CN207976258U - A kind of device for the test of utensil air-tightness - Google Patents

Abstract

A device for testing the airtight performance of appliances, characterized in that it includes a box body, on the top surface of the box body there are an air source interface, a pressure gauge interface and a detection tubular airtight appliance interface. A vertical wall of the box body is provided with a detection interface for docking with airtight appliances; at least two U-shaped fixing clips are arranged around the outer wall of the testing interface for docking with airtight appliances, and the silicone rubber pad and U-shaped fixing clips are used to The airtight method is sealed on the cover plate at the detection interface of the docking airtight appliance or the variable diameter flange connected to the tested appliance, and a handwheel is set on the U-shaped fixing clip.

Description

A device for testing the airtight performance of appliances

technical field

The utility model relates to an airtight testing device, in particular to a device which can be used to test the airtight performance of various doors, windows, vents and other process holes in grain storage warehouses and supporting appliances.

Background technique

With the rapid development of science and technology and the improvement of people's living standards, the market demand for high-quality grain and oil products has increased. In order to meet the market demand for high-quality grain and oil products, green grain storage technology has emerged. Controlled atmosphere is the use of physical methods to kill insects without using chemicals. It is a world-recognized green grain storage technology, but it requires extremely high air tightness in the application warehouse. All supporting equipment such as doors, windows, vents, and sampling gates used for the detection of gases and pests in grain piles are required to have high airtightness. After installation, the airtightness of the whole warehouse must not be affected. Air tightness testing. However, the current market lacks such a special device for airtight performance testing. The testing methods of various manufacturers are different, and the product quality is different, which seriously affects the airtight performance and use cost of the controlled atmosphere warehouse. Therefore, the grain depot urgently needs to solve the problem of air tightness detection of process holes and supporting equipment.

Contents of the invention

The purpose of this utility model is to provide a special device for detecting the airtight performance of granary process holes and supporting appliances in view of the shortcomings in the above-mentioned prior art.

The purpose of this utility model is achieved by the following technical measures:

The device for testing the airtight performance of appliances of the utility model includes a box body, on the top surface of the box body there are an air source interface, a pressure gauge interface and a detection tubular airtight appliance interface, on a vertical side of the box body A detection interface for docking with an airtight appliance is provided on the wall.

Furthermore, at least two U-shaped fixing clips are arranged around the outer wall of the detection interface for docking airtight appliances, and the cover at the detection interface of the docking airtight appliance is sealed in an airtight manner through the silicone rubber pad 7 and the U-shaped fixing clip 6 plate or a variable diameter flange connected to the tested appliance, and a hand wheel is set on the U-shaped clamp.

The casing described in the utility model is a cuboid structure.

When the utility model is performing positive pressure detection, it presses into the box through the air source interface; when performing negative pressure detection, it draws air from the box through the air source interface. The pressure gauge interface is directly connected with the micromanometer or air tightness detector, and has the functions of positive pressure, negative pressure and timing. The interface 5 for testing tubular airtight appliances is used to detect the airtightness of some tiny airtight appliances.

The beneficial effects of the utility model are as follows:

1. The structure design of the device is reasonable: according to the shape, size and fragility of the object to be tested, different devices can be connected to the air-tight detection device through variable diameter flanges to meet the needs of positive and negative pressure non-destructive testing.

2. The design of the flange connection is simple: when different devices are connected to the airtight device detection interface of the detection device, the U-shaped fixing clip is used to fasten, which greatly simplifies the structure and manufacturing process of the variable diameter flange during connection.

3. Easy to connect and fasten: there is an extra-thick silicon rubber pad 7 at the detection interface of airtight appliances, and the elastic thickness of the rubber pad is much larger than the deformation range of the butt flange when it is fastened. No glue or film sealing is required, and manual rotation is required. The hand wheel on the fixing clip can fasten the flange connection surface, making the airtight operation extremely convenient.

