CN218973717U

CN218973717U - Automatic air pressure abnormality alarm device for compressed air of vibration equipment

Info

Publication number: CN218973717U
Application number: CN202222836939.4U
Authority: CN
Inventors: 何勇; 安海军; 李志鹏
Original assignee: Xian Aeronautics Computing Technique Research Institute of AVIC
Current assignee: Xian Aeronautics Computing Technique Research Institute of AVIC
Priority date: 2022-10-26
Filing date: 2022-10-26
Publication date: 2023-05-05
Anticipated expiration: 2032-10-26

Abstract

The utility model provides an automatic alarm device for abnormal air pressure of compressed air of vibration equipment, which comprises an electric contact pressure gauge, wherein one end of the electric contact pressure gauge is connected with a compressed air pipeline of the vibration equipment, and the other end of the electric contact pressure gauge is electrically connected with an alternating current relay; the alternating current relay is connected with a normal indicator light circuit, an abnormal indicator light circuit and an alarm circuit in parallel, and an alternating current contactor with the output end of the alternating current relay being always open is connected with a 220V alternating current power supply. The automatic air pressure abnormality alarm device can perform air pressure abnormality display and alarm operation, so that abnormal conditions are treated by passive emergency to change into active halt, the operation safety of large-scale vibration equipment is ensured, the potential danger that a test piece is impacted by overstress is avoided, and the cost of maintenance equipment for enterprises is saved.

Description

Automatic air pressure abnormality alarm device for compressed air of vibration equipment

Technical Field

The utility model relates to the technical field of environmental pressure tests, in particular to an automatic air pressure abnormality alarming device for compressed air of vibration equipment.

Background

The vibration equipment is used for screening test on vibration stress of the product, and the performance quality of the vibration equipment can directly influence the performance of the product during delivery and use. In the vibration equipment, one path of compressed air is provided for a vibration isolation air bag of the vibration table so as to prevent vibration force from being directly transmitted to a foundation through a base, ensure the safety of a table body and reduce the influence on the environment; the other path of compressed air is provided for the bearing air bag, the purpose of automatic centering is achieved by adjusting the pressure of the bearing air bag, and the safety of the moving coil during operation is ensured. Therefore, the compressed air of the vibration device is critical to a vibration system in operation, and particularly in the vibration process, whether the compressed air is normal or not can influence the vibration test safety of a tested piece.

At present, in daily work, test detection personnel need to use vibration equipment to check air pressure before the test, and in the use, the air pressure problem, travel fault, excessive conditions of moving coil current and the like all can be reported to the police, but to alarm information, the reason of the fault cannot be prepared and judged, the problem that the test difficulty is increased and the reliability of screening test results is poor because the problem that the air pressure is caused or the test parameters and the like need to be manually checked one by one is caused.

Disclosure of Invention

The utility model aims to design an automatic air pressure abnormality alarm device for compressed air of vibration equipment, which can facilitate on-site test detection personnel to concentrate on test detection and programming, does not need to check air pressure before vibration test each time, and can greatly reduce labor intensity; meanwhile, when the air pressure is abnormal, the alarm can be given in time, so that the alarm is favorable for reminding related personnel of arriving at the scene quickly, removing faults, improving the fault-free time of the equipment and further improving the working efficiency of the vibration equipment.

The technical scheme for realizing the aim of the utility model is as follows: the automatic air pressure abnormality alarming device for the compressed air of the vibration equipment comprises an electric contact pressure gauge, wherein one end of the electric contact pressure gauge is connected with a compressed air pipeline of the vibration equipment, the other end of the electric contact pressure gauge is electrically connected with an alternating current relay, and the electric contact pressure gauge is used for transmitting a detected pressure signal to the alternating current relay;

the alternating current relay is connected with a normal indicator light circuit, an abnormal indicator light circuit and an alarm circuit in parallel, and the output end of the alternating current relay is connected with a 220V alternating current power supply through an alternating current contactor.

Further, the normal indicator light circuit comprises a normal indicator light and a normally closed contact, and the abnormal indicator light circuit comprises a fault indicator light and a normally open contact.

Still further, alternating current relay normal pilot lamp circuit the unusual pilot lamp circuit is all packaged in the block terminal, just normal pilot lamp the trouble pilot lamp is installed and is fixed on the box of block terminal.

Further, the alarm circuit comprises an alarm, a manual alarm removing and resetting switch and a normally open contact.

Further, the alarm is any one of a buzzer alarm and an audible and visual alarm.

In an improved embodiment, the alarm circuit is packaged in the distribution box, and the alarm, the manual alarm removing and resetting switch are all installed and fixed on the box body of the distribution box.

