CN209725593U - A kind of plug - Google Patents
A kind of plug Download PDFInfo
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- CN209725593U CN209725593U CN201920157796.XU CN201920157796U CN209725593U CN 209725593 U CN209725593 U CN 209725593U CN 201920157796 U CN201920157796 U CN 201920157796U CN 209725593 U CN209725593 U CN 209725593U
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- rubber bodies
- rod
- plug
- metallic rod
- rubber
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Abstract
The utility model provides a kind of plug, belongs to field of mechanical technique.It solves the problems, such as to be difficult to dismantle when existing plug is connected firmly.This plug includes the rubber bodies being in the form of a column, rubber bodies outer diameter is gradually reduced by one end to the other end of rubber bodies, edge is axially arranged with metallic rod in rubber bodies, metallic rod is fixedly connected with rubber bodies, the inner end of metallic rod is located in rubber bodies, the outer end of metallic rod is stretched out outside the biggish one end of rubber bodies outer diameter, and the outer end of metallic rod is equipped with attachment.It has many advantages, such as to be connected firmly with tube bank, installs and convenient disassembly.
Description
Technical field
The utility model belongs to field of mechanical technique, is related to a kind of plug more particularly to a kind of for bank of condenser pipes
Plug.
Background technique
Condenser is mainly used in steam turbine power plant, it is a kind of heat exchange that turbine discharge can be condensed into water
Device, moreover it is possible to establish vacuum at turbine discharge and maintain vacuum.It leaks, can be arranged in the end of bank of condenser pipes in order to prevent
Plug with realize sealing, at present on bank of condenser pipes common plug as application No. is the condensings disclosed in 201620692934.0
Device restrains Quick leak stoppage apparatus, it includes bolt, the locking nut with bolt cooperation, between the head and locking nut of bolt
It is arranged at least two sections of rubber sleeves on screw rod, is equipped with steel plate washer between adjacent two rubber sleeve, steel plate washer is equally set on screw rod,
During installation, device for plugging is put into the tube bank of condenser, then by rotation lock nut to the rubber being set on screw rod
Gum cover is squeezed, and rubber sleeve each in this way will be radially expanded and be contacted with the tube bank inner wall of condenser, thus to condenser
Tube bank be sealed, while can be convenient the subsequent plug to damage in this way and being dismantled and replaced.
But there is some shortcomingss for the bank of condenser pipes Quick leak stoppage apparatus: firstly, subsequent in order to facilitate
The plug of damage is dismantled and replaced, so that this device for plugging and bank of condenser pipes only rely on rubber sleeve and expand outwardly shape
At contact, cause frictional force between the two insufficient, and in the dual work of vacuum and recirculated water return water siphonic water-collecting well inside condenser
Inside pulling force can be generated to device for plugging with lower, and the pulling force is influenced by condenser load and the variation of seawater tidal level
, once pulling force increase will cause device for plugging to be drawn into tube bank, keep this stifled in order to convenient replaced to plug
Leakage device there is the connection with tube bank is not secured enough, it is easy to fall off and the problem of make seal failure；In addition, due to the device for plugging
What is relied on is that rotation lock nut radially expands rubber sleeve to be installed, it means that staff had been both during installation
Screw rod be fixed, while operate locking nut again, therefore installed and be inconvenient, and for the peace of staff
Dress level and installation experience have very high requirement.
Summary of the invention
The purpose of this utility model is in view of the above-mentioned problems existing in the prior art, to propose a kind of plug, solve
It realizes and is difficult to the technical issues of dismantling when plug is connected firmly.
The purpose of this utility model can be realized by the following technical scheme:
A kind of plug, including the rubber bodies being in the form of a column, the rubber bodies outer diameter by rubber bodies one end to the other end by
It is decrescence small, which is characterized in that along metallic rod is axially arranged in the rubber bodies, metallic rod is fixedly connected with rubber bodies, metallic rod
Inner end be located in rubber bodies, the outer end of metallic rod is stretched out outside the biggish one end of rubber bodies outer diameter, and is set on the outer end of metallic rod
There is attachment.
