Air tightness testing device at pipeline joint

Abstract

The utility model relates to an air tightness testing device for a pipeline joint. A test unit; and the pressurization and decompression assembly is arranged in the handle and is used for pressurizing or decompressing the pneumatic expansion sealing strip and the test cavity. According to the air tightness testing device for the pipeline joint, the testing part is arranged on the handle, the pressure increasing and relieving assembly is arranged in the handle, the portable detection effect is achieved, pneumatic expansion sealing strips are arranged at the two ends of the lower clamping part and the two ends of the upper clamping part, and an annular closed testing cavity can be formed when the lower clamping part and the upper clamping part are closed; the connector of the hookah smoke outlet and the hose is directly locked, so that the air tightness test is facilitated, the use is convenient and simple, in addition, the two-way pressure regulating valve and the integrated pressure relief electromagnetic valve realize time-sharing independent control of sealing and detection, the structure is further simplified, and the detection efficiency is remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of airtightness testing technology, specifically to an airtightness testing device for pipe joints. Background Technology

[0002] In recent years, with the popularization of hookah culture and the continuous improvement of consumers' requirements for the smoking experience, hookahs, as a unique smoking tool, have received increasing attention for their product design and quality control. In hookah design, the airtightness of the outlet and hose connection is crucial to ensuring smooth smoke output and maintaining smoking pressure. Any minute leakage can lead to reduced smoke concentration, uneven draw resistance, or even a decline in overall performance, directly impacting user experience and product reputation.

[0003] Currently, common methods for testing the airtightness of hookahs on the market mainly include manual testing, laboratory static pressure testing, and some online monitoring technologies. These methods have several major drawbacks: existing testing equipment is generally large and complex in structure, and most require fixed locations or laboratory environments for testing, making it difficult to meet the needs of rapid on-site testing; traditional testing methods often require a long time to establish a stable testing environment, and the testing process is relatively cumbersome, which is not conducive to achieving efficient and large-scale product quality control; some testing methods require operators to have high professional skills and rich testing experience, with many operating steps, which are prone to data errors or inaccurate judgments due to human factors, and the usage threshold is high for non-professional users. Therefore, an airtightness testing device for pipe joints is proposed to solve the above problems. Utility Model Content

[0004] This utility model provides a pipe joint airtightness testing device. Through a non-invasive adapter design and integrated pneumatic and electric handle, it achieves a portable, fast, and easy-to-operate airtightness testing device, enabling efficient detection of the airtightness of key connection parts of hookahs, and providing a practical and reliable technical means for the production and maintenance of hookahs.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: a handle;

[0006] The testing unit includes a lower clamping part located at the top of the handle, and an upper clamping part hinged above the lower clamping part. When the lower clamping part and the upper clamping part are combined, the pipe connector can be wrapped between the two. Both ends of the lower clamping part and the upper clamping part are provided with pneumatic expansion sealing strips. The pneumatic expansion sealing strips are arranged in a ring on the inner wall surface of the lower clamping part and the upper clamping part, and the joints of the two ends of the pneumatic expansion sealing strips are located at the opening and closing points of the lower clamping part and the upper clamping part. A testing chamber for testing is formed between the two pneumatic expansion sealing strips. A pressure sensor is provided on the inner wall surface of the testing chamber. Corresponding spring buckles and latches are also provided on the outer side of the opening and closing points of the lower clamping part and the upper clamping part.

[0007] A pressure relief assembly, located in the handle, is used to pressurize or depressurize the pneumatic expansion seal and test chamber.

[0008] Based on the above technical solution, the present invention can be further improved as follows.

[0009] Furthermore, a matching stepped groove is provided at the joint of the end of the pneumatic expansion sealing strip.

[0010] Furthermore, the inner wall surfaces of the lower clamping part and the upper clamping part are provided with expansion guide grooves corresponding to the two pneumatic expansion sealing strips, and the two pneumatic expansion sealing strips are respectively built into the corresponding expansion guide grooves.

[0011] Furthermore, the opening and closing joint between the lower clamping part and the upper clamping part is provided with a docking step, and a sealing strip is provided on the docking step.

[0012] Furthermore, the bottom of the pneumatic expansion sealing strip is provided with an air tube extending into the handle, and the bottom of the test chamber is provided with a connecting tube extending into the handle.

