Airtight connection locking device

Abstract

The utility model discloses an airtight connection locking device, which belongs to the technical field of airtight tests and is used for connecting an oil filter of a warmer product, a threaded connection section of an oil pipe joint assembly and an air outlet of an airtight test bed. The airtight connecting and locking device comprises an airtight joint, a stainless steel hose clamp and a connecting hose; the airtight connector is composed of a nut and a pagoda structure, and internal threads of the nut are matched with threads of the threaded connection section of the oil filter and oil pipe connector assembly. One end of the connecting hose is connected with the pagoda structure of the airtight joint, and the other end is connected with an air outlet of the airtight test bed; the pagoda structure of the hose and the airtight joint and the joint of the hose and the air outlet of the airtight test bed are respectively provided with a stainless steel hose clamp. According to the utility model, the oil filter and oil pipe joint assembly can be connected with the airtight test bench, so that the airtightness of a warmer product can be measured.

Description

Technical Field

[0001] The utility model belongs to the technical field of airtightness test, and in particular relates to an airtight connection locking device. Background Art

[0002] The oil filter and oil pipe joint assembly of the heater product (the reason for the air tightness test) needs to undergo a 0.1MPa air tightness test. When conducting the air tightness test, the heater product is placed in a pressure-maintained environment for 3 minutes and immersed in water to observe whether there are bubbles, and to detect whether the sealing performance of the oil filter and oil pipe joint assembly meets the air tightness requirements. Since the connecting end of the oil filter and oil pipe joint assembly is a threaded section, and the length of the threaded section is short, and the thickness of the threaded section and the hose are inconsistent, the direct connection hose is prone to fall off, and the air tightness test bench connection cannot be performed. Therefore, an airtight connection locking device is required to connect the oil filter and oil pipe joint assembly to the test bench for air tightness testing. Utility Model Content

[0003] In view of this, the utility model provides an airtight connection locking device, which can connect the oil filter and oil pipe joint assembly and the airtight test bench, so as to measure the airtightness of the heater product.

[0004] The utility model is realized by the following technical solutions:

[0005] An airtight connection locking device, used to connect the threaded connection section of the oil filter and oil pipe joint assembly of the heater product and the air outlet of the airtight test bench;

[0006] The airtight connection locking device comprises: an airtight joint, a stainless steel hose clamp and a connecting hose;

[0007] The airtight joint is composed of a nut and a pagoda structure, and the internal thread of the nut is matched with the thread of the threaded connection section of the oil filter and the oil pipe joint assembly;

[0008] One end of the connecting hose is connected to the pagoda structure of the airtight joint, and the other end is connected to the air outlet of the airtight test bench; the connection between the hose and the pagoda structure of the airtight joint and the hose and the air outlet of the airtight test bench are both equipped with stainless steel throat clamps.

[0009] Furthermore, a raw tape is wound around the threaded connection section of the oil filter and oil pipe joint assembly.

[0010] Furthermore, the nut of the airtight joint is S22 hexagonal steel, and the thread of the nut is M16×1.5-6H thread.

[0011] Furthermore, the length of the pagoda joint is 25 mm and the hole diameter is 4 mm.

[0012] Furthermore, the length of the connecting hose is 150 mm.

[0013] Beneficial effects:

[0014] (1) The utility model provides an airtight connection locking device, comprising an airtight joint, a stainless steel throat clamp and a connecting hose. By connecting the threaded connection section of the oil filter and the oil pipe joint assembly and the air outlet of the airtight test bench, the airtightness test of the heating product can be carried out; the device is small in size and easy to assemble and disassemble. The oil filter and the oil pipe joint assembly can be well locked by the threaded connection airtight joint, and the hose falling off caused by the threaded connection section being too short or the threaded connection section and the hose being inconsistent in thickness can be avoided, so that the airtightness of the device can be ensured; at the same time, the connection is clamped by the stainless steel throat clamp to prevent the hose from falling off, so that the hose connection is more secure, thereby improving the accuracy of the airtightness test.