In general, if it is cone cell plug made of pure rubber, hammer is used since the screen resilience of rubber itself will lead to
It is difficult entirely to knock in plug in tube bank, tube bank could be entirely pressed into for plug made of pure rubber by needing to configure dedicated equipment
It is interior while also completely hard when plug aging needs replacing, and the plug made of pure rubber body is encased in tube bank
Cause to be difficult to remove to be replaced due to forming interference fit between pure rubber body and tube bank afterwards.
And in this plug, by metallic rod axially disposed in rubber bodies, metallic rod is fixedly connected with rubber bodies, installation
When the lesser one end of rubber bodies outer diameter is put into the port of tube bank, then staff can directly benefit hit with a hammer
On the outer end of metallic rod, metallic rod will drive rubber bodies to squeeze into tube bank naturally, squeeze in the biggish part of rubber bodies outer diameter
It can be deformed by the extruding for restraining inner wall during entering in tube bank and gradually be elongated, so that rubber bodies be made to get enter into pipe
The sealing to tube bank port is realized in beam, while being formed interference fit between rubber bodies meeting and tube bank and being formed biggish swelling
Power is to improve the connectivity robustness between plug and tube bank.In addition, since metallic rod outer end is equipped with attachment, then working as rubber bodies
When using for a long time and aging occur, staff, which only needs to be connected to using tool, can be inconjunction with metallic rod in attachment
Rubber bodies are extracted outward.
This plug sets rubber bodies to the tubular structure that outer diameter gradually changes, so that being capable of shape between rubber bodies and tube bank
At biggish contact area and tension force, to improve the connectivity robustness between plug and tube bank, ensure that sealing has
Effect property；Meanwhile attachment is set by metallic rod axially disposed in rubber bodies and in the outer end of metallic rod, it is improving in this way
Making staff again while plug is with tube bank connectivity robustness can take apart plug out of tube bank.
In above-mentioned plug, the metallic rod includes the body of rod and branch fastener, and rubber bodies outer diameter is stretched out in body of rod outer end
Outside biggish one end, branch fastener is fixed on the inner end of the body of rod, and the outer diameter of branch fastener gradually contracts along the direction that the body of rod stretches out rubber bodies
It is small.
Conventional metallic rod be typically all be in it is leptosomatic, hitting with a hammer metallic rod so that plug to be installed in tube bank
When, it is possible that the case where wearing, is directly disclosed in the lesser one end of rubber bodies outer diameter by metallic rod.Therefore, metallic rod is processed as wrapping
Include the body of rod and branch fastener, branch fastener is fixed on the inner end of the body of rod, the outer diameter of branch fastener along the body of rod stretch out the directions of rubber bodies by
It is tapered small, it is meant that the outer diameter of branch fastener is gradually increased along the percussion direction of hammer, allows for the inner end of metallic rod in this way
It is larger, that is to say, that metallic rod is no longer conventional slender type, while foring inclined-plane between metallic rod inner end and rubber bodies and matching
It closes, inclined-plane cooperation can increase the friction between metallic rod and rubber bodies when staff pulls out metallic rod outward using tool
Power, to enable metallic rod that rubber bodies to be driven to be displaced outwardly the dismounting to realize plug together.In addition, due to installation when be by
Staff's benefit hits with a hammer what metallic rod drive rubber bodies moved inward, and the setting of branch fastener can also avoid installed plug
When metallic rod the lesser one end of rubber bodies outer diameter disclosed wear, ensure that the reliability of stopper structure.
In above-mentioned plug, the attachment is the external screw thread for being set to body of rod outer end side.Attachment is set as
External screw thread set on body of rod outer end side, such staff need to only be connected to the outer of the body of rod using existing external screw thread pin removal
Entire plug can be removed out of tube bank on end.
In above-mentioned plug, entire body of rod side is equipped with external screw thread.
All process external threads in the side of the entire body of rod, the external screw thread of body of rod outer end for connect external screw thread pin removal with
Facilitate staff to dismantle plug, and the body of rod be located at the intracorporal external screw thread of rubber be then used to increase the body of rod and rubber bodies it
Between frictional force, avoid staff from occurring the phenomenon that metallic rod and rubber bodies disengage when pulling out outward using external screw thread pin removal,
Improve reliability when plug is dismantled.