Compared with the prior art, the utility model has the beneficial effects that: the automatic alarm device for air pressure abnormality is powered by 220V AC power supply, is convenient for on-site power-off and wiring operation, and does not need special voltage stabilizing and transforming equipment. When the air pressure of the compressed air of the vibration equipment is monitored, when the air pressure is unstable, abnormal fluctuation or sudden leakage of a pipeline occurs, the pointer of the pressure gauge can immediately trigger the set upper limit value or lower limit value, and the pointer is output to the alternating current relay through a feedback signal to perform abnormal display and alarm operation, so that the abnormal situation is treated and automatically stopped by a passive emergency, the operation safety of the large vibration equipment is ensured, the potential danger that a tested piece is impacted by the overstress is avoided, and the cost of maintenance equipment of enterprises is saved.

Drawings

In order to more clearly illustrate the technical solution of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described. It is apparent that the drawings in the following description are only for the purpose of more clearly illustrating the embodiments of the present utility model or the technical solutions in the prior art, and that other drawings can be obtained according to these drawings without inventive effort for a person of ordinary skill in the art.

FIG. 1 is a schematic connection diagram of an automatic air pressure abnormality warning device for compressed air of a vibration device according to the present utility model;

FIG. 2 is a physical diagram of the automatic air pressure abnormality warning device of the present utility model;

1, compressing an air pipeline by using vibration equipment; 2. an electrical contact pressure gauge; 3. an alternating current relay; 4. a fault indicator light; 5. a normal indicator light; 6. an alarm; 7. a manual alarm and reset switch; 8. an alternating current contactor; 9. a wire; 10. an electrical distribution box.

Detailed Description

The utility model will be further described with reference to specific embodiments, and advantages and features of the utility model will become apparent from the description. These examples are merely exemplary and do not limit the scope of the utility model in any way. It will be understood by those skilled in the art that various changes and substitutions of details and forms of the technical solution of the present utility model may be made without departing from the spirit and scope of the present utility model, but these changes and substitutions fall within the scope of the present utility model.

In the description of the present embodiment, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

The embodiment provides an abnormal air pressure automatic alarm device of compressed air of vibration equipment, which is shown in fig. 1, and comprises an electric contact pressure gauge 2, wherein one end of the electric contact pressure gauge 2 is connected with a compressed air pipeline 1 of the vibration equipment, the other end of the electric contact pressure gauge is electrically connected with an alternating current relay 3, and when the automatic air pressure alarm device is used, the electric contact pressure gauge 2 detects the pressure value of the compressed air in the compressed air pipeline 1 of the vibration equipment in real time and transmits a detected pressure signal to the alternating current relay 3.

Referring to fig. 1, the ac relay 3 is connected in parallel with a normal indicator light circuit, an abnormal indicator light circuit, and an alarm circuit. Specifically, when the pressure of compressed air in the compressed air pipeline 1 of the vibration equipment is in a normal range, the normal indicator light circuit works; when the pressure is abnormal, the abnormal indicator lamp circuit and the alarm circuit work simultaneously to warn related personnel, so that the related personnel can carry out emergency operation.

Referring to fig. 1, the output end of the ac relay 3 is connected to a 220V ac power supply through an ac contactor 8, and specifically, the 220V ac power supply provides electric energy for an electromagnetic coil inside the ac relay 3 through the ac contactor 8, so as to ensure the normal operation of the ac relay 3.

In one embodiment, referring to fig. 1, the normal indicator light circuit includes a normal indicator light 5, a normally closed contact (not shown in the drawings); the abnormality indicator lamp circuit includes a fault indicator lamp 4 and a normally open contact (not shown in the drawings). Specifically, when the pressure is in the normal range, the normal indicator light circuit is communicated to work, meanwhile, the abnormal indicator light circuit is disconnected, at the moment, the normal indicator light 5 emits green light to display that the pressure is normal, and the fault indicator light 4 is not on; when the pressure is abnormal, the normally closed contact opening circuit in the normal indicator lamp circuit is disconnected, the normal indicator lamp 5 is not lightened, and meanwhile, the normally open contact in the abnormal indicator lamp circuit acts to enable the circuit to be communicated, and the fault indicator lamp 4 is lightened to emit red light for warning.

In an improved embodiment, in order to avoid potential safety hazards, the function of protecting safety of operators and devices is achieved, as shown in fig. 2, the ac relay 3, the normal indicator light circuit and the abnormal indicator light circuit are all encapsulated in the distribution box 10, and the normal indicator light 5 and the fault indicator light 4 are installed and fixed on the box body of the distribution box 10.

