CN217424746U

CN217424746U - Pressure testing device for breather valve

Info

Publication number: CN217424746U
Application number: CN202221470029.2U
Authority: CN
Inventors: 左宇航; 尤德峰; 钟东坡; 张锟浩; 崔志伟; 苏继方
Original assignee: Luoyang Cimc Linyu Automobile Co ltd
Current assignee: Luoyang Cimc Linyu Automobile Co ltd
Priority date: 2022-06-13
Filing date: 2022-06-13
Publication date: 2022-09-13
Anticipated expiration: 2032-06-13

Abstract

The utility model discloses a pressure test device for a breather valve, which comprises a pressure vessel, a pressing mechanism, a pressure mechanism and a vacuum mechanism, wherein the pressure vessel comprises a cylinder body and a mounting hole communicated with the cylinder body, and the mounting hole is used for mounting the breather valve; the pressing mechanism is arranged on the periphery of the mounting hole and used for pressing and fixing the breather valve; the pressure mechanism comprises a first passage communicated with the barrel, a pressure gauge arranged on the first passage, a first one-way valve and a first switch; the vacuum mechanism comprises a second passage communicated with the cylinder body, a vacuum meter arranged on the second passage, a second one-way valve and a second switch. The pressure mechanism and the vacuum mechanism are clamped for one time, two tests of pressure resistance and vacuum of the breather valve can be realized by adjusting the first ball valve and the second ball valve, secondary clamping is avoided, and efficiency is improved. The first check valve and the second check valve respectively protect the pressure gauge and the vacuum gauge, and the service life of the pressure gauge and the vacuum gauge is prolonged. The breather valve is installed on the mounting hole, compresses tightly the back alright test, connects simply simple to operate.

Description

Pressure testing device for breather valve

Technical Field

The utility model relates to a pressure testing technical field, in particular to breather valve pressure testing device.

Background

The breather valve is a valve which not only ensures that the space of the storage tank is isolated from the atmosphere within a certain pressure range, but also can be communicated with the atmosphere when the pressure exceeds or is lower than the pressure range. The air pressure balance control device is mainly used on a hazardous chemical tank type transport vehicle, can maintain the air pressure balance of a hazardous chemical tank body, ensures that the tank body is prevented from being damaged under overpressure and vacuum, can reduce the volatilization loss of a medium in the tank, and meets the ventilation requirement of large and small respiration of the tank body. The breather valve principle is to control the positive exhaust pressure and negative intake pressure of the tank truck by using the weight of the positive and negative valve discs. When the tank body discharges media, the internal pressure is reduced, and the breather valve opens the valve under the action of negative pressure, so that the internal pressure and the external pressure are balanced; when the pressure in the tank rises due to medium volatilization or other reasons in the tank body, the breather valve is opened due to positive pressure, so that the internal pressure and the external pressure are balanced, and the safety of the tank body is ensured.

The breather valve can be used for assembling the whole vehicle only if the pressure resistance detection and the vacuum resistance detection are qualified. The detection process of traditional breather valve needs to install the breather valve respectively in proper order and accomplish withstand voltage pressure testing and vacuum pressure testing detection respectively on withstand voltage pressure testing device and the vacuum pressure testing device, and whole detection process need carry out twice installation and dismantlement to the breather valve at least, and operation process is loaded down with trivial details, and efficiency is lower.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a breather valve pressure testing device that inspection efficiency is high.

The utility model provides a breather valve pressure testing device, include:

the pressure container comprises a cylinder body, wherein the top of the cylinder body is provided with a mounting hole communicated with the cylinder body, and the mounting hole is used for mounting a breather valve;

the compression mechanism is arranged on the periphery of the mounting hole and used for compressing and fixing the breather valve;

the pressure mechanism comprises a first passage communicated with the cylinder, and a pressure gauge, a first one-way valve and a first switch which are arranged on the first passage, wherein the first one-way valve is communicated with the pressure gauge in one way from the pressure container; the first switch enables the first passage to be communicated with the outside or closed;

the vacuum mechanism comprises a second passage communicated with the cylinder, and a vacuum meter, a second one-way valve and a second switch which are arranged on the second passage, wherein the second one-way valve is communicated with the pressure container in one way from the vacuum meter; the second switch connects or closes the second passage to the outside.

