Thermal insulation pipe air tightness detection device

Abstract

The utility model relates to the technical field of thermal insulation pipes, in particular to a thermal insulation pipe airtightness detection device which comprises a gas transmission assembly, a liquid soap transmission assembly is detachably connected in the gas transmission assembly, a gas compression assembly is arranged in the liquid soap transmission assembly, the gas transmission assembly comprises a threaded column, and an annular groove end cap is fixedly connected to the top of the threaded column. The center of the interior of the annular groove end cap is fixedly connected with a screw protruding upwards, a gas inlet pipeline communicated with the outside is arranged in the threaded column, the liquid soap conveying assembly comprises a liquid soap box, a liquid storage cavity, a gas storage cavity and a gas compression cavity which are independent of one another are formed in the liquid soap box, and a threaded hole is formed in the center of the bottom of the liquid soap box and is in threaded connection with the screw; the threaded column is inserted into the heat preservation pipe connector, compressed air is input through the air conveying assembly, then soap liquid spraying can be conducted on a welding seam at any position through the air compression assembly and the soap liquid conveying assembly, use and carrying are convenient, and meanwhile use flexibility and detection accuracy are improved.

Description

Technical Field

[0001] The utility model relates to an air tightness inspection device, in particular to an air tightness test device for a prefabricated directly buried thermal insulation pipe. Background Art

[0002] As the use scope and demand of prefabricated insulated pipes increase, the quality requirements of prefabricated insulated pipes increase accordingly. In view of the air tightness test requirements in the patching construction of prefabricated insulated pipes, it is necessary to weld a branch pipe after the patching jacket is welded and install a gas nozzle for ventilation and pressure testing. After the test is completed, the branch pipe must be cut and polished flat, which is a troublesome and time-consuming step. Therefore, it is necessary to develop an air tightness test device that is simple and easy to disassemble and assemble.

[0003] The prior art discloses a direct-buried polyurethane insulation pipe air tightness test device (publication number: CN211145790U), which includes a main body, a handle on the main body, a pressure gauge on the upper end of the main body, the pressure gauge is connected to the main body through a quick air pipe connector, and a vent hole for connecting the pressure gauge and the quick air pipe connector is provided in the main body. When in use, the device is vertically inserted into the injection hole, and after the position is corrected, the handle is pulled by both hands, and rotated downward clockwise until the inner mouth of the injection hole is twisted out of the thread, and the test device is continued to be rotated downward until the chip groove is completely immersed in the hole, and the air pressure of the compressed air pipe is adjusted to 0.02Ma test pressure, and the female port of the quick air pipe connector is inserted into the socket on the device, and the air source of the compressed air pipe is connected, and then soapy water is brushed on the welding position of the outer protective pipe of the patch with a brush, and it can be determined that the patch welding is qualified by checking that there is no leakage. Although the device is simple and easy to disassemble and assemble, the last step of brushing soapy water needs to be done manually, and the quality of the soapy water and the standardization of the on-site operation will directly affect the air tightness result. Utility Model Content

[0004] The utility model aims to provide a device for detecting the air tightness of a thermal insulation pipe, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A thermal insulation pipe air tightness detection device, the thermal insulation pipe air tightness detection device comprises a gas delivery component, a soap liquid delivery component is detachably connected to the gas delivery component, and a gas compression component is arranged in the soap liquid delivery component;

[0007] The gas delivery assembly comprises a threaded column, a ring groove end cap is fixedly connected to the top of the threaded column, a screw rod protruding upward is fixedly connected to the center of the ring groove end cap, and an air intake pipe communicating with the outside is arranged inside the threaded column;

[0008] The liquid soap delivery component includes a liquid soap box, in which there are independent liquid storage cavity, gas storage cavity and gas compression cavity. A threaded hole is opened at the center of the bottom of the liquid soap box, and the threaded hole is threadedly connected with a screw rod.

[0009] Preferably, a movable plug cylinder is arranged in the gas compression cavity. A plug rod is fixedly connected to the top of the plug cylinder. An air vent is opened at the top of the plug cylinder, and the air vent is communicated with the gas compression cavity. A leather cup is fixedly connected to the bottom of the plug cylinder, and the outer wall of the leather cup is slidably connected with the inner wall of the gas compression cavity.

[0010] Preferably, a one-way intake valve is arranged between the bottom of the gas compression cavity and the gas storage cavity, and a one-way outlet valve is arranged on one side close to the liquid storage cavity at the top of the gas storage cavity.

[0011] Preferably, a liquid outlet pipe is arranged in the liquid storage cavity. A manual switch is arranged at the part of the liquid outlet pipe located outside the liquid storage cavity. A hose is communicated with the outside of the liquid outlet pipe, and a spray head is arranged at the end of the hose.

[0012] Preferably, the height of the screw rod is the same as the length of the threaded hole at the bottom of the liquid soap box.

[0013] Preferably, a liquid injection port is opened at the top of the liquid soap box.

[0014] Preferably, the outer wall of the threaded column is provided with threads. One end of the intake pipeline is communicated with the side wall of the threaded column, and the other end is communicated with the bottom end of the threaded column. A pressure gauge and a valve are installed on the intake pipeline on the side wall of the threaded column.

[0015] Preferably, handles are fixedly installed on both sides of the outer wall of the ring groove end cap.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] 1. When using this airtightness detection device for the insulation pipe, insert the threaded column into the injection port of the insulation pipe. After the compressed air is introduced and the air pressure is stable, the gas compression component can be used to pressurize the liquid soap in the liquid storage cavity, so that the liquid soap is sprayed on the welding part at the end of the insulation pipe through the spray head, which is convenient for use. If the liquid soap is insufficient, it can be added at any time from the liquid injection port.

