CN216559584U

CN216559584U - Air tightness detection device for bridge girder

Info

Publication number: CN216559584U
Application number: CN202220638588.3U
Authority: CN
Inventors: 吴庆富; 李晓闯; 逯蓉; 李静宇; 韩艳红; 吴国耀; 高港; 彭珊
Original assignee: Henan Weihua Heavy Machinery Co Ltd
Current assignee: Henan Weihua Heavy Machinery Co Ltd
Priority date: 2022-03-23
Filing date: 2022-03-23
Publication date: 2022-05-17
Anticipated expiration: 2032-03-23

Abstract

A gas tightness detection device for a bridge girder comprises an air compressor, a sealing connecting piece, a pressure regulating valve, a solenoid valve A, a three-way pipe, a solenoid valve B and a self-sealing quick connector, wherein an air source outlet of the air compressor is correspondingly connected with an air inlet of the pressure regulating valve through the sealing connecting piece, an air outlet of the pressure regulating valve is correspondingly connected with an air inlet of the solenoid valve A through the sealing connecting piece, an air outlet of the solenoid valve A is correspondingly connected with an air inlet of the three-way pipe through the sealing connecting piece, a pressure gauge is arranged at a first air outlet of the three-way pipe, a second air outlet of the three-way pipe is correspondingly connected with an air inlet of the solenoid valve B through the sealing connecting piece, and an air outlet of the solenoid valve B is correspondingly communicated with one end of the girder through the sealing plug; this device can accomplish girder gas tightness detection by high-efficient low-cost.

Description

Air tightness detection device for bridge girder

Technical Field

The utility model relates to the technical field of crane manufacturing, in particular to an air tightness detection device for a bridge girder.

Background

It is known that bridge or gantry cranes, in use, may operate in environments containing corrosive gases, such as for transporting objects into pickling tanks, when the object enters the pickling bath, corrosive gas can be caused, the gas can corrode mechanical equipment in the crane bridge frame, if the crane bridge frame has strong air tightness, only the surface of the bridge frame can be corroded, so that the crane bridge can be found and maintained by workers in time, if corrosive gas enters the inside of the bridge due to poor air tightness of the crane bridge, the gas can cause damage to the structures and parts of the equipment inside the bridge, and because workers cannot observe the state of the equipment inside the bridge in time, therefore, the operation of the crane can be influenced, and further serious accidents are caused, so that the air tightness of the main beam in the bridge frame needs to be detected firstly when the crane is generally manufactured and produced;

when the air tightness of the main beam is detected in the prior art, the main beam is placed in a detection device for detection, and the detection device has the problem of large volume, so that the detection process is slow, and the detection cost is high due to more gas consumed;

therefore, in summary, there is a need in the market for a device that can accomplish the detection of the air tightness of the main beam with high efficiency and low cost.

Disclosure of Invention

In order to overcome the defects in the background art, the utility model discloses an air tightness detection device for a bridge girder.

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

the utility model provides a gas tightness detection device for crane span structure girder, contains air compressor machine, sealing connection, air-vent valve, solenoid valve A, three-way pipe, solenoid valve B and self sealss quick connector, the air supply export of air compressor machine corresponds through sealing connection with the air inlet of air-vent valve and is connected, and the gas outlet of air-vent valve corresponds through sealing connection and solenoid valve A's air inlet and is connected, and solenoid valve A's gas outlet corresponds through sealing connection and the air inlet of three-way pipe and is connected, and the first gas outlet of three-way pipe is equipped with the manometer, and the second gas outlet of three-way pipe corresponds through sealing connection and solenoid valve B's air inlet and is connected, and solenoid valve B's gas outlet corresponds the intercommunication through the one end of self sealss quick connector and girder.

Preferably, the two ends of the sealing connecting piece are both designed to be quick-plugging connectors, and the two quick-plugging connectors are connected through a PU pipe.

Preferably, the other end of the main beam is provided with a digital display type pressure sensor capable of detecting the pressure value in the main beam.

