CN219119580U

CN219119580U - Tank top flange mounting mechanism for PSA nitrogen making device

Info

Publication number: CN219119580U
Application number: CN202223512603.9U
Authority: CN
Inventors: 刘园元; 臧谦谦
Original assignee: Nantong Gelin Marine Engineering Co ltd
Current assignee: Nantong Gelin Marine Engineering Co ltd
Priority date: 2022-12-28
Filing date: 2022-12-28
Publication date: 2023-06-02
Anticipated expiration: 2032-12-28

Abstract

The utility model discloses a tank top flange mounting mechanism for a PSA nitrogen making device, which comprises a tank shell and a tank top flange, wherein the tank top manhole flange is fixedly connected to the outer walls of the two sides of the tank shell, an internal threaded hole is formed in the tank top manhole flange, a stud is arranged in the internal threaded hole, a double-nut assembly for fixing the tank top flange is arranged on the circumferential outer wall of the stud, the double-nut assembly comprises a first nut and a second nut, the first nut and the second nut are in threaded connection with the stud, and the stud is in threaded connection with the internal threaded hole. The utility model can make all the internal threaded holes 7 of the tank top manhole flange 3 exert stress, and avoid the condition that the traditional installation process uses hexagonal bolts to screw in the prior stage one by one so as to cause less stress threads and damage the bolts and the internal threaded holes 7, thereby leading the whole tank top manhole flange 3 to be scrapped.

Description

Tank top flange mounting mechanism for PSA nitrogen making device

Technical Field

The utility model relates to the technical field of tank top flange installation, in particular to a tank top flange installation mechanism for a PSA nitrogen making device.

Background

With the increasing global energy demands, the demands of nitrogen production plants are also increasing as the wellbores of tanker chemical ships and LNG power and transport ships are increasing.

The prior PSA tank internal carbon molecular sieve adopts a bolt fastening compression method (see figure I), the bolt fastening compression method is easy to damage internal threads of a tank top manhole flange, and then the risk of scrapping products can be caused, therefore, the process is applied to the flange installation at the top of the tank body of the PSA nitrogen making device, complex tool application can be effectively avoided, and unnecessary product reworking is avoided.

Disclosure of Invention

The utility model aims to solve the defects in the prior art, and provides a flange mounting mechanism for the top of a tank body of a PSA nitrogen making device.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a be used for PSA nitrogen making device jar body top flange installation mechanism, includes tank shell and tank top flange, the equal fixedly connected with tank top manhole flange of both sides outer wall of tank shell, the internal thread hole has been seted up to the inside of tank top manhole flange, and internal thread hole is equipped with the double-screw bolt, and the circumference outer wall of double-screw bolt is equipped with the double-screw nut subassembly of fixed tank top flange.

As still further aspects of the present utility model, the double nut assembly includes a first nut and a second nut, both of which are threadedly connected with the stud.

As a still further scheme of the utility model, the stud is in threaded connection with the internal threaded hole.

As a still further aspect of the utility model, the tank top flange is sleeved on two studs.

As a still further aspect of the present utility model, a carbon molecular sieve is disposed inside the shell.

As a still further aspect of the utility model, the carbon molecular sieve may be conformable to a tank top flange.

The beneficial effects of the utility model are as follows:

1. the tank top flange 6 is compressed by the fastening force of the bolts, so that the bolts can be compressed at the same time diagonally, damage to the tank top flange 6 is avoided, and the fixing effect of the mechanism is improved.

2. The stud 5 is firstly arranged on the internal threaded hole 7 of the tank top manhole flange 3, and the whole screw threads are screwed in, so that all the internal threaded holes 7 of the tank top manhole flange 3 exert a stress effect, and the conditions that the screw threads are fewer in the beginning stage and the screw threads are damaged by using the hexagonal head screw threads in the traditional installation process, so that the whole tank top manhole flange 3 is scrapped and needs to be replaced are avoided.

Drawings

FIG. 1 is a schematic diagram of a prior art mounting structure for a flange mounting mechanism on top of a tank of a PSA nitrogen making apparatus;

FIG. 2 is a schematic diagram of a first construction of a flange mounting mechanism for a top flange of a tank of a PSA nitrogen making apparatus according to the present utility model;

fig. 3 is a second schematic structural view of a flange mounting mechanism for the top of a tank of a PSA nitrogen generator according to the present utility model.