[0013] Furthermore, the pressure relief assembly includes a battery and an air pump, and the output end of the air pump is connected to a sealing strip air path and a detection air path respectively through a dual-path pressure regulating valve.

[0014] Furthermore, the sealing strip air circuit includes a sealing strip pipeline solenoid valve connected to one of the dual-path pressure regulating valves, and the output end of the sealing strip pipeline solenoid valve is connected to the air pipes of the two pneumatic expansion sealing strips respectively through a three-way pipe.

[0015] Furthermore, the detection gas path includes a detection solenoid valve connected to the other path of the dual-path pressure regulating valve, and the output end of the detection solenoid valve is connected to the connecting pipe of the test chamber.

[0016] Furthermore, both the sealing strip pipeline solenoid valve and the detection solenoid valve are solenoid valves with integrated pressure relief and pressure holding functions. The pressure relief end of the solenoid valve and the air inlet end of the air pump are both connected to the bottom of the handle through pipelines, and a silencer is provided on the pressure relief end of the solenoid valve.

[0017] Furthermore, the handle is provided with heat dissipation grooves on its exterior;

[0018] A pressure sensor is installed in the pneumatic expansion sealing strip;

[0019] The bottom of the handle also has a charging port that is electrically connected to the battery;

[0020] The controller also includes a wireless transmission module.

[0021] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0022] 1. This pipe joint airtightness testing device achieves portable testing by placing the testing part on the handle and the pressure relief component inside the handle. By setting pneumatic expansion sealing strips at both ends of the lower and upper clamping parts, an annular sealed testing chamber can be formed when the lower and upper clamping parts are closed, directly locking the joint between the hookah spout and the hose, thus facilitating airtightness testing. It is convenient and simple to use. In addition, the dual-way pressure regulating valve and the integrated pressure relief solenoid valve enable time-sharing independent control of sealing and testing, further simplifying the structure and significantly improving testing efficiency.

[0023] 2. The airtightness testing device at the pipe joint, through the stepped groove interlocking structure of the pneumatic expansion sealing strip, and the stepped interlocking structure of the lower clamping part and the upper clamping part, combined with the design of spring buckle and latch, can effectively ensure the sealing of the opening and closing. Attached Figure Description

[0024] Figure 1 A schematic diagram of a pipe joint airtightness testing device provided for an embodiment of this utility model;

[0025] Figure 2 This is a schematic diagram of the test section in the open state according to an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the pneumatic expansion sealing strip according to an embodiment of the present invention;

[0027] Figure 4 This is a cross-sectional schematic diagram of the airtightness testing device in an embodiment of this utility model;

[0028] Handle 1; Test section 2; Lower clamping section 201; Upper clamping section 202; Pneumatic expansion sealing strip 203; Stepped groove 2031; Air pipe 2032; Expansion guide groove 204; Spring buckle and latch 205; Pressure sensor 206; Pressure relief assembly 3; Battery 301; Air pump 302; Dual-way pressure regulating valve 303; Detection solenoid valve 304; Sealing strip pipeline solenoid valve 305; T-pipe 306; Charging port 307. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0030] like Figure 1-4 As shown in the figure, this embodiment is a pipe joint airtightness testing device, comprising a handle 1, a testing part 2, and a pressure relief assembly 3. The handle 1 is convenient for the experimenter to hold the device and perform corresponding operations, and the inside of the handle 1 is a hollow structure.

[0031] The testing unit 2 includes a lower clamping part 201 disposed on the top of the handle 1, and an upper clamping part 202 hinged above the lower clamping part 201. This hinged arrangement allows the lower clamping part 201 and the upper clamping part 202 to open and close, facilitating the wrapping of the connector from the side without repeated disassembly and reassembly of the pipeline. When the lower clamping part 201 and the upper clamping part 202 are closed, the pipeline connector can be wrapped between them. Both ends of the lower clamping part 201 and the upper clamping part 202 are provided with pneumatic expansion sealing strips 203. In this embodiment, the pneumatic expansion sealing strips 203 are made of silicone and are arranged in a ring around the lower clamping part 201 and the upper clamping part 202. On the inner wall surface of 02, the joints of the two ends of the pneumatic expansion sealing strip 203 are located at the opening and closing points of the lower clamping part 201 and the upper clamping part 202, so as not to affect the normal opening and closing of the lower clamping part 201 and the upper clamping part 202. When the two pneumatic expansion sealing strips 203 are pressurized and expanded, a test cavity for testing can be formed between them by squeezing and fitting with the joint. A pressure sensor 206 is provided on the inner wall surface of the test cavity to monitor the pressure change value. Corresponding spring buckles and latches 205 are also provided on the outer side of the opening and closing points of the lower clamping part 201 and the upper clamping part 202. When the spring buckles and latches 205 are closed, they can provide locking force to ensure clamping stability.