Preferably, the solenoid valve a and the solenoid valve B are connected with a digital display type pressure sensor, and the digital display type pressure sensor can control the opening of the solenoid valve a and the solenoid valve B.

Preferably, the self-sealing quick connector comprises a plug, a plug bush and a gland, wherein a gas channel is arranged in the center of the plug, the head end of the plug is correspondingly connected with the gas outlet of the electromagnetic valve B, a pressing plate which is correspondingly abutted against the head end surface of the plug bush is arranged on the column body of the plug, the tail end of the plug is correspondingly plugged with the head end of the plug bush, the tail end of the plug bush is installed on the main beam, and the plug bush is correspondingly communicated with the inner space of the main beam; the cover plate of the gland is provided with a through hole correspondingly matched with the plug, the cover plate is correspondingly abutted against the pressing plate, and the inner side surface of the annular plate of the gland is correspondingly in threaded connection with the side surface of the head of the plug bush.

Preferably, the tail end of the plug is provided with a cone, and the inner side surface of the plug bush is provided with a horn shape which is correspondingly matched with the cone.

Preferably, the side of the tail end of the plug is provided with an annular groove, and an annular sealing gasket is arranged in the annular groove.

Preferably, the annular groove and the annular sealing gasket are provided in two.

Due to the adoption of the technical scheme, the utility model has the following beneficial effects:

according to the air tightness detection device for the bridge girder, disclosed by the utility model, the pressure of the test gas input into the girder is controlled through the pressure regulating valve, the pressure gauge can measure the pressure in the test gas conveying process, and then whether the test gas leaks in the conveying process can be judged by comparing the numerical values of the pressure gauge and the pressure regulating valve, so that the accurate result of the air tightness test on the girder is ensured;

in addition, the air tightness detection result of the main beam can be observed in real time through the digital display type pressure sensor, so that the air tightness detection efficiency of the main beam is higher.

Drawings

FIG. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic structural view of a self-sealing quick connector.

In the figure: 1. an air compressor; 2. a pressure regulating valve; 3. a sealing connection; 4. an electromagnetic valve A; 5. a three-way pipe; 6. a pressure gauge; 7. a solenoid valve B; 8. a self-sealing quick connector; 801. a plug; 802. pressing a plate; 803. inserting a sleeve; 804. a gland; 805. an annular seal; 9. a main beam; 10. digital display pressure sensors.

Detailed Description

In the following description, the technical solutions of the present invention will be described with reference to the drawings of the embodiments of the present invention, and it should be understood that, if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "front", "rear", "left", "right", etc., it is only corresponding to the drawings of the present invention, and for convenience of describing the present invention, it is not necessary to indicate or imply that the indicated devices or elements have a specific orientation:

the air tightness detection device for the bridge girder, which is described by combining with the attached drawings 1-2, comprises an air compressor 1, a sealing connector 3, a pressure regulating valve 2, an electromagnetic valve A4, a three-way pipe 5, an electromagnetic valve B7 and a self-sealing quick connector 8, wherein an air source outlet of the air compressor 1 is correspondingly connected with an air inlet of the pressure regulating valve 2 through the sealing connector 3, and the pressure of test gas output from the air compressor 1 can be adjusted through the pressure regulating valve 2, so that detection of girders 9 with different specifications is met;

the air outlet of the pressure regulating valve 2 is correspondingly connected with the air inlet of an electromagnetic valve A4 through a sealing connector 3, the air outlet of an electromagnetic valve A4 is correspondingly connected with the air inlet of a three-way pipe 5 through the sealing connector 3, a pressure gauge 6 is arranged at a first air outlet of the three-way pipe 5, a second air outlet of the three-way pipe 5 is correspondingly connected with the air inlet of an electromagnetic valve B7 through the sealing connector 3, the air outlet of the electromagnetic valve B7 is correspondingly communicated with one end of a main beam 9 through a self-sealing quick connector 8, the pressure of the test gas in the conveying process is measured through the pressure gauge 6, then, by comparing the values of the pressure gauge 6 and the pressure regulating valve 2, whether the test gas leaks in the conveying process can be judged, so that the result of the air tightness test on the main beam 9 is accurate, in addition, when the electromagnetic valve A4 and the electromagnetic valve B7 are both opened, the test gas can enter the main beam 9 and carry out the air tightness test on the main beam 9, if the electromagnetic valve A4 is opened and the electromagnetic valve B7 is disconnected, the electromagnetic valve A4 can be used for detecting the air tightness of the test gas conveying channel, and it is noted that in the detection process, the other end of the main beam is in a blocked and closed state, so that the inner space of the main beam is in a closed state;