4. A variety of detection states facilitate the docking of appliances: since only the front and top surfaces of the main detection box have interfaces or instruments, and the other four surfaces are all flat, vertical and flat positions can be used for detection, and the air source and Interfaces such as pressure gauges can also be connected to one side through rubber hoses, which is convenient for observation during connection and detection of different appliances and devices.

Description of drawings

Fig. 1 is the structural front view of the present utility model.

FIG. 2 is a side view of FIG. 1 .

Serial numbers in the figure: 1 is the box body, 2 is the detection interface for docking airtight appliances, 3 is the air source interface, 4 is the pressure gauge interface, 5 is the detection tubular airtight appliance interface, 6 is the U-shaped clamp, 7 is Silicon rubber pad, 8 are handwheels, and 9 are cover plates.

Detailed ways

The utility model will be described in further detail below in conjunction with embodiment (accompanying drawing):

As shown in Figures 1 and 2, the device of the utility model for testing the airtight performance of appliances includes a box body 1 with a cuboid structure, and an air source interface 3, a pressure gauge interface 4 and a detection system are arranged on the top surface of the box body. The tubular airtight appliance interface 5 is provided with a detection interface 2 for docking with the airtight appliance on a vertical wall surface of the box.

Furthermore, at least two U-shaped fixing clips 6 are arranged around the outer wall of the detection interface 2 for docking airtight appliances, and are sealed in a sealed manner by the silicon rubber pad 7 and the U-shaped fixing clips 6 on the detection interface 2 for docking airtight appliances. The cover plate 9 at the place or the reducing flange connected with the tested appliance, and the hand wheel 8 is set on the fixing clip 6 .

When using the device of the utility model for airtight detection, the detection instrument is connected in advance, the cover plate 9 of the detection interface of the airtight appliance is opened, and different appliances are connected to the detection interface of the airtight appliance through the variable diameter flange. The interface of the airtight appliance is connected, the pressure-resistant objects are detected by positive pressure, and the vulnerable objects are detected by negative pressure. After making preparations such as airtight treatment of the device, turn on the pressurization or air extraction equipment, and immediately turn off the air source equipment when the pressure is higher than the rated pressure. Half of the time is the pressure half-life of the tested appliance. The whole detection process is simple and fast.

In the construction of the warehouse, it is necessary to conduct an air tightness test on some process holes and supporting equipment that are often opened and closed during production in advance, so as to ensure that these equipment will not form leaking parts when installed on the warehouse. When testing the airtightness of process holes and supporting appliances, first open the cover plate 9 of the testing interface of the airtight appliance, and airtightly connect the process holes such as the vents, doors and windows of the warehouse and the supporting appliances through the connection between the variable diameter flange and the testing device. The appliance detection interface 2 is connected, and the gas detection terminal and sampling strobe of the grain situation detection system are connected with the detection tubular airtight appliance interface 5, and then the pressure equipment is turned on to inflate the airtightness detection device or the vacuum device is turned on from the airtightness detection device Pumping air, after reaching the predetermined pressure index, close the pressing or pumping equipment, the pressure gauge will display the pressure change in the detection device, the timer will record the time when the detection device decays from the rated pressure to half, and check the leakage of the object under inspection with a foaming agent. Finally, use the index of pressure half-life to evaluate the airtightness of the object to be inspected, and complete the task of airtightness testing of appliances.

Claims (2)

1. A device for testing the airtight performance of appliances, characterized in that: it comprises a casing, on the top surface of the casing there is an air source interface, a pressure gauge interface and a detection tubular airtight appliance interface, A vertical wall of the box body is provided with a detection interface for docking airtight appliances; at least two U-shaped fixing clips are arranged around the outer wall of the detection interface for docking airtight appliances, and the silicone rubber pad and the U-shaped The fixing clip is hermetically sealed on the cover plate at the detection interface of the docking airtight appliance or the variable diameter flange connected with the tested appliance, and a hand wheel is arranged on the U-shaped fixing clip. 2 . The device for testing the airtight performance of appliances according to claim 1 , wherein the box is a cuboid structure. 3 .