CN210623713U

CN210623713U - Storage tank nitrogen sealing device with low nitrogen loss

Info

Publication number: CN210623713U
Application number: CN201921614870.2U
Authority: CN
Inventors: 郁勇
Original assignee: Jiangsu Fushen Special Valve Co Ltd
Current assignee: Jiangsu Fushen Special Valve Co Ltd
Priority date: 2019-09-26
Filing date: 2019-09-26
Publication date: 2020-05-26
Anticipated expiration: 2029-09-26

Abstract

The utility model discloses a storage tank nitrogen seal device that nitrogen gas loss is few, which comprises a valve body, the inside of valve body is provided with the disk seat, the middle part of disk seat is run through there is the valve rod, the bottom fixed connection case of valve rod, the case is including the choke plug, the cover is equipped with the sealing washer on its outer wall that is located the valve rod in top of choke plug, the top fixedly connected with baffle of sealing washer, the top movable mounting of baffle has the stopper, the cover is equipped with the thread bush on the top of stopper and the outer wall that is located the valve rod, the top of valve body is connected with the diaphragm room through the connecting piece, installs the diaphragm in the diaphragm room, the middle part cover of diaphragm outdoor wall is equipped with the buckle, the buckle includes two mounting discs, the inboard roof of mounting disc has the elasticity preforming with the equal fixed mounting of diapire, the utility. This storage tank nitrogen seal device that nitrogen gas loss is few through being provided with the buckle, can realize the quick dismantlement of diaphragm room.

Description

Storage tank nitrogen sealing device with low nitrogen loss

Technical Field

The utility model relates to a nitrogen seals technical field, specifically is a storage tank nitrogen seal device that nitrogen gas loss is few.

Background

The nitrogen sealing device is mainly used for keeping the pressure of protective gas at the top of the container constant so as to avoid the direct contact of materials in the container and air and prevent the materials from volatilizing and being oxidized, and the safety of the container, and is particularly suitable for the gas sealing protection system of a large-scale storage tank, the nitrogen sealing device does not need external energy and can work in occasions without electricity and air, thereby being convenient, saving energy and reducing cost, the nitrogen sealing device consists of a nitrogen supply valve, a nitrogen discharge valve and a breather valve, the nitrogen supply valve consists of a commander and a main valve, the nitrogen discharge valve consists of an internal feedback pressure opening type micro-pressure regulating valve, the nitrogen sealing device is used for accurately controlling, when a liquid inlet valve of the storage tank is opened, the liquid level is increased when the materials are added into the tank, the volume of a gas phase part is reduced, the pressure is increased, when the pressure in the tank is increased to be higher than the pressure set value of, when the pressure of the nitrogen discharging valve is reduced to a pressure set point of the nitrogen discharging valve, the nitrogen discharging valve is automatically closed, when a storage tank is opened, a user discharges materials, the liquid level is reduced, the volume of a gas phase part is increased, the pressure in the storage tank is reduced, the nitrogen supplying valve is opened, nitrogen is injected into the storage tank, the pressure in the storage tank is increased, the nitrogen is raised to the pressure set point of the nitrogen supplying valve, and the nitrogen is automatically.

Nitrogen seal device is when using, at first need debug, debugging misoperation probably causes the diaphragm to become invalid, use a period back at nitrogen seal device, need regularly overhaul the diaphragm and maintain, it is malfunctioning to avoid the diaphragm to become invalid to cause the nitrogen to seal the valve, the diaphragm room of current nitrogen seal device is through a plurality of bolt fixed mounting, when dismantling the installation, the process is loaded down with trivial details, low efficiency, the gas tightness has the uncertainty, in addition, after long-time use, the case is easy to be corroded and damaged, and influence sealed degree, the nitrogen gas loss is many, and production cost increases.

SUMMERY OF THE UTILITY MODEL

The utility model is not enough to prior art, the utility model provides a storage tank nitrogen seal device that nitrogen gas loss is few, nitrogen seal device has been solved when using, at first need debug, the improper operation of debugging may cause the diaphragm to become invalid, use a period back at nitrogen seal device, need regularly overhaul the diaphragm and maintain, it is malfunctioning to avoid the diaphragm inefficacy to cause the nitrogen to seal the valve, current nitrogen seal device's diaphragm room is through a plurality of bolt fixed mounting, when dismantling the installation, the process is loaded down with trivial details, low efficiency, there is the uncertainty in the gas tightness, in addition, after long-time use, the case is easy to be corroded and damaged, and influence sealed degree, the nitrogen gas loss is many, manufacturing cost increases's problem.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a storage tank nitrogen sealing device with low nitrogen loss comprises a valve body, wherein a valve seat is arranged inside the valve body, a valve rod penetrates through the middle of the valve seat, the bottom end of the valve rod is fixedly connected with a valve core, the valve core comprises a plugging head, a sealing ring is sleeved on the outer wall of the valve rod above the plugging head, a baffle is fixedly connected above the sealing ring, a limiting block is movably mounted above the baffle, a threaded sleeve is sleeved on the outer wall of the valve rod above the limiting block, the top of the valve body is connected with a diaphragm chamber through a connecting piece, a diaphragm is mounted in the diaphragm chamber, a buckle is sleeved in the middle of the outer wall of the diaphragm chamber and comprises two mounting discs, elastic pressing sheets are fixedly mounted on the top wall and the bottom wall of the inner side of each mounting disc, a sealing pad is fixedly connected on the inner side wall of each mounting disc, and gaskets are fixedly connected on, the both sides of mounting disc outer wall all fixedly connected with mounting hole.

