CN210464809U

CN210464809U - Leak detection device for pressure gauge shell

Info

Publication number: CN210464809U
Application number: CN201921910693.2U
Authority: CN
Inventors: 倪盛平; 李军
Original assignee: Wuxi Kaifeng Electric Technology Co ltd
Current assignee: Wuxi Kaifeng Electric Technology Co ltd
Priority date: 2019-11-07
Filing date: 2019-11-07
Publication date: 2020-05-05
Anticipated expiration: 2029-11-07

Abstract

The utility model discloses a manometer casing leak hunting device belongs to manometer gas tightness detection technical field. The pressure gauge shell leak detection device comprises a bottom plate, a base, a lifting pressing mechanism and a leak detection mechanism, wherein the bottom plate plays a supporting role; the base is fixed on the bottom plate, and the shell to be detected is placed on the base through the sealing assembly; the lifting pressing mechanism can press and release the shell placed on the base; and the leakage detection mechanism detects the leakage of the shell pressed on the base. The utility model provides a pair of pressure gauge shell physical examination leak hunting device, through the operation lift hold-down mechanism can with the casing compresses tightly on the base, and utilize leak hunting mechanism is right the casing is carried out the operation of hunting leak, and the leak hunting is ended lift hold-down mechanism loosens the casing carries out the clamping and dismantles with cover ring subassembly and manometer casing through anchor clamps for traditional manual work, has greatly simplified operation process, labour saving and time saving.

Description

Leak detection device for pressure gauge shell

Technical Field

The utility model relates to a manometer gas tightness detects technical field, in particular to manometer casing leak hunting device.

Background

At present, shell body leakage detection of a shell assembly is to manually install a cover ring assembly on the shell assembly by using a clamp, then the shell assembly is installed on a leakage detection joint for leakage detection, the leakage detection is finished, then the cover ring assembly is manually disassembled by using the clamp, and time, labor and labor are wasted.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a manometer casing leak hunting device to need artifically to install and dismantle the cover circle subassembly when solving current watchcase subassembly leak hunting, waste time and energy, the problem of inefficiency.

In order to solve the technical problem, the utility model provides a manometer casing leak hunting device, include:

the bottom plate plays a supporting role;

the base is fixed on the bottom plate, and the shell to be detected is placed on the base through the sealing assembly;

the lifting pressing mechanism can press and release the shell placed on the base;

and the leakage detection mechanism is used for detecting leakage of the shell pressed on the base.

Optionally, the lifting and pressing mechanism includes:

the upright posts are all fixed on the bottom plate;

the fixing plate is fixedly connected to the top ends of the plurality of upright columns;

the cylinder is fixedly arranged on the fixing plate; the bottom end of the cylinder telescopic rod is fixedly connected with a movable plate;

and the pressure head is fixed at the bottom of the movable plate and used for pressing the shell placed on the base.

Optionally, the ram comprises:

the head pressing plate is fixedly connected to the bottom of the movable plate through a bolt;

the two connecting arms are symmetrically connected to two sides of the pressure head plate;

the compression ring is fixedly connected with the bottom end of the connecting arm, and the shape and the size of the compression ring are matched with the shell.

Optionally, the leak detection mechanism includes:

one end of the leakage detecting joint is in sealing connection with the air hole of the shell through threads;

the leak detection joint is connected with an external leak detector;

the adapter, leak hunting connects through the adapter with leak hunting nipple intercommunication.

Optionally, a third O-ring seal is sleeved at the tail end of the thread at one end of the leak detection joint close to the casing.

Optionally, a sleeve of the leak detection joint, which is far away from the shell, is sleeved in the adapter, and a plurality of first O-shaped sealing rings are tightly sleeved on the outer surface of one end of the leak detection joint, which is located in the adapter; the leak detection joint is close to the surface of adapter one end is equipped with first retaining ring, there is coupling nut the surface of adapter through threaded connection, coupling nut is close to the one end of casing is connected with the second retaining ring, just the internal diameter of second retaining ring is less than the external diameter of first retaining ring.

Optionally, the outer surface of the adapter is further connected with an adjusting nut through threads, and the adjusting nut is the same as the connecting nut in thread type.

Optionally, the outer surface of the leak detection joint is fixedly connected with a hand wheel for rotating the leak detection joint.

Optionally, the seal assembly comprises:

the boss is fixedly arranged at the top of the base, and the outer diameter of the boss is matched with the inner diameter of the opening at the bottom of the shell;

the annular groove is formed at the root part of the boss;

a second O-ring seal disposed within the annular groove.