according to the requirement, the self-sealing quick connector 8 comprises a plug 801, a plug bush 803 and a gland 804, wherein a gas channel is arranged in the center of the plug 801, the head end of the plug 801 is correspondingly connected with the gas outlet of an electromagnetic valve B7, a pressing plate 802 which is correspondingly abutted against the head end face of the plug bush 803 is arranged on the column body of the plug 801, and is abutted against the plug bush 803 through the pressing plate 802, so that a clip-shaped sealing structure is formed, good sealing performance is achieved between the plug bush 803 and the plug 801, the tail end of the plug 801 is correspondingly inserted into the head end of the plug bush 803, the tail end of the plug bush 803 is arranged on the main beam 9, the plug bush 803 is correspondingly communicated with the inner space of the main beam 9, and gas in the electromagnetic valve B7 sequentially passes through the gas channel in the plug 801 and the plug bush 803 and then enters the main beam 9; the cover plate of the gland 804 is provided with a through hole correspondingly matched with the plug 801, the cover plate is correspondingly abutted against the pressure plate 802, the inner side surface of the annular plate of the gland 804 is correspondingly in threaded connection with the side surface of the head of the plug bush 803, the plug 801 and the plug bush 803 can be in sealed connection through the gland 804, the overall tightness of the self-sealing quick plug 8 is improved, and the accuracy of a measurement result of air tightness detection is ensured; in addition, the tail end of the plug 801 is tapered, the inner side surface of the plug bush 803 is correspondingly matched with a horn shape, and the horn shape has a certain guiding effect on the plug 801, so that the plug 801 and the plug bush 803 can be more easily plugged, and the detection efficiency of the whole air tightness detection is improved; particularly, a ring groove is formed in the side surface of the tail end of the plug 801, and an annular sealing gasket 805 is arranged in the ring groove, so that in the process of inserting the plug 801 into the plug bush 803, the annular sealing gasket 805 deforms accordingly, so as to fill up a gap between the plug 801 and the plug bush 803, and further improve the sealing property between the plug 801 and the plug bush 803; in addition, the number of the ring grooves and the number of the ring-shaped sealing gaskets 805 are two;

according to the requirement, the other end of the main beam 9 is provided with a digital display type pressure sensor 10 capable of detecting the pressure value in the main beam 9, so that the real-time monitoring of the pressure change in the main beam 9 can be completed, and meanwhile, the sensor is arranged, so that the reading of the pressure gauge 6 can be confirmed, and the result precision of the detection device is ensured; in addition, solenoid valve A4 and solenoid valve B7 link to each other with digital display pressure sensor 10, and digital display pressure sensor 10 can control solenoid valve A4 and solenoid valve B7 disconnection, and when the pressure that digital display pressure sensor 10 shows reached preset numerical value, digital display gas pressure sensor 10 feeds back the signal to solenoid valve A4 and solenoid valve B7 simultaneously, and two solenoid valves cut off the power supply immediately after receiving the feedback signal to automatic stop to the interior input compressed air of girder 9, guarantee the safety of pressure testing process girder 9.