[0015] (2) In the utility model, a gas-tight connection locking device is provided, wherein a raw tape is wound around the threaded connection section of the oil filter and the oil pipe joint assembly. By winding the raw tape, the gas-tightness of the device can be further improved, thereby improving the accuracy of the gas-tightness test.

[0016] (3) The utility model provides an airtight connection locking device, wherein the length of the pagoda joint is 25 mm and the outer diameter is 7 mm. The length and outer diameter are suitable for hose connection, and can realize the connection between the threaded connection section of the oil filter and oil pipe joint assembly and the air outlet of the airtight test bench; the length of the pagoda joint is sufficient to be clamped by a throat clamp, which can improve the airtightness of the entire connection locking device, thereby ensuring the test effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 The structure diagram of the airtight joint of the utility model is a schematic diagram (from left to right, the top view and the front view);

[0019] Among them, 1-oil filter and oil pipe joint assembly, 2-airtight joint, 3-stainless steel throat clamp, 4-connecting hose. DETAILED DESCRIPTION

[0020] The present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0021] This embodiment provides an airtight connection locking device for connecting the threaded connection section of the oil filter and oil pipe joint assembly 1 of the heater product and the air outlet of the airtight test bench;

[0022] The airtight connection locking device is as follows Figure 1 As shown, it includes: an airtight joint 2, a stainless steel hose clamp 3 and a connecting hose 4;

[0023] The airtight joint 2, such as Figure 2 As shown, it is a pagoda joint with a nut, which consists of a nut and a pagoda structure; the internal thread of the nut is threadedly matched with the threaded connection section of the oil filter and oil pipe joint assembly 1; in this embodiment, a raw tape is wound around the threaded connection section of the oil filter and oil pipe joint assembly 1, and the raw tape is used to improve the air tightness of the airtight joint 2, thereby improving the accuracy of the airtight test result; in this embodiment, the nut adopts S22 hexagonal steel thread, the thread of the nut is M16×1.5-6H thread, the length of the pagoda joint is 25mm, and the aperture is 4mm;

[0024] One end of the connecting hose 4 is connected to the pagoda structure of the airtight joint 2, and the other end is connected to the air outlet of the airtight test bench; the connection between the hose 4 and the pagoda structure of the airtight joint 2, and the connection between the hose 4 and the air outlet of the airtight test bench are fastened by a stainless steel throat clamp 3, which can prevent the hose from falling off during the airtight test and improve the airtightness of the device; the curvature of the connecting hose 4 is not easy to be too large, and the gas circulation inside the device needs to be ensured; the length of the connecting hose 4 can be selected according to the distance between the oil filter and oil pipe joint assembly 1 and the air outlet of the airtight test bench. In this embodiment, the length of the connecting hose 4 is 150mm.

[0025] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An airtight connection locking device, characterized in that: A threaded connection section for connecting the oil filter and oil pipe joint assembly (1) of the heater product and an air outlet of the airtight test bench; The airtight connection locking device comprises: an airtight joint (2), a stainless steel throat clamp (3) and a connecting hose (4); The airtight joint (2) is composed of a nut and a pagoda structure, and the internal thread of the nut is threadedly matched with the threaded connection section of the oil filter and oil pipe joint assembly (1); One end of the connecting hose (4) is connected to the pagoda structure of the airtight joint (2), and the other end is connected to the air outlet of the airtight test bench; The pagoda structure between the hose (4) and the airtight joint (2), and the connection between the hose (4) and the air outlet of the airtight test bench are all equipped with a stainless steel throat clamp (3).

2. A gas-tight connection locking device as claimed in claim 1, characterized in that: A raw tape is wound around the threaded connection section of the oil filter and oil pipe joint assembly (1).

3. A gas-tight connection locking device as claimed in claim 1, characterized in that: The nut of the airtight joint (2) is made of S22 hexagonal steel, and the thread of the nut is M16×1.5-6H thread.

4. An airtight connection locking device according to any one of claims 1 to 3, characterized in that: The length of the connecting hose (4) is 150 mm.

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