In above-mentioned plug, as another technical solution, the attachment is to be set on body of rod outer end face
Connecting pore, the connecting pore is interior to be equipped with internal screw thread, is located at the intracorporal body of rod side of rubber and is equipped with external screw thread.
Attachment is the connecting pore on body of rod outer end face, and internal screw thread is equipped in connecting pore, and such staff is only
Need to be connected on the outer end of the body of rod using existing internal screw thread pin removal can be removed entire plug out of tube bank.Meanwhile
The frictional force between the body of rod and rubber bodies can then be increased by being equipped with external screw thread positioned at the intracorporal body of rod side of rubber, avoid work people
There is the phenomenon that metallic rod and rubber bodies disengagement in member when pulling out metallic rod outward using internal screw thread pin removal, improve plug and torn open
Reliability when unloading.
In above-mentioned plug, the biggish one end lateral wall of the rubber bodies outer diameter is equipped with convex shoulder in a ring.
Plug be installed to tube bank end in after, convex shoulder in a ring can be resisted against on the end face of tube bank be further formed it is close
Envelope.Simultaneously when condenser load or seawater tidal level change, the pulling force for inwardly pulling plug is formed inside condenser, it is convex at this time
Shoulder can play barrier effect, and plug is made to be more difficult to stress and inwardly fall off, and the connection for further improving plug and tube bank is steady
It is qualitative.
In above-mentioned plug, as another technical solution, the biggish one end lateral wall of the rubber bodies outer diameter is set
There are at least two convex blocks, each convex block is circumferentially distributed.
After plug is installed in tube bank end, each convex block can be resisted against on the end face of tube bank, when condenser load or seawater
When tidal level changes, the pulling force for inwardly pulling plug is formed inside condenser, each convex block can play barrier effect at this time, make to block up
Head is more difficult to stress and inwardly falls off, and further improves the connective stability of plug and tube bank.
In above-mentioned plug, it is long at least more than the half of rubber bodies that the metallic rod is located at the intracorporal part of rubber
Degree.
Metallic rod is located at general length of the intracorporal part of rubber at least more than rubber bodies, can obviously increase metal in this way
Bar enables rubber bodies more swimmingly to squeeze into tube bank the stretching action of rubber bodies, further improves the installation of plug
Convenience.
In above-mentioned plug, the rubber bodies are made of ethylene propylene diene rubber.
Existing plug is generally made of nitrile rubber, since this plug is applied on bank of condenser pipes, is contacted
Medium be seawater, therefore rubber bodies are made instead of nitrile rubber using ethylene propylene diene rubber, plug can be improved in this way
Resistance to corrosion seawater, to extend the service life of plug, guarantee sealing performance.
In above-mentioned plug, the rubber bodies are shaped in metallic rod by vulcanization.
When making this plug, metallic rod is first processed, then metallic rod is placed in mold, then pours into liquid into mold
Robber materials and heat pressurization and carry out vulcanization molding, can be integrally formed out and be cylindrical in shape and with taper in such metallic rod
Rubber bodies.
Compared with prior art, rubber bodies are shaped in metallic rod by this plug makes the two be fixed with one, and utilizes
The taper of rubber bodies can form biggish contact area and tension force between tube bank, improve the company between plug and tube bank
Connect fastness, at the same metallic rod setting and the attachment on metallic rod outer end enable staff very convenientlyly pair
Plug is mounted and dismounted.
In addition, convex shoulder or convex block are arranged on the outside of the biggish one end of rubber bodies outer diameter, plug and pipe can be further increased
Connectivity robustness between beam, avoids plug from inwardly falling off.
Detailed description of the invention
Fig. 1 is the schematic diagram of this plug embodiment one.
Fig. 2 is the schematic diagram of metallic rod in this plug.
Fig. 3 is the cross-sectional view after this plug is packed into tube bank.
In figure, 1, rubber bodies；1a, convex shoulder；2, metallic rod；2a, the body of rod；2a1, external screw thread；2b, branch fastener；3, it restrains.
Specific embodiment
It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these examples.