The utility model provides a pair of manometer casing leak hunting device has following beneficial effect:

(1) the shell can be pressed on the base through operation of the lifting pressing mechanism, the shell is subjected to leak detection operation through the leak detection mechanism, the lifting pressing mechanism loosens the shell after leak detection is finished, and compared with the traditional method that a cover ring assembly and a pressure gauge shell are clamped and disassembled through a clamp manually, the operation process is greatly simplified, and time and labor are saved;

(2) through setting up coupling nut adjusting nut with the hand wheel is favorable to the leak hunting nipple with the casing carries out sealing connection and dismantlement, has greatly improved work efficiency.

Drawings

Fig. 1 is a schematic structural diagram of a leak detection device for a pressure gauge shell, which is provided by the present invention;

FIG. 2 is a cross-sectional view of the connection structure of the housing and the leak detection mechanism;

FIG. 3 is an enlarged view of a portion of FIG. 2;

fig. 4 is a schematic view of the structure of the indenter.

Detailed Description

The leakage detecting device for the casing of the pressure gauge provided by the present invention is further described in detail with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more fully apparent from the following description and appended claims. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention.

Example one

The utility model provides a pressure gauge shell leak detection device, the structure of which is shown in figure 1, and the device comprises a bottom plate 1, a base 2, a lifting pressing mechanism and a leak detection mechanism, wherein the bottom plate 1 plays a supporting role; the base 2 is fixed on the bottom plate 1, and the shell 3 to be detected is placed on the base 2 through a sealing assembly; the lifting pressing mechanism can press and release the shell 3 placed on the base 2; the leakage detection mechanism detects leakage of the shell 3 pressed on the base 2.

Specifically, the lifting and pressing mechanism comprises a plurality of upright posts 50, a fixing plate 51, an air cylinder 52 and a pressure head 54, wherein the upright posts 50 are all fixed on the bottom plate 1; the fixed plate 51 is fixedly connected to the top ends of the plurality of upright posts 50; the cylinder 52 is fixedly arranged on the fixed plate 51; a movable plate 53 is fixedly connected to the bottom end of the telescopic rod of the cylinder 52, and a plurality of linear bearings 55 are mounted on the movable plate 53 and slidably connected with the upright column 50; the pressing head 54 is fixed to the bottom of the movable plate 53, and is used for pressing the housing 3 placed on the base 2.

Referring to fig. 4, the pressing head 54 includes a pressing head plate 540, two connecting arms 541 and a pressing ring 542, and the pressing head plate 540 is fixedly connected to the bottom of the movable plate 53 through bolts; the two connecting arms 541 are symmetrically connected to two sides of the head pressing plate 540; the clamping ring 542 is fixedly connected with the bottom end of the connecting arm 541, and the clamping ring 542 is matched with the shell 3 in shape and size.

Referring to fig. 2, the leak detection mechanism includes a leak detection joint 40, a leak detection joint 41 and an adapter 42, and one end of the leak detection joint 40 is hermetically connected with the air hole 30 of the housing 3 through a thread; the leak detection joint 41 is connected with an external leak detector; leak hunting connect 40 through adapter 42 with leak hunting nipple 41 intercommunication, adapter 42 with leak hunting is connected through the trachea between 41. Preferably, a third O-ring 49 is sleeved on the threaded tail end of the leak detection joint 40 near one end of the casing 3, please refer to fig. 3; the joints of the air pipe, the adapter 42 and the leak detection adapter 41 are sealed by silver brazing.

A end of the leak detection joint 40 away from the shell 3 is sleeved in the adapter 42, and a plurality of first O-shaped sealing rings 43 are tightly sleeved on the outer surface of one end of the leak detection joint 40 in the adapter 42; leak hunting joint 40 is close to the surface of adapter 42 one end is equipped with first retaining ring 44, there is coupling nut 45 adapter 42's surface through threaded connection, coupling nut 45 is close to the one end of casing 3 is connected with second retaining ring 46, just the internal diameter of second retaining ring 46 is less than the external diameter of first retaining ring 44.

Referring to fig. 2, an adjusting nut 47 is further connected to the outer surface of the adapter 42 through a thread, and the adjusting nut 47 and the connecting nut 45 have the same thread type, so as to assist the connecting nut 45 in achieving connection between two ends of the leak detection joint 40 and the casing 3 and the leak detection nipple 41, respectively, and prevent looseness of the threaded connection between the connecting nut 45 and the adapter 42. A handwheel 48 is fixedly connected to the outer surface of the leak detection joint 40 and used for rotating the leak detection joint 40.

The sealing assembly comprises a boss 60, an annular groove 61 and a second O-shaped sealing ring 62, the boss 60 is fixedly arranged at the top of the base 2, and the outer diameter of the boss 60 is matched with the inner diameter of the bottom opening of the shell 3; the annular groove 61 is formed at the root of the boss 60; the second O-ring seal 62 is placed in the annular groove 61.