[0032] With this design, the lower clamping part 201 and the upper clamping part 202 can be locked by the connection of the spring buckle and the buckle 205, and the pipe joint can be wrapped in it. Then, the expansion of the two pneumatic expansion sealing strips 203 forms a test chamber for testing between them. Then, by pressurizing the test chamber and using the pressure sensor 206 to monitor the pressure change, the detection effect can be achieved.

[0033] The pressure relief component 3 is installed in the handle 1 and is used to pressurize or depressurize the pneumatic expansion sealing strip 203 and the test chamber, so as to realize the time-sharing control of sealing and detection, thus forming a portable detection device.

[0034] Furthermore, a matching stepped groove 2031 is provided at the joint of the end of the pneumatic expansion sealing strip 203, thereby improving the sealing performance of the end connection.

[0035] Furthermore, the inner wall surfaces of the lower clamping part 201 and the upper clamping part 202 are provided with expansion guide grooves 204 corresponding to the two pneumatic expansion sealing strips 203, and the two pneumatic expansion sealing strips 203 are respectively built into the corresponding expansion guide grooves 204.

[0036] This design limits the radial expansion of the sealing strip, thereby improving its sealing strength.

[0037] In a preferred embodiment, the opening and closing point of the lower clamping part 201 and the upper clamping part 202 is provided with a mating step, and a sealing strip is provided on the mating step to further improve its sealing performance.

[0038] Furthermore, the bottom of the pneumatic expansion sealing strip 203 is provided with an air tube 2032 extending into the handle 1, and the bottom of the test chamber is provided with a connecting tube extending into the handle 1, which facilitates connection with the pressure relief assembly 3.

[0039] Furthermore, the pressure relief assembly 3 includes a battery 301 and an air pump 302. The output end of the air pump 302 is connected to the sealing strip air path and the detection air path respectively through a dual-path pressure regulating valve 303. The dual-path pressure regulating valve 303 divides the air pump output into two paths, so that the air path of the sealing strip and the detection air path can be pressurized by one air pump 302.

[0040] In this embodiment, the sealing strip air path includes a sealing strip pipeline solenoid valve 305 connected to one of the dual-path pressure regulating valves 303. The output end of the sealing strip pipeline solenoid valve 305 is connected to the air pipes 2032 of the two pneumatic expansion sealing strips 203 through a three-way pipe 306, thereby enabling simultaneous pressurization of the two pneumatic expansion sealing strips 203.

[0041] In addition, the detection gas path includes a detection solenoid valve 304 connected to the other path of the dual-path pressure regulating valve 303. The output end of the detection solenoid valve 304 is connected to the connecting pipe of the test chamber, thereby realizing the pressurization of the test chamber.

[0042] Both the sealing strip pipeline solenoid valve 305 and the detection solenoid valve 304 are solenoid valves with integrated pressure relief and pressure holding functions. The pressure relief end of the solenoid valve and the air inlet end of the air pump 302 are connected to the bottom of the handle 1 through pipelines. A silencer is provided on the pressure relief end of the solenoid valve, so that the pressure holding and pressure relief functions can be realized through the solenoid valve without the need to install a separate pressure relief valve.

[0043] Furthermore, the handle 1 is provided with a heat dissipation groove 101 on its exterior to facilitate heat dissipation during the operation of the electrical equipment.

[0044] A pressure sensor is installed in the pneumatic expansion sealing strip 203 to facilitate the measurement of the pressure of the pneumatic expansion sealing strip 203.