In one embodiment, referring to fig. 1, the alarm circuit includes an alarm 6, a manual alarm-off and reset switch 7, and a normally open contact (not shown). Specifically, when the pressure is in the normal range, the alarm circuit is open; when the pressure is abnormal, the normally closed contact acts to enable the circuit to be communicated, and at the moment, the alarm 6 alarms. When the related personnel receive the alarm signal, the position of the automatic alarm device with abnormal air pressure is reached, the manual alarm removing and resetting switch 7 is opened to disconnect the alarm circuit, so as to remove the alarm and return the normally closed contact to the initial state.

In a preferred embodiment, the alarm 6 is any one of a buzzer alarm and an audible and visual alarm.

In another improved embodiment, in order to avoid potential safety hazards and protect safety of operators and devices, referring to fig. 2, the alarm circuit is encapsulated in the distribution box 10, and the alarm 6 and the manual alarm-removing and reset switch 7 are all installed and fixed on the box body of the distribution box 10.

The following describes the air pressure abnormality automatic alarm device of the present embodiment through pressure monitoring and warning of the compressed air of the vibration equipment:

firstly, referring to fig. 1 and 2, an electric contact pressure gauge 2 of the automatic air pressure abnormality alarming device is mounted on a compressed air pipeline 1 of a vibration device in a threaded connection mode, and the pressure in the compressed air pipeline 1 of the vibration device is monitored in real time.

Secondly, according to the pressure requirement of 0.6Mpa of compressed gas in the vibration air bag in the vibration table, the upper limit of the electric contact pressure gauge 2 is set to be 0.9Mpa, and the lower limit is set to be 0.3Mpa.

Then, when the vibration table works, the electric contact pressure gauge 2 converts the detected pressure value into a voltage signal or a current signal and transmits the voltage signal or the current signal to the alternating current relay 3;

when the pressure is in the normal range, the normal indicator lamp circuit works, and the normal indicator lamp 5 works to emit green light; meanwhile, the abnormality indicator lamp circuit does not work, the fault indicator lamp 4 does not work, and the alarm 6 does not work;

when the pressure exceeds the upper limit or is lower than the lower limit, the normally closed contact of the normal indicator lamp circuit is opened, the normal indicator lamp circuit is disconnected, and the normal indicator lamp 5 is extinguished; meanwhile, a normally open contact of the abnormal indicator lamp circuit is opened, the abnormal indicator lamp circuit is communicated, and the fault indicator lamp 4 is lightened to display red for warning; the normally open contact of the alarm circuit is closed, the alarm circuit is communicated, and the alarm 6 works to warn the sound alarm or the sound and light alarm.

Finally, because the pressure decay of the vibrating table air bag has delay, the vibrating table and a tested piece cannot be damaged when abnormality occurs, when related personnel receive an alarm signal, the vibrating table is actively shut down by manual operation, potential damage can be prevented, and meanwhile, the related personnel operate the manual alarm-removing and resetting switch 7 to disconnect an alarm circuit and stop alarming.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. An automatic air pressure abnormality alarm device for compressed air of vibration equipment is characterized in that: the vibration device comprises an electric contact pressure gauge (2), wherein one end of the electric contact pressure gauge (2) is connected with a compressed air pipeline (1) of the vibration device, and the other end of the electric contact pressure gauge is electrically connected with an alternating current relay (3);

the alternating current relay (3) is connected with a normal indicator lamp circuit, an abnormal indicator lamp circuit and an alarm circuit in parallel, and the alternating current relay (3) is connected with a 220V alternating current power supply through an alternating current contactor (8).

2. The automatic air pressure abnormality alarm device according to claim 1, characterized in that: the normal indicator lamp circuit comprises a normal indicator lamp (5) and a normally closed contact, and the abnormal indicator lamp circuit comprises a fault indicator lamp (4) and a normally open contact.

3. The automatic air pressure abnormality alarm device according to claim 2, characterized in that: the alternating current relay (3) normal pilot lamp circuit is all packaged in block terminal (10), just normal pilot lamp (5) fault indication lamp (4) are installed and are fixed on the box of block terminal (10).

4. The automatic air pressure abnormality alarm device according to any one of claims 1 to 3, characterized in that: the alarm circuit comprises an alarm (6), a manual alarm-removing and resetting switch (7) and a normally open contact.

5. The automatic air pressure abnormality alarm device according to claim 4, characterized in that: the alarm (6) is any one of a buzzer alarm and an audible and visual alarm.

6. The automatic air pressure abnormality alarm device according to claim 4, characterized in that: the alarm circuit is packaged in the distribution box (10), and the alarm (6) and the manual alarm removing and resetting switch (7) are all installed and fixed on the box body of the distribution box (10).