When the air tightness detection device for the bridge girder is implemented, firstly, the pressure regulating valve 2 and the electromagnetic valve A4 are opened, test gas output by the air compressor 1 is introduced into the three-way pipe 5, meanwhile, the pressure of the test gas is regulated through the pressure regulating valve 2 until the pressure value displayed by the pressure gauge 6 reaches the required pressure value, then, the electromagnetic valve B7 is opened, the test gas enters the girder 9, and at the moment, whether the air tightness of the girder 9 is qualified or not is judged by observing whether the reading of the pressure gauge 6 is stable or not;

in addition, the pressure of the test gas in the main beam 9 can be directly observed through the digital display type pressure sensor 10, so that the reading of the sensor is compared with the reading of the pressure gauge 6, and finally the conclusion whether the air tightness of the main beam 9 is qualified is obtained; and, digital display pressure sensor 10 can feed back closing signal to solenoid valve A4 and solenoid valve B7 automatically after reaching preset pressure value for a certain time to automatic end gas tightness and detect, guarantee the safety of pressure testing process girder 9.

The utility model is not described in detail in the prior art, and it is apparent to a person skilled in the art that the utility model is not limited to details of the above-described exemplary embodiments, but that the utility model can be embodied in other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

Claims

1. The utility model provides a gas tightness detection device for crane span structure girder, characterized by: comprises an air compressor (1), a pressure regulating valve (2), a sealing connecting piece (3), an electromagnetic valve A (4), a three-way pipe (5), an electromagnetic valve B (7) and a self-sealing quick connector (8), the air source outlet of the air compressor (1) is correspondingly connected with the air inlet of the pressure regulating valve (2) through a sealing connecting piece (3), the air outlet of the pressure regulating valve (2) is correspondingly connected with the air inlet of the electromagnetic valve A (4) through the sealing connecting piece (3), the air outlet of the electromagnetic valve A (4) is correspondingly connected with the air inlet of the three-way pipe (5) through the sealing connecting piece (3), the first air outlet of the three-way pipe (5) is provided with a pressure gauge (6), the second air outlet of the three-way pipe (5) is correspondingly connected with the air inlet of the electromagnetic valve B (7) through the sealing connecting piece (3), and the air outlet of the electromagnetic valve B (7) is correspondingly communicated with one end of the main beam (9) through a self-sealing quick-plugging joint (8);

the self-sealing quick plug connector (8) comprises a plug (801), a plug bush (803) and a gland (804), wherein a gas channel is arranged at the center of the plug (801), the head end of the plug (801) is correspondingly connected with the gas outlet of the electromagnetic valve B (7), a pressing plate (802) which is correspondingly abutted against the head end face of the plug bush (803) is arranged on the column body of the plug (801), the tail end of the plug (801) is correspondingly plugged with the head end of the plug bush (803), the tail end of the plug bush (803) is installed on the main beam (9), and the plug bush (803) is correspondingly communicated with the inner space of the main beam (9); the cover plate of the gland (804) is provided with a through hole correspondingly matched with the plug (801), the cover plate is correspondingly abutted against the pressing plate (802), and the inner side surface of the annular plate of the gland (804) is correspondingly in threaded connection with the side surface of the head of the plug bush (803).

2. The air tightness detecting device for the bridge girder of claim 1, wherein: the two ends of the sealing connecting piece (3) are both designed to be quick-plugging connectors, and the two quick-plugging connectors are connected through a PU pipe.

3. The air tightness detecting device for the bridge girder of claim 1, wherein: the other end of the main beam (9) is provided with a digital display type pressure sensor (10) capable of detecting the pressure value in the main beam (9).

4. The air tightness detecting device for the bridge girder of claim 3, wherein: solenoid valve A (4) and solenoid valve B (7) link to each other with digital display pressure sensor (10), and digital display pressure sensor (10) can control solenoid valve A (4) and solenoid valve B (7) open circuit.

5. The air tightness detecting device for the bridge girder of claim 1, wherein: the tail end of the plug (801) is conical, and the inner side surface of the plug bush (803) is horn-shaped and correspondingly matched.

6. The air tightness detecting device for the bridge girder of claim 1, wherein: the side of the tail end of the plug (801) is provided with a ring groove, and an annular sealing gasket (805) is arranged in the ring groove.

7. The air tightness detecting device for the bridge girder of claim 6, wherein: the annular groove and the annular sealing gasket (805) are arranged in two.