Preferably, the top end of the valve rod is fixedly connected below the diaphragm, and the bottom end of the valve rod sequentially penetrates through the connecting piece and the valve body and extends into the valve body.

Preferably, the bottom of the plugging head is provided with an arc-shaped chamfer, and the plugging head is matched with the valve seat.

Preferably, the limiting block is connected to the outer wall of the valve rod in a sliding mode, and the threaded sleeve is connected with the valve rod in a threaded mode.

Preferably, the bottom of the connecting piece is embedded in the top of the valve body through a bolt, and the top of the connecting piece is fixedly connected with the diaphragm chamber.

Preferably, the two mounting discs are symmetrically distributed and fixedly connected together through bolts.

Preferably, the top and the bottom of the diaphragm chamber are both provided with a clamping groove matched with the elastic pressing sheet.

Advantageous effects

The utility model provides a storage tank nitrogen seal device that nitrogen gas loss is few. Compared with the prior art, the method has the following beneficial effects:

(1) this few storage tank nitrogen seal device of nitrogen gas loss, through being provided with the buckle, the buckle includes two mounting discs, the inboard roof of mounting disc has the elasticity preforming with the equal fixed mounting of diapire, fixedly connected with is sealed to fill up on the inside wall of mounting disc, the equal fixedly connected with gasket of terminal surface of mounting disc both sides, the equal fixedly connected with mounting hole in both sides of mounting disc outer wall, can realize the quick dismantlement of diaphragm room, thereby can overhaul and change the diaphragm, work efficiency is improved, a plurality of bolted connection's of tradition mode compares, easy operation is convenient.

(2) This storage tank nitrogen seal device that nitrogen gas loss is few, through being provided with the case, the case includes the stopper head, its cover that is located the outer wall of valve rod is equipped with the sealing washer in the top of stopper head, the top fixedly connected with baffle of sealing washer, the top movable mounting of baffle has the stopper, the top of stopper and the cover that is located the outer wall of valve rod are equipped with the thread bush, can realize the quick replacement of case, the multiple seal protection of while, when the stopper head receives corruption and influences the leakproofness, even in short-term not in time change the case, still can guarantee the overall sealing nature, the loss of nitrogen gas has been reduced, and the cost is reduced.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view of the valve cartridge of the present invention;

fig. 3 is a schematic structural view of the buckle of the present invention.

In the figure: 1. a valve body; 2. a valve seat; 3. a valve stem; 4. a valve core; 5. a plugging head; 6. a seal ring; 7. a baffle plate; 8. a limiting block; 9. a threaded sleeve; 10. a connecting member; 11. a diaphragm chamber; 12. a membrane; 13. buckling; 14. mounting a disc; 15. elastic tabletting; 16. a gasket; 17. a gasket; 18. and (7) installing holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a storage tank nitrogen sealing device with less nitrogen loss comprises a valve body 1, a valve seat 2 is arranged inside the valve body 1, a valve rod 3 penetrates through the middle of the valve seat 2, a valve core 4 is fixedly connected to the bottom end of the valve rod 3, the valve core 4 comprises a blocking head 5, the bottom of the blocking head 5 is provided with an arc-shaped chamfer, the blocking head 5 is matched with the valve seat 2, a sealing ring 6 is sleeved on the outer wall of the valve rod 3 above the blocking head 5, a baffle 7 is fixedly connected to the upper portion of the sealing ring 6, a limiting block 8 is movably arranged above the baffle 7, the limiting block 8 is slidably connected to the outer wall of the valve rod 3, a threaded sleeve 9 is in threaded connection with the valve rod 3, a threaded sleeve 9 is sleeved on the outer wall of the valve rod 3 above the limiting block 8, the top of the valve body 1 is connected with a diaphragm chamber 11 through a connecting piece 10, the bottom of the connecting piece 10 is, install diaphragm 12 in diaphragm room 11, the top of valve rod 3 is fixedly connected below diaphragm 12, the bottom of valve rod 3 runs through connecting piece 10 and valve body 1 in proper order and extends to valve body 1, the middle part cover of diaphragm room 11 outer wall is equipped with buckle 13, buckle 13 includes two mounting discs 14, two mounting discs 14 are the symmetric distribution, and two mounting discs 14 pass through bolt fixed connection together, the roof and the diapire of mounting disc 14 inboard are all fixedly installed with elastic pressure piece 15, the top and the bottom of diaphragm room 11 all set up the draw-in groove with elastic pressure piece 15 looks adaptation, fixedly connected with sealed pad 16 on the inside wall of mounting disc 14, the terminal surface of mounting disc 14 both sides all fixedly connected with gasket 17, the both sides of mounting disc 14 outer wall all fixedly connected with mounting hole 18, through being provided with buckle 13, can realize the quick dismantlement of diaphragm room 11, thereby can overhaul and change diaphragm 12, the efficiency of work is improved, compares a plurality of bolted connection's of tradition mode, and easy operation is convenient, through being provided with case 4, can realize case 4's quick replacement, and the while multiple seal protection receives the corruption and when influencing the leakproofness, even if not in time change case 4 in short-term, still can guarantee the overall sealing nature, has reduced the loss of nitrogen gas, the cost is reduced.

