CN211802824U - Dredging device for blocking initiator injection pipeline - Google Patents
Dredging device for blocking initiator injection pipeline Download PDFInfo
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- CN211802824U CN211802824U CN201922056235.3U CN201922056235U CN211802824U CN 211802824 U CN211802824 U CN 211802824U CN 201922056235 U CN201922056235 U CN 201922056235U CN 211802824 U CN211802824 U CN 211802824U
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- end cover
- pipeline
- initiator injection
- injection line
- connecting piece
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Abstract
The utility model relates to an initiating agent injection pipeline dredging device for jam, it includes the metal casing and locates the end cover of metal casing one end, the middle part of end cover is equipped with and runs through the connecting piece that is used for connecting initiating agent injection pipeline of end cover, be equipped with the first joint of intercommunication initiating agent injection pipeline on the connecting piece, first articulate nitrogen gas pipeline, still be equipped with on the end cover that seals and run through the second of end cover connects, the overheated middling pressure steam line of second articulate. The utility model discloses earlier utilize the overheated middling pressure steam pipeline of second articulate on the end cover, let in overheated middling pressure steam to metal sleeve, to the heating of initiating agent injection pipe, make the plug in the initiating agent injection pipe become the melting liquid by the solid, recycle the first articulate nitrogen pipeline on the connecting piece, fill into nitrogen gas and sweep in the initiating agent injection pipe to the realization is to the mediation of initiating agent injection pipe.
Description
Technical Field
The utility model relates to a polyethylene production technical field especially relates to an initiating agent injection pipeline blocks up and uses pull throughs.
Background
High pressure polyethylene plants (kettle high pressure polyethylene and tubular high pressure polyethylene) require the use of initiators in the production of polyethylene from ethylene monomer. The initiator is injected into the reactor of the high-pressure polyethylene device through an initiator injection line under the pressurization action of an initiator pump. Since the pressure in a high pressure polyethylene plant reactor can be as high as 300MPa, the initiator injection line is a special line that has a very thin inside diameter, a relatively thick wall, a length typically in the range of 5-10 meters, and is generally expensive.
Due to the structural characteristics of the pipeline and the production characteristics of the device, the initiator injection pipeline is blocked due to the polymerization of ethylene monomer in production, so that the initiator cannot be smoothly injected into the reactor, and the production process is interrupted. When the initiator injection pipeline is blocked in production, because the inner diameter of the pipeline is too thin, too long time is needed for dredging the blocked initiator pipeline, the production is influenced, and the dredging and cleaning effects are not ideal.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art, the utility model provides an initiator injection line mediation effect is good for pull throughs is blockked up to initiator injection line.
The utility model provides a technical scheme that its technical problem adopted is: initiator injection line blocks up uses pull throughs includes metal casing and the end cover of locating metal casing one end, the middle part of end cover is equipped with and runs through end cover's the connecting piece that is used for connecting initiator injection line, be equipped with the first joint of intercommunication initiator injection line on the connecting piece, nitrogen pipeline is connected to first joint, still be equipped with on the end cover of sealing and run through end cover's second connects, overheated middling pressure steam line is connected to the second joint.
In the utility model provides an initiating agent injection line is pull throughs for jam in a preferred embodiment, the internal diameter of metal sleeve is greater than the external diameter of initiating agent injection line.
In the utility model provides an initiating agent injection line is dredge for jam in a preferred embodiment, the metal sleeve pipe and end cover threaded connection.
In the utility model provides an initiating agent injection line is pull throughs for jam in a preferred embodiment, the second connects and end cover threaded connection, the first connects and connecting piece threaded connection.
In a preferred embodiment of the dredging device for blocking the initiator injection pipeline, the connecting piece is connected with the sealing end cover by a sunk flange plate screw.
The utility model provides an initiator injection line blocks up uses pull throughs in a preferred embodiment, the connecting piece is equipped with towards metal sleeve's one end and holds initiator injection line's appearance chamber, first joint with the appearance chamber is linked together.
The utility model provides an initiator injection line blocks up uses pull throughs in a preferred embodiment, it still is equipped with the rubber sleeve to hold the intracavity, the rubber sleeve can hug closely when initiator injection line arranges in and holds the intracavity in initiator injection line's outer wall.
In the utility model provides a trigger injection line is dredge for jam in a preferred embodiment, the diameter of metal sleeve pipe by seal end cover's one end to the other end steadilys decrease.
Compared with the prior art, the utility model provides an initiating agent injection line blocks up uses pull throughs's beneficial effect is: the utility model discloses utilize the metal sleeve cover to locate outside initiator injection pipeline, and connect the port of initiator injection pipeline through the connecting piece on the end cover, utilize the second joint on the end cover to connect overheated middling pressure steam line earlier, let in overheated middling pressure steam to the metal sleeve, heat initiator injection pipe, make the stopper in the initiator injection pipeline become the melting liquid state (utilize the characteristics of initiator injection pipeline stopper low melting point) by the solid, reuse first joint on the connecting piece and connect the nitrogen pipeline, fill nitrogen gas in the initiator injection pipeline and sweep, thereby realize the mediation to initiator injection pipeline; the problems of cost increase and pipeline material waste caused by replacement of the initiator injection pipeline are solved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:
FIG. 1 is a schematic structural view of a preferred embodiment of the dredge mechanism for initiator injection line plugging provided by the present invention;
FIG. 2 is an enlarged partial view of the trigger injection line plugging deoccluding device provided in FIG. 1;
FIG. 3 is a schematic structural diagram of another preferred embodiment of the dredging device for initiator injection line plugging provided by the present invention.