Furthermore, the mounting hole is arranged on one side of the top of the cylinder body, and an avoiding space for avoiding the breather valve is arranged between the mounting hole and the inner side wall of the other side of the cylinder body.

Further, the cylinder is a cylindrical container.

Furthermore, the pressing mechanisms are arranged in a plurality of numbers and are uniformly distributed along the peripheral sides of the mounting holes.

Further, the pressing mechanism comprises a pressing claw, a fastening column and a fastening piece; the pressure claw is used for pressing the breather valve, the fastening column is fixedly arranged on the top surface of the barrel body, and the fastening column penetrates through the pressure claw and is fixedly connected with the fastening piece.

Furthermore, the fastening column is in threaded connection with the fastening piece, and the outer side wall of the fastening piece is provided with a convex fin.

Further, the pressure claw includes supporting part and installation department, the supporting part with the top surface counterbalance of barrel is held, the one end of installation department is located on the supporting part, the other end of installation department is used for pressing and holds the top surface of breather valve.

Further, the installation department has seted up the mounting groove, the mounting groove is long and narrow, but fastening post slidable locates the mounting groove.

Furthermore, the pressure container is provided with a plurality of positioning blocks which are uniformly distributed around the mounting hole.

Furthermore, the top of the positioning block is provided with a chamfer.

According to the technical scheme, the invention at least has the following advantages and positive effects:

firstly, through once the clamping to pressure mechanism and vacuum mechanism, can realize the withstand voltage of breather valve and two kinds of tests in vacuum through adjusting first ball valve and second ball valve, avoid secondary clamping, raise the efficiency.

Secondly, the first check valve and the second check valve respectively protect the pressure gauge and the vacuum gauge, and the service life of the pressure gauge and the vacuum gauge is prolonged.

And finally, the breather valve is arranged on the mounting hole, and the test can be performed after the breather valve is compressed, so that the connection is simple and the installation is convenient.

Drawings

Fig. 1 is a perspective view of a pressure test breather valve device according to an embodiment of the present invention.

Fig. 2 is a front view of a pressure-testing breather valve apparatus according to an embodiment of the present invention.

Fig. 3 is a top view of fig. 1.

Fig. 4 is a sectional view taken along line a-a of fig. 2.

The reference numerals are explained below: 100. a breather valve pressure testing device; 10. a pressure resistant vessel; 11. a barrel; 111. mounting holes; 12. a support leg; 13. a pressing mechanism; 131. pressing claws; 1311. a support portion; 1312. an installation part; 1313. mounting grooves; 132. fastening a bolt; 133. fastening a nut; 1331. a convex wing; 14. a pressure mechanism; 141. a pressure gauge; 142. a first check valve; 143. a first tee joint; 144. a first ball valve; 15. a vacuum mechanism; 151. a vacuum gauge; 152. a second one-way valve; 153. a second tee joint; 154. a second ball valve; 16. a seal ring; 17. positioning blocks; 200. a breather valve.

Detailed Description

Exemplary embodiments that embody features and advantages of the invention are described in detail below. It is understood that the invention is capable of other and different embodiments and its several details are capable of modification in various other respects, all without departing from the scope of the present invention, and that the description and drawings are to be taken as illustrative and not restrictive in character.

In the description of the present application, it is to be understood that the indications of directions or positional relationships (such as up, down, left, right, front, rear, and the like) in the embodiments shown in the drawings are merely for convenience of description and simplicity of description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated. These descriptions are appropriate when the elements are in the positions shown in the drawings. If the description of the positions of these elements changes, the indication of these directions changes accordingly.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

The present invention will be further explained in detail with reference to the accompanying drawings.

Referring to fig. 1, a pressure testing apparatus 100 for a breather valve is used for performing pressure and vacuum tests on a breather valve to be tested, where the breather valve to be tested may be a cross-country breather valve, an all-weather breather valve, or other types of breather valves, and the types of the breather valves are not limited herein.