The working principle is as follows: the shell 3 to be subjected to leak detection is placed on the base 2, the bottom opening of the shell 3 is sleeved outside the boss 60, the cylinder 52 is started, and the telescopic rod of the cylinder 52 drives the movable plate 53 and the pressure head 54 to descend along the vertical direction until the shell 3 is pressed on the base 2. The pine of unscrewing coupling nut 45 with adjusting nut 47 rotates hand wheel 48 drives leak hunting connects 40 rotatoryly, makes leak hunting connect 40 with the gas pocket 30 zonulae occludens of casing 3, reverse rotation coupling nut 45 with adjusting nut 47 screws up, realizes leak hunting connect 40 with adapter 42 zonulae occludens. And starting an external leak detector, vacuumizing the shell 3 and detecting the leak of a welding position.

The utility model provides a pair of manometer casing leak hunting device, through the operation lift hold-down mechanism can with casing 3 compresses tightly on the base 2, and utilize leak hunting mechanism is right casing 3 carries out the operation of hunting leak, and the leak hunting is ended lift hold-down mechanism loosens casing 3 carries out the clamping and dismantles with cover ring subassembly and manometer casing through anchor clamps for traditional manual work, has greatly simplified operation process, labour saving and time saving. Meanwhile, through the arrangement of the connecting nut 45, the adjusting nut 47 and the hand wheel 48, the leak detection joint nozzle 41 and the shell 3 are in sealing connection and detachment, and the working efficiency is greatly improved.

The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and any modification and modification made by those skilled in the art according to the above disclosure are all within the scope of the claims.

Claims

1. The utility model provides a manometer casing leak hunting device which characterized in that manometer casing leak hunting device includes:

the bottom plate (1) plays a supporting role;

the base (2) is fixed on the bottom plate (1), and the shell (3) to be detected is placed on the base (2) through a sealing component;

the lifting pressing mechanism can press and release the shell (3) placed on the base (2);

and the leakage detection mechanism is used for detecting leakage of the shell (3) pressed on the base (2).

2. The leak detection device for the pressure gauge shell according to claim 1, wherein the lifting and pressing mechanism comprises:

the upright posts (50) are all fixed on the bottom plate (1);

the fixing plate (51) is fixedly connected to the top ends of the plurality of upright columns (50);

the cylinder (52) is fixedly arranged on the fixed plate (51); the bottom end of the telescopic rod of the cylinder (52) is fixedly connected with a movable plate (53);

and the pressure head (54) is fixed at the bottom of the movable plate (53) and is used for pressing the shell (3) placed on the base (2).

3. A leak detection apparatus for a pressure gauge housing as claimed in claim 2, wherein said ram (54) comprises:

a head pressing plate (540) fixedly connected to the bottom of the movable plate (53) through bolts;

two connecting arms (541) symmetrically connected to two sides of the head pressing plate (540);

clamping ring (542), with the bottom fixed connection of linking arm (541), just the shape, the size of clamping ring (542) with casing (3) phase-match.

4. The leak detection apparatus for a pressure gauge case according to claim 1, wherein said leak detection mechanism comprises:

the leak detection joint (40), one end of the leak detection joint (40) is connected with the air hole (30) of the shell (3) in a sealing mode through threads;

a leak detection nozzle (41) connected to an external leak detector;

adapter (42), leak hunting connect (40) through adapter (42) with leak hunting nipple (41) intercommunication.

5. A leak detection device for a pressure gauge shell according to claim 4, characterized in that the threaded end of the leak detection joint (40) near the end of the shell (3) is provided with a third O-ring (49).

6. The leak detection device for the pressure gauge shell according to claim 4, wherein a end of the leak detection joint (40) far away from the shell (3) is sleeved in the adapter (42), and a plurality of first O-shaped sealing rings (43) are tightly sleeved on the outer surface of one end of the leak detection joint (40) located in the adapter (42); leak hunting joint (40) are close to the surface of adapter (42) one end is equipped with first retaining ring (44), there is coupling nut (45) on the surface of adapter (42) through threaded connection, coupling nut (45) are close to the one end of casing (3) is connected with second retaining ring (46), just the internal diameter of second retaining ring (46) is less than the external diameter of first retaining ring (44).

7. Leak detection device for a pressure gauge housing according to claim 6, characterized in that an adjusting nut (47) is also screwed onto the outer surface of the adapter (42), the adjusting nut (47) being of the same type of thread as the coupling nut (45).

8. Leak detection apparatus for a pressure gauge housing according to claim 7, characterized in that a handwheel (48) is fixedly connected to the outer surface of the leak detection joint (40) for rotating the leak detection joint (40).

9. A pressure gauge housing leak detection apparatus as defined in claim 1, wherein said seal assembly comprises:

the boss (60) is fixedly arranged at the top of the base (2), and the outer diameter of the boss (60) is matched with the inner diameter of the bottom opening of the shell (3);

an annular groove (61) formed at the root of the boss (60);

a second O-ring seal (62) disposed within the annular groove (61).