrogen injection valve according to claim 1, wherein a T-shaped head is arranged at one end of the valve rod (6) connected with the main valve flap (5), a T-shaped groove is formed in the main valve flap (5), and the T-shaped groove is connected with the T-shaped head in a matching manner.
5. A non-return quick-shut hydrogen-filling valve according to claim 1, characterized in that the driving means is a hand wheel (13).
6. The non-return type quick-shut hydrogen injection valve according to claim 1, wherein the driving device comprises a motor, an output shaft of the motor is connected with a sleeve, and the sleeve is coaxially and fixedly connected with one end of the valve rod nut (11) departing from the second valve body (4).
7. The non-return type quick-closing hydrogen injection valve according to claim 1, wherein the first valve body (1), the second valve body (4) and the valve cover (9) are coaxial.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010025826.9A CN111173970A (en) | 2020-01-10 | 2020-01-10 | Non-return type quick-cut-off hydrogen injection valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010025826.9A CN111173970A (en) | 2020-01-10 | 2020-01-10 | Non-return type quick-cut-off hydrogen injection valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111173970A true CN111173970A (en) | 2020-05-19 |
Family
ID=70647654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010025826.9A Pending CN111173970A (en) | 2020-01-10 | 2020-01-10 | Non-return type quick-cut-off hydrogen injection valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111173970A (en) |
-
2020
- 2020-01-10 CN CN202010025826.9A patent/CN111173970A/en active Pending
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