[0045] The bottom of the handle 1 is also provided with a charging port 307 that is electrically connected to the battery 301.

[0046] The handle 1 is also equipped with a wireless transmission module, which facilitates the uploading of test data to external devices.

[0047] It should be noted that battery 301 is electrically connected to other electrical devices for power supply, and handle 1 is also equipped with a main control chip for implementing control logic.

[0048] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A device for testing the airtightness of pipe joints, characterized in that, include: Handle (1); The test unit (2) includes a lower clamping part (201) provided on the top of the handle (1). An upper clamping part (202) is hinged above the lower clamping part (201). When the lower clamping part (201) and the upper clamping part (202) are combined, the pipe joint can be wrapped between the two. Both ends of the lower clamping part (201) and the upper clamping part (202) are provided with pneumatic expansion sealing strips (203). The pneumatic expansion sealing strips (203) are arranged in a ring around the lower clamping part (201). 1) The inner wall surface of the upper clamping part (202) and the docking point of the two ends of the pneumatic expansion sealing strip (203) are located at the opening and closing point of the lower clamping part (201) and the upper clamping part (202). A test cavity for testing is formed between the two pneumatic expansion sealing strips (203). A pressure sensor (206) is provided on the inner wall surface of the test cavity. A corresponding spring buckle and buckle (205) are also provided on the outer side of the opening and closing point of the lower clamping part (201) and the upper clamping part (202). The pressure relief assembly (3) is located in the handle (1) and is used to pressurize or depressurize the pneumatic expansion seal (203) and the test chamber.

2. The airtightness testing device for pipe joints according to claim 1, characterized in that: The end of the pneumatic expansion sealing strip (203) is provided with a matching stepped groove (2031).

3. The airtightness testing device for pipe joints according to claim 2, characterized in that: The inner walls of the lower clamping part (201) and the upper clamping part (202) are provided with expansion guide grooves (204) corresponding to the two pneumatic expansion sealing strips (203), and the two pneumatic expansion sealing strips (203) are respectively built into the corresponding expansion guide grooves (204).

4. The airtightness testing device for pipe joints according to claim 3, characterized in that: The lower clamping part (201) and the upper clamping part (202) are provided with a docking step at the opening and closing point, and a sealing strip is provided on the docking step.

5. A pipe joint airtightness testing device according to any one of claims 1-4, characterized in that: The bottom of the pneumatic expansion sealing strip (203) is provided with an air tube (2032) extending into the handle (1), and the bottom of the test chamber is provided with a connecting tube extending into the handle (1).

6. The airtightness testing device for pipe joints according to claim 5, characterized in that: The pressure relief assembly (3) includes a battery (301) and an air pump (302). The output end of the air pump (302) is connected to the air path with the sealing strip and the detection air path through a dual-path pressure regulating valve (303).

7. The airtightness testing device for pipe joints according to claim 6, characterized in that: The sealing strip air circuit includes a sealing strip pipeline solenoid valve (305) connected to one of the dual-path pressure regulating valves (303). The output end of the sealing strip pipeline solenoid valve (305) is connected to the air pipes (2032) of the two pneumatic expansion sealing strips (203) through a three-way pipe (306).

8. The airtightness testing device for pipe joints according to claim 7, characterized in that: The detection gas path includes a detection solenoid valve (304) connected to the other path of the dual-path pressure regulating valve (303), and the output end of the detection solenoid valve (304) is connected to the connecting pipe of the test chamber.

9. The airtightness testing device for pipe joints according to claim 7, characterized in that: The sealing strip pipeline solenoid valve (305) and the detection solenoid valve (304) are both solenoid valves with integrated pressure relief and pressure holding functions. The pressure relief end of the solenoid valve and the air inlet end of the air pump (302) are both connected to the bottom of the handle (1) through pipelines, and a silencer is provided on the pressure relief end of the solenoid valve.

10. The airtightness testing device for pipe joints according to claim 9, characterized in that: The handle (1) is provided with a heat dissipation groove (101) on the outside. A pressure sensor is installed in the pneumatic expansion sealing strip (203); The bottom of the handle (1) is also provided with a charging port (307) that is electrically connected to the battery (301). The handle (1) is also equipped with a wireless transmission module.

Images