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 efforts belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 and fig. 2 together, the initiator injection line blockage dredging device 1 of the present embodiment includes a metal sleeve 11 and a sealing end cap 12 disposed at one end of the metal sleeve, preferably, an inner diameter of the metal sleeve 11 is larger than an outer diameter of the initiator injection line 2, so that the metal sleeve 11 is conveniently sleeved into the initiator injection line 2; preferably, the metal sleeve 11 is screwed with the end cap 12.
The middle part of the sealing end cover 12 of this embodiment is provided with a connecting piece 13 which runs through the sealing end cover and is used for connecting an initiator injection pipeline 2, the connecting piece 13 is provided with a first joint 14 which is communicated with the initiator injection pipeline 2, the first joint 14 is connected with a nitrogen pipeline 15, the sealing end cover 12 is further provided with a second joint 16 which runs through the sealing end cover, and the second joint 16 is connected with an overheated medium-pressure steam pipeline 17.
When the initiator injection pipeline is blocked, one end of the metal sleeve is sleeved from one end of the initiator injection pipeline, then the connecting piece of the sealing end cover is aligned to the initiator injection pipeline, the connecting piece is butted with the initiator injection pipeline, and finally the sealing end cover and the metal sleeve are screwed tightly. In the embodiment, when dredging is performed, the second joint on the sealing end cover is firstly used for connecting the superheated medium-pressure steam pipeline, the superheated medium-pressure steam is introduced into the metal sleeve, the initiator injection pipe is heated, so that the blockage in the initiator injection pipeline is changed from solid to molten liquid (by using the characteristic of low melting point of the blockage of the initiator injection pipeline), then the first joint on the connecting piece is used for connecting the nitrogen pipeline, and nitrogen is filled into the initiator injection pipeline for purging, so that the dredging of the initiator injection pipeline is realized.
Preferably, the second connector 14 of the present embodiment is screwed with the end cap 12, and the first connector 16 is screwed with the connecting member 13.
Preferably, the connecting member 13 is screwed to the sunken flange of the end cap 12.
Preferably, the end of the connecting piece 13 facing the metal sleeve 11 is provided with a cavity 130 for accommodating the initiator injection line 2, and the first joint 16 is communicated with the cavity 130.
Further, a rubber sleeve 18 is further arranged in the cavity 130, the rubber sleeve 18 can be tightly attached to the outer wall of the initiator injection pipeline 2 when the initiator injection pipeline 2 is arranged in the cavity 130, and the rubber sleeve 18 ensures the sealing connection between the connecting piece 13 and the initiator injection pipeline 2 by using the elasticity thereof.
In another embodiment, referring to fig. 3, the diameter of the metal sleeve 11 decreases from one end of the end cap 12 to the other end, and the metal sleeve is designed to be a reducing metal sleeve, so that the heating effect of the superheated medium-pressure steam is better than that of the equal-diameter metal sleeve.
It is worth noting that: when the initiator injection pipeline is blocked, the device is utilized to dredge, and then the pumping pipeline of the initiator pump is connected after dredging.
The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes made by the present specification can be changed, or directly or indirectly applied to other related technical fields, and all the same principles are included in the protection scope of the present invention.
Claims (7)
1. The utility model provides an initiator injection line dredging device for jam which characterized in that: include metal casing and the end cover who locates metal casing one end, end cover's middle part is equipped with and runs through end cover's the connecting piece that is used for connecting initiator injection line, be equipped with the first joint of intercommunication initiator injection line on the connecting piece, first articulate nitrogen gas pipeline, still be equipped with on the end cover of sealing and run through end cover's second connects, the overheated middling pressure steam line of second articulate.
2. The trigger injection line plugging pull through of claim 1, wherein: the inner diameter of the metal sleeve is larger than the outer diameter of the initiator injection line.
3. The trigger injection line plugging pull through of claim 1, wherein: the metal sleeve is in threaded connection with the sealing end cover.
4. The trigger injection line block-out pull throughs of claim 1, wherein: the second joint is in threaded connection with the sealing end cover, and the first joint is in threaded connection with the connecting piece.
5. The trigger injection line block-out pull throughs of claim 1, wherein: one end of the connecting piece facing the metal sleeve is provided with a containing cavity for containing the initiator injection pipeline, and the first joint is communicated with the containing cavity.
6. The trigger injection line block-out pull throughs of claim 5, wherein: the container cavity is also internally provided with a rubber sleeve which can be tightly attached to the outer wall of the initiator injection pipeline when the initiator injection pipeline is arranged in the container cavity.
7. The dredging device for blocking the initiator injection pipeline according to any one of claims 1 to 6, wherein: the diameter of the metal sleeve decreases from one end of the sealing end cover to the other end of the sealing end cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922056235.3U CN211802824U (en) | 2019-11-26 | 2019-11-26 | Dredging device for blocking initiator injection pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922056235.3U CN211802824U (en) | 2019-11-26 | 2019-11-26 | Dredging device for blocking initiator injection pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211802824U true CN211802824U (en) | 2020-10-30 |
Family
ID=73026929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922056235.3U Active CN211802824U (en) | 2019-11-26 | 2019-11-26 | Dredging device for blocking initiator injection pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211802824U (en) |
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2019
- 2019-11-26 CN CN201922056235.3U patent/CN211802824U/en active Active
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