The breather valve pressure test apparatus 100 of the present embodiment includes a pressure vessel 10, a pressing mechanism 13, a pressure mechanism 14, a vacuum mechanism 15, a seal ring 16, and a positioning block 17. The breather valve pressure test apparatus 100 according to the present embodiment is configured such that the breather valve 200 is attached to the pressure vessel 10 via the pressure mechanism 13. The pressure structure 14 and the vacuum mechanism 15 are also attached to the pressure vessel 10, and the pressure structure 14 and the vacuum mechanism 15 can be conducted to the pressure vessel 10, and can be tested separately. Therefore, the pressure testing device 100 can perform pressure resistance and vacuum test on the breather valve 200. The breather valve 200 to be tested is installed at one time, and two experiments of pressure resistance test and vacuum resistance test can be realized. The breather valve pressure testing device 100 avoids secondary disassembly and assembly of the breather valve 200, and improves the working efficiency.

The pressure vessel 10 includes a cylinder 11 and legs 12. The barrel 11 is an inner hollow vessel and the exterior may be shown as cylindrical or rectangular, etc. Barrel 11 is cylindrical in this embodiment, and the purpose is the simulation hazardous articles transport vechicle jar body, improves the holistic intensity of barrel 11 simultaneously, prevents to warp. The legs 12 are welded to the bottom of the barrel 11 for supporting the barrel 11. The landing leg 12 is equipped with a plurality ofly, and landing leg 12 is four in this embodiment, guarantees to support steadily.

The top of the cylinder 11 is provided with a mounting hole 111 communicated with the cylinder 11. The mounting hole 111 is used for mounting the breather valve 200, so that the breather valve 200 is communicated with the cylinder body 11; the mounting hole 111 is provided near the edge of the cylinder 11. The mounting hole 111 is disposed near one side of the top of the cylinder 11, and an avoiding space for avoiding the breather valve 200 is formed between the mounting hole 111 and the inner side wall of the other side of the cylinder 11. The purpose of the avoiding space is to ensure that the breather valve pressure testing device 100 can be suitable for the breather valve 200 with the elbow of the cross-country breather valve, and the installation space is reserved for the cross-country breather valve, so that the adaptability is wider. Meanwhile, in order to avoid interference between the cylinder 11 and the off-road breather valve 200, the size of the cylinder 11 is increased, and the cost is increased.

Referring to fig. 2 and 3, the pressing mechanism 13 is disposed at the top of the cylinder 11 and disposed around the mounting hole 111 for pressing and fixing the breather valve 200. The pressing mechanisms 13 are provided with a plurality of pressing mechanisms, and the number of the pressing mechanisms 13 is three in the embodiment, so that the pressing can be more stable when the breather valve 200 is installed.

The pressing mechanism 13 includes a pressing claw 131, a fastening post, and a fastener. The fastening column and the fastening piece are used for pressing the pressing claw 131, so that the pressing claw 131 presses and fixes the breather valve 200 to be tested. The fastening column of the present embodiment is a fastening bolt 132, and the fastening member is a fastening nut 133. The fastening bolt 132 is welded on the barrel 11, and the fastening bolt 132 is prevented from penetrating through the barrel 11 and affecting the overall air tightness of the barrel 11, so that the experimental accuracy is affected. The airtightness of the entire cylinder 11 is ensured by welding. The fastening bolt 132 and the fastening nut 133 are screwed together. The fastening nut 133 is provided with a protruding fin 1331 to facilitate rotation of the fastening nut 133.

In the present embodiment, the breathing valve 200 is clamped by using a screw clamping mechanism. In other embodiments, the pressing mechanism may also be a hinge clamping mechanism, a wedge clamping mechanism or a linkage clamping mechanism, for example, the fastening column and the fastener may be screwed together and may also be fixed by a snap connection or a wedge clamping.

The pressing claw 131 comprises a mounting part 1312 and a supporting part 1311 which are arranged perpendicularly to each other, wherein one end of the mounting part 1312 is used for pressing the flange end face of the breather valve 200; support 1311 abuts on cylinder 11, and support 1311 supports the other end of attachment 1312 to allow attachment 1312 to stabilize breather valve 200 in a horizontal state.