Embodiment one
As shown in Figure 1, a kind of plug, including metallic rod 2 and the rubber bodies being in the form of a column 1.The outer diameter of rubber bodies 1 is by rubber
One end of body 1 to the other end is gradually reduced, and the minimum outer diameter of rubber bodies 1 is300 -0.025The maximum outside diameter of mm, rubber bodies 1 is32±0.1mm.Metallic rod 2 is threaded through in rubber bodies 1 along axial direction, and metallic rod 2 is fixedly connected with rubber bodies 1,2 inner end of metallic rod position
In in rubber bodies 1, the outer end of metallic rod 2 is stretched out outside the biggish one end of 1 outer diameter of rubber bodies, and the outer end of metallic rod 2 is equipped with and is coupled
Portion 2a1.
As shown in Figure 1, rubber bodies 1 are made of ethylene propylene diene rubber, rubber bodies 1 particular by vulcanization one at
Type is in metallic rod 2, and metallic rod 2 is located at half length of the part in rubber bodies 1 at least more than rubber bodies 1, and in rubber
The biggish one end lateral wall of 1 outer diameter of body is equipped with convex shoulder 1a in a ring, and the outer diameter of convex shoulder 1a is38mm.Specifically in the present embodiment
In, the length of rubber bodies 1 is 120mm, and it is 80mm that metallic rod 2, which is located at the length in rubber bodies 1,.
As depicted in figs. 1 and 2, metallic rod 2 includes body of rod 2a and branch fastener 2b, and the outer end body of rod 2a is stretched out outside rubber bodies 1
Outside the biggish one end of diameter, attachment 2a1 is the external screw thread set on the outer end body of rod 2a side, and branch fastener 2b is fixed on the interior of body of rod 2a
The outer diameter at end, branch fastener 2b is gradually reduced along the direction that body of rod 2a stretches out rubber bodies 1.In the present embodiment, entire body of rod 2a
Side is equipped with external screw thread.
When manufacturing this plug, the metallic rod 2 including body of rod 2a and branch fastener 2b is first processed, then by metallic rod 2
It is placed in the mold of molding.Then, the robber materials of liquid being poured into mold and heating pressurization carry out vulcanization molding,
Make the robber materials of liquid that will be integrally molded so as being cylindrical in shape in metallic rod 2 and the rubber bodies 1 with taper in this way.Due to whole
A body of rod 2a has external screw thread, therefore after molding rubber bodies 1, the connection between rubber bodies 1 and body of rod 2a is very secured,
The two is not easily disconnected from.
When plug is installed in 3 ports of tube bank, the lesser one end of 1 outer diameter of rubber bodies is put into 3 ports of tube bank, then
On the outer end face of the metallic rod that hits with a hammer 2.The two is set to be fixed as one since rubber bodies 1 are shaped in metallic rod 2,
Therefore it will drive rubber bodies 1 when metallic rod 2 is tapped by hammer to move into tube bank 3, the biggish part of such 1 outer diameter of rubber bodies
It just will receive the extruding of 3 inner walls of tube bank and be deformed and gradually elongated, final rubber bodies 1 are all squeezed into substantially in tube bank 3,
Interference fit is formed between rubber bodies 1 and tube bank 3 and forms biggish tension force, so that plug be made to be firmly attached with tube bank 3
Together.
As shown in figure 3, the convex shoulder 1a in rubber bodies 1 in a ring is resisted against the end of tube bank 3 after plug is installed in tube bank 3
On face, sealing function can be equally formed herein.Meanwhile when condenser load or seawater tidal level change, formed inside condenser
The pulling force that plug is inwardly pulled, convex shoulder 1a can play barrier effect at this time, then match with rubber bodies 1 are closed with 3 interference of tube bank
The tension force for being combined and being formed further improves plug and tube bank 3 so that plug is more difficult to stress and inwardly falls off
Connectivity robustness.
After 1 long-time of rubber bodies uses and aging occurs, plug is needed replacing, staff only need to be by external screw thread at this time
Pin removal, which is connected on the outer end of metallic rod 2, can be inconjunction with metallic rod 2 the entire extraction outward of rubber bodies 1.In addition, by
It is designed with external screw thread on the outside of entire body of rod 2a, after rubber bodies 1 are shaped in metallic rod 2, metallic rod 2 and rubber bodies 1
Between connection it is very secured, may insure in this way outward pull out plug during rubber bodies 1 and metallic rod 2 be not in de-
From.