In the figure: 1. a can shell; 2. a carbon molecular sieve; 3. a tank top manhole flange; 4. a first nut; 5. a stud; 6. a tank top flange; 7. an internal threaded hole; 8. and a second nut.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. It should be noted that the terms "mounted," "connected," and "disposed" are to be construed broadly, unless explicitly stated or defined otherwise, and that the particular meaning of such terms in this patent will be understood by those of ordinary skill in the art, as appropriate.

Referring to fig. 2-3, a tank top flange mounting mechanism for a PSA nitrogen making device comprises a tank shell 1 and a tank top flange 6, wherein the tank top manhole flange 3 is fixed on the outer walls of two sides of the tank shell 1 through bolts, an internal threaded hole 7 is formed in the tank top manhole flange 3, a stud 5 is arranged in the internal threaded hole 7, a double-nut assembly for fixing the tank top flange 6 is arranged on the circumferential outer wall of the stud 5, the tank top flange 6 is compressed by using the fastening force of the bolt, the opposite angles can be compressed simultaneously, and damage to the tank top flange 6 is avoided.

According to the utility model, the double-nut assembly comprises a first nut 4 and a second nut 8, the first nut 4 and the second nut 8 are in threaded connection with the studs 5, the studs 5 are in threaded connection with the internal threaded holes 7, the tank top flange 6 is sleeved on the two studs 5, the carbon molecular sieve 2 is arranged in the tank shell 1, the studs 5 are firstly arranged on the internal threaded holes 7 of the tank top manhole flange 3, and all threads are screwed in, so that all the internal threaded holes 7 of the tank top manhole flange 3 exert a stress effect, the situation that the traditional installation process uses hexagonal head bolts to screw in the number of stressed threads at the beginning stage in a thread-by-thread manner, the bolts and the internal threaded holes 7 are damaged is avoided, the whole tank top manhole flange 3 is scrapped, the situation that replacement is needed is avoided, the carbon molecular sieve 2 and the tank top flange 6 can be attached, the carbon molecular sieve 2 is installed and compressed, and the leakage of the carbon molecular sieve 2 is avoided.

Working principle: when the installation is needed, the stud 5 and the double-nut assembly are used for installing the tank top flange 6 and compressing the carbon molecular sieve 2, the stud 5 is firstly fixed on the tank top manhole flange 3, then the tank top flange 6 is sleeved on the stud 5, the tank top flange 6 is firstly compressed downwards by the first nut 4 (figure two), and then the second nut 8 is installed for preventing loosening after the compression is in place (figure three).

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. The utility model provides a be used for PSA nitrogen making device jar body top flange installation mechanism, includes shell (1) and tank deck flange (6), its characterized in that, the equal fixedly connected with tank deck manhole flange (3) of both sides outer wall of shell (1), internal thread hole (7) have been seted up to the inside of tank deck manhole flange (3), are equipped with double-screw bolt (5) in internal thread hole (7), and the circumference outer wall of double-screw bolt (5) is equipped with the double-screw nut subassembly of fixed tank deck flange (6).

2. A tank top flange mounting mechanism for a PSA nitrogen plant according to claim 1, characterized in that the double nut assembly comprises a first nut (4) and a second nut (8), both the first nut (4) and the second nut (8) being in threaded connection with the stud (5).

3. A tank top flange mounting mechanism for a PSA nitrogen plant according to claim 1, characterized in that the stud (5) is screwed with an internally threaded hole (7).

4. A tank top flange mounting mechanism for a PSA nitrogen plant according to claim 1, characterized in that the tank top flange (6) is sleeved on two studs (5).

5. The flange mounting mechanism for the top of a tank body of a PSA nitrogen making device according to claim 1, wherein a carbon molecular sieve (2) is arranged inside the tank shell (1).

6. A tank top flange mounting mechanism for a PSA nitrogen plant according to claim 5, wherein the carbon molecular sieve (2) is conformable to the tank top flange (6).