Mounting groove 1313 has been seted up to installation department 1312, and mounting groove 1313 is long and narrow, and fastening bolt 132 slidable locates on mounting groove 1313, and installation department 1312 can slide from top to bottom at fastening bolt 132 simultaneously, can not only compress tightly the flange terminal surface thickness of the breather valve 200 of fixed different models, slides at installation department 1312 and realizes advancing or when retreating, can conveniently be used for the installation of breather valve 200 and take off simultaneously for the operation is more nimble.

When the respiratory valve 200 is installed, the respiratory valve 200 is installed on the installation hole 111 by the pressing mechanism 13, the pressing claw 131 is adjusted to enable the pressing claw 131 to abut against the flange end face of the respiratory valve 200, the convex wing 1331 of the fastening nut 133 is screwed, the convex wing 1331 rotates in one direction, the fastening nut 133 is driven to move on the fastening bolt 132 towards the cylinder 11, and then the pressing claw 131 is pressed tightly, so that the pressing claw 131 abuts against the flange end face of the respiratory valve 200, and then the pressing and fixing are realized; when the breather valve 200 is dismounted, the convex fin 1331 of the fastening nut 133 is reversely screwed to drive the fastening nut 133 to move on the fastening bolt 132 in the direction away from the cylinder body 11, so that the pressing claw 131 is loosened, then the pressing claw 131 is adjusted to enable the pressing claw 131 to move away from the center of the mounting hole 111, and then the breather valve 200 is dismounted.

With continued reference to fig. 2 and 3, a pressure mechanism 14 is disposed on the top of the barrel 11 for detecting the pressure resistance of the breather valve 200. The pressure mechanism 14 includes a first passage communicating with the cylinder 11, and a pressure gauge 141, a first check valve 142, and a first switch provided in the first passage.

In this embodiment, the first path may be a first tee 143, and the first switch is a first ball valve 144; the first check valve 142 is one-way vented from the pressure container 10 to the pressure gauge 141. One end of the first ball valve 144 is communicated with the first tee 143, and the other end is communicated with the outside or closed.

In other embodiments, the first passage may be other types of pipeline passages, and is not limited to a tee. The first switch may also be other closed switches, such as a butterfly valve, a gate valve or a stop valve.

The vacuum mechanism 15 is arranged at the top of the cylinder body 11 and used for detecting the vacuum resistance of the breather valve 200; the vacuum mechanism 15 includes a second passage communicating with the cylinder 11, and a vacuum gauge 151, a second check valve 152, and a second switch provided in the second passage.

In this embodiment, the second path is a second tee 153, and the second switch is a second ball valve 154; the second single check valve is one-way vented from the vacuum gauge 151 to the pressure vessel 10, and one end of the second ball valve 154 is connected to the second tee 153 and the other end is connected to the outside or closed.

In other embodiments, the second passage may be other types of pipeline passages, and is not limited to a tee. The second switch may also be other closed switches, such as a butterfly valve, a gate valve or a stop valve.

During the pressure experiment, the first ball valve 144 is opened, the second ball valve 154 is closed, an external air source is opened to inflate the breather valve pressure testing device 100, the pressure value of the pressure gauge 141 is observed, and the maximum pressure value is recorded, which is the pressure resistant value of the breather valve 200. When the vacuum test is performed, the second ball valve 154 is opened, the first ball valve 144 is closed, an external air source is opened, air is pumped outwards from the interior of the breather valve pressure test device 100, the pressure value of the vacuum gauge 1511 is observed, and the maximum pressure value is recorded, namely the vacuum-resistant value of the breather valve 200.

Referring to fig. 4, a sealing groove is formed in the mounting hole 111, the sealing ring 16 is concentrically mounted on the mounting hole 111, the diameter of the sealing ring 16 is larger than that of the mounting hole 111, and the sealing ring 16 is mounted in the sealing groove, so that when the breather valve 200 is mounted, the sealing ring 16 contacts with the mounting surface of the breather valve 200, and a sealing effect is achieved.