Embodiment two
The present embodiment is essentially identical with the structure and principle of embodiment one, the difference is that: in the present embodiment, rubber
The biggish one end lateral wall of 1 outer diameter of body is equipped at least two convex blocks, and each convex block is circumferentially distributed.
Embodiment three
The present embodiment is essentially identical with the structure and principle of embodiment one, the difference is that: in the present embodiment, it is coupled
Portion 2a1 is the connecting pore being set on body of rod 2a outer end face, is equipped with internal screw thread, the body of rod 2a in rubber bodies 1 in connecting pore
Side is equipped with external screw thread.Attachment 2a1 is the connecting pore on body of rod 2a outer end face, and internal screw thread is equipped in connecting pore, this
Sample staff need to be only connected on the outer end of body of rod 2a using existing internal screw thread pin removal can be by entire plug from pipe
It is removed in beam.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Claims (10)
1. a kind of plug, including the rubber bodies (1) being in the form of a column, the rubber bodies (1) outer diameter is by one end of rubber bodies (1) to another
One end is gradually reduced, which is characterized in that edge is axially arranged with metallic rod (2) in the rubber bodies (1), metallic rod (2) and rubber
Body (1) is fixedly connected with, and the inner end of metallic rod (2) is located in rubber bodies (1), the outer end of metallic rod (2) stretch out rubber bodies (1) outer diameter compared with
Outside big one end, and the outer end of metallic rod (2) is equipped with attachment (2a1).
2. plug according to claim 1, which is characterized in that the metallic rod (2) includes the body of rod (2a) and support
Head (2b), the body of rod outer end (2a) are stretched out outside rubber bodies (1) biggish one end of outer diameter, and branch fastener (2b) is fixed on the interior of the body of rod (2a)
The outer diameter at end, branch fastener (2b) is gradually reduced along the direction that the body of rod (2a) stretches out rubber bodies (1).
3. plug according to claim 2, which is characterized in that the attachment (2a1) is to be set to the body of rod (2a) outside
The external screw thread in end side portion.
4. plug according to claim 3, which is characterized in that the entire body of rod side (2a) is equipped with external screw thread (2a1).
5. plug according to claim 2, which is characterized in that the attachment (2a1) is to be set to the body of rod (2a) outside
Connecting pore on end face, the connecting pore is interior to be equipped with internal screw thread, and the body of rod side (2a) being located in rubber bodies (1) is equipped with outer spiral shell
Line.
6. plug described according to claim 1 or 2 or 3 or 4 or 5, which is characterized in that described rubber bodies (1) outer diameter is larger
One end lateral wall be equipped with convex shoulder (1a) in a ring.
7. plug described according to claim 1 or 2 or 3 or 4 or 5, which is characterized in that described rubber bodies (1) outer diameter is larger
One end lateral wall be equipped at least two convex blocks, each convex block is circumferentially distributed.
8. plug described according to claim 1 or 2 or 3 or 4 or 5, which is characterized in that the metallic rod (2) is located at rubber
The half length of part in body (1) at least more than rubber bodies (1).
9. plug described according to claim 1 or 2 or 3 or 4 or 5, which is characterized in that the rubber bodies (1) use ternary
EP rubbers is made.
10. plug described according to claim 1 or 2 or 3 or 4 or 5, which is characterized in that the rubber bodies (1) pass through vulcanization
Mode is shaped on metallic rod (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920157796.XU CN209725593U (en) | 2019-01-29 | 2019-01-29 | A kind of plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920157796.XU CN209725593U (en) | 2019-01-29 | 2019-01-29 | A kind of plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209725593U true CN209725593U (en) | 2019-12-03 |
Family
ID=68681888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920157796.XU Active CN209725593U (en) | 2019-01-29 | 2019-01-29 | A kind of plug |
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| Country | Link |
|---|---|
| CN (1) | CN209725593U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109595424A (en) * | 2019-01-29 | 2019-04-09 | 华能国际电力股份有限公司玉环电厂 | A kind of plug |
-
2019
- 2019-01-29 CN CN201920157796.XU patent/CN209725593U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109595424A (en) * | 2019-01-29 | 2019-04-09 | 华能国际电力股份有限公司玉环电厂 | A kind of plug |
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