During operation, operating personnel is when carrying out the maintenance and the change of diaphragm 12, at first lift the bolt in two mounting holes 18 off, pull two mounting discs 14 afterwards away, can carry out the dismantlement of diaphragm room 11, thereby realize the failure detection of diaphragm 12 and change diaphragm 12, if the loss appears in case 4, when carrying out the change of case 4, at first operating personnel carries out the dismantlement of valve body 1 with connecting piece 10, take out valve rod 3 together with case 4 afterwards in the lump, and rotate thread bush 9, can accomplish the separation of jam head 5, thereby accomplish the change of case 4.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a storage tank nitrogen seal device that nitrogen gas loss is few, includes valve body (1), the inside of valve body (1) is provided with disk seat (2), valve rod (3) have been run through at the middle part of disk seat (2), bottom fixed connection case (4) of valve rod (3), its characterized in that: the valve core (4) comprises a plugging head (5), a sealing ring (6) is sleeved on the outer wall of the valve rod (3) above the plugging head (5), a baffle (7) is fixedly connected above the sealing ring (6), a limiting block (8) is movably mounted above the baffle (7), a threaded sleeve (9) is sleeved on the outer wall of the valve rod (3) above the limiting block (8), the top of the valve body (1) is connected with a diaphragm chamber (11) through a connecting piece (10), a diaphragm (12) is mounted in the diaphragm chamber (11), a buckle (13) is sleeved in the middle of the outer wall of the diaphragm chamber (11), the buckle (13) comprises two mounting discs (14), elastic pressing sheets (15) are fixedly mounted on the top wall and the bottom wall of the inner side of each mounting disc (14), and a sealing gasket (16) is fixedly connected on the inner side wall of each mounting disc (14), the mounting plate is characterized in that gaskets (17) are fixedly connected to the end faces of two sides of the mounting plate (14), and mounting holes (18) are fixedly connected to two sides of the outer wall of the mounting plate (14).

2. The nitrogen sealing device for the storage tank with low nitrogen loss as claimed in claim 1, wherein: the top fixed connection of valve rod (3) is in the below of diaphragm (12), the bottom of valve rod (3) runs through connecting piece (10) and valve body (1) in proper order and extends to in valve body (1).

3. The nitrogen sealing device for the storage tank with low nitrogen loss as claimed in claim 1, wherein: the bottom of the plugging head (5) is provided with an arc-shaped chamfer, and the plugging head (5) is matched with the valve seat (2).

4. The nitrogen sealing device for the storage tank with low nitrogen loss as claimed in claim 1, wherein: the limiting block (8) is connected to the outer wall of the valve rod (3) in a sliding mode, and the threaded sleeve (9) is connected with the valve rod (3) in a threaded mode.

5. The nitrogen sealing device for the storage tank with low nitrogen loss as claimed in claim 1, wherein: the bottom of the connecting piece (10) is embedded at the top of the valve body (1) through a bolt, and the top of the connecting piece (10) is fixedly connected with the diaphragm chamber (11).

6. The nitrogen sealing device for the storage tank with low nitrogen loss as claimed in claim 1, wherein: the two mounting discs (14) are symmetrically distributed, and the two mounting discs (14) are fixedly connected together through bolts.

7. The nitrogen sealing device for the storage tank with low nitrogen loss as claimed in claim 1, wherein: the top and the bottom of the diaphragm chamber (11) are both provided with clamping grooves matched with the elastic pressing sheets (15).