The positioning blocks 17 are arranged in a plurality of numbers and are uniformly distributed around the mounting holes 111, the positioning blocks 17 are arranged in three numbers in the embodiment, the purpose is to ensure that the breather valve 200 can be stably mounted on the mounting holes 111, and the top of the positioning block 17 is provided with a chamfer so as to guide the breather valve 200 to be mounted on the mounting holes 111 conveniently.

Before pressure testing, firstly, the breather valve 200 is installed, the fastening nut 133 is screwed to drive the pressing claw 131 to tightly press the breather valve 200, so that the breather valve 200 is tightly attached to the sealing ring 16 and is installed in place; the first and

second ball valves

144 and 154, respectively, are each connected to an external gas source.

During the pressure test, the first ball valve 144 is opened, the second ball valve 154 is closed, an external air source is opened to charge air into the breather valve pressure test device 100, the pressure value of the pressure gauge 141 is observed, and the maximum pressure value is recorded, namely the pressure resistance value of the breather valve 200; and then comparing the recorded maximum pressure value with a design standard, judging whether the maximum pressure value is qualified or not, and closing an external air source.

The vacuum test can be performed without secondary clamping of the breather valve pressure test device 100.

When the vacuum test is performed, the second ball valve 154 is opened, the first ball valve 144 is closed, an external air source is opened, air is pumped outwards from the interior of the breather valve pressure test device 100, the pressure value of the vacuum gauge 151 is observed, the maximum pressure value is recorded, namely the vacuum-resistant value of the breather valve 200, then the recorded maximum pressure value is compared with the design standard, whether the breather valve is qualified or not is judged, and the external air source is closed.

After the test is completed, the connection with an external air source is disconnected, the first ball valve 144 or the second ball valve 154 is opened, the breather valve pressure testing device 100 is communicated with the external atmosphere, and when the internal air pressure and the external air pressure are balanced, the fastening nut 133 is unscrewed, and the breather valve 200 is loosened.

The above is only the feasible embodiment of the preferred of the present invention, not limiting the protection scope of the present invention, and all the changes of the equivalent structure made by the contents of the description and the drawings of the present invention are included in the protection scope of the present invention.

Claims

1. A breather valve pressure testing device, characterized by includes:

the pressure container comprises a cylinder body, the top of the cylinder body is provided with a mounting hole communicated with the cylinder body,

the mounting hole is used for mounting a breather valve;

2. The pressure testing device for the breather valve according to claim 1, wherein the mounting hole is formed in one side of the top of the cylinder body, and an avoiding space for avoiding the breather valve is formed between the mounting hole and the inner side wall of the other side of the cylinder body.

3. The pressure testing device for the breather valve of claim 1, wherein the cartridge is a cylindrical vessel.

4. The pressure testing device for the breather valve according to claim 1, wherein a plurality of the pressing mechanisms are provided, and the plurality of the pressing mechanisms are uniformly distributed along the peripheral side of the mounting hole.

5. The pressure testing device for the breather valve according to claim 1, wherein the compressing mechanism comprises a pressing claw, a fastening column and a fastening piece; the pressure claw is used for pressing and holding the breather valve, the fastening column is fixedly arranged on the top surface of the barrel body, and the fastening column penetrates through the pressure claw and is tightly connected with the fastening piece.

6. The breather valve pressure testing device according to claim 5, wherein the fastening column is in threaded connection with the fastening piece, and the outer side wall of the fastening piece is provided with a protruding fin.

7. The pressure testing device for the breather valve according to claim 5, wherein the pressure claw comprises a supporting portion and an installation portion, the supporting portion is abutted to the top surface of the cylinder body, one end of the installation portion is arranged on the supporting portion, and the other end of the installation portion is used for pressing the top surface of the breather valve.

8. The pressure testing device for the breather valve according to claim 7, wherein the mounting portion is provided with a mounting groove, the mounting groove is long and narrow, and the fastening column is slidably arranged in the mounting groove.

9. The pressure testing device for the breather valve according to claim 1, wherein a plurality of positioning blocks are arranged on the pressure vessel and are uniformly distributed around the mounting hole.

10. The pressure testing device for the breather valve according to claim 9, wherein a chamfer is arranged on the top of the positioning block.