[0018] 2. When the distance is relatively long, the liquid soap box can be rotated out of the ring groove end cap. By using the hose and the spray head, the liquid soap can be sprayed at any position, ensuring the flexibility of use and the accuracy of detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the overall structural schematic diagram of the present utility model;

[0020] Figure 2 is the overall sectional structural schematic diagram of the present utility model;

[0021] Figure 3 Schematic diagram of the overall structure of the end box of the present utility model;

[0022] Figure 4 For the present utility model Figure 3 Partial enlarged schematic diagram at position A in the present utility model.

[0023] In the figure: 1. Gas transmission component; 101. Ring groove end cap; 102. Screw; 103. Intake pipeline; 104. Valve; 105. Pressure gauge; 106. Handle; 107. Threaded post; 2. Soap liquid delivery component; 201. Hose; 202. Liquid injection port; 203. Manual switch; 204. Sprayer; 205. Liquid outlet pipe; 206. Soap liquid box; 3. Gas compression component; 301. Plug cylinder; 302. Plug rod; 303. Leather cup; 304. One-way air outlet valve; 305. One-way air inlet valve; 306. Ventilation hole; 307. Air storage cavity; 308. Liquid storage cavity; 309. Gas compression cavity. Specific embodiments

[0024] In order to make the technical means, creative features, achieved purposes and effects of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] As Figures 1-4 shown, a heat preservation pipe airtightness detection device includes a gas transmission component 1, a soap liquid delivery component 2 detachably connected inside the gas transmission component 1, and a gas compression component 3 arranged inside the soap liquid delivery component 2;

[0026] The gas transmission component 1 includes a threaded post 107, a ring groove end cap 101 fixedly connected to the top of the threaded post 107, a screw 102 fixedly connected to the center of the inside of the ring groove end cap 101 and protruding upward, and an intake pipeline 103 communicating with the outside is arranged inside the threaded post 107;

[0027] The soap liquid delivery component 2 includes a soap liquid box 206, an independent liquid storage cavity 308, an air storage cavity 307 and a gas compression cavity 309 are arranged inside the soap liquid box 206, a threaded hole is opened at the center of the bottom of the soap liquid box 206, and the threaded hole is threadedly connected with the screw 102;

[0028] During use, screw the gas delivery component 1 into the joint between the two insulating pipes through the threaded post 107. The threaded design of the threaded post 107 facilitates operation. After installing it in place, thread the soap liquid delivery component 2 through the threaded hole at its bottom to the screw 102 inside the annular groove end cap 101. The prepared soap liquid needs to be loaded into the liquid storage cavity 308 in advance. Then, open the air inlet pipe 103 to deliver gas to the connection of the insulating pipes. After the air pressure is stable, compress the external air through the gas compression cavity 309 and store it in the gas storage cavity 307. The compressed air enters the liquid storage cavity 308 through the gas storage cavity 307. The pressure in the liquid storage cavity 308 increases, causing the soap liquid inside to be discharged outward, facilitating the subsequent airtightness detection of the connection of the insulating pipes. If bubbles appear at the place where the soap liquid is applied, the airtightness is poor.

[0029] A movable plug cylinder 301 is arranged in the gas compression cavity 309. A plug rod 302 is fixedly connected to the top of the plug cylinder 301. A ventilation hole 306 is opened at the top of the plug cylinder 301, and the ventilation hole 306 communicates with the gas compression cavity 309. A leather cup 303 is fixedly connected to the bottom of the plug cylinder 301, and the outer wall of the leather cup 303 is slidably connected to the inner wall of the gas compression cavity 309. A one-way intake valve 305 is arranged between the bottom of the gas compression cavity 309 and the gas storage cavity 307. A one-way exhaust valve 304 is arranged on the top of the gas storage cavity 307 near one side of the liquid storage cavity 308.

[0030] When the gas compression component 3 is specifically used, when pulling up the plug cylinder 301, the leather cup 303 slides upward along the gas compression cavity 309. Since the leather cup 303 is made of flexible material, there will be a certain gap between it and the inner wall of the gas compression cavity 309 during the rising process. At this time, the external air enters the gas compression cavity 309 below the leather cup 303 through the ventilation hole 306. When moving the leather cup 303 downward, the pressure in the gas compression cavity 309 increases accordingly, and the leather cup 303 will fully expand and contact the inner wall of the gas compression cavity 309. The compressed air enters the gas storage cavity 307 through the one-way intake valve 305 and then enters the liquid storage cavity 308 through the one-way exhaust valve 304.

[0031] A liquid outlet pipe 205 is arranged in the liquid storage cavity 308. A manual switch 203 is arranged at the place where the liquid outlet pipe 205 is located outside the liquid storage cavity 308. A hose 201 is externally connected to the liquid outlet pipe 205. A nozzle 204 is arranged at the end of the hose 201. A liquid injection port 202 is opened at the top of the soap liquid box 206;

[0032] During use, first close the manual switch 203, add the prepared soap solution into the soap solution box 206 through the liquid injection port 202, pressurize the soap solution through the gas compression assembly 3, and then open the manual switch 203, so that the soap solution passes through the liquid outlet pipe 205 and the hose 201 and is sprayed out through the nozzle 204. The hose 201 can be selected at any position for spraying, and the nozzle 204 can ensure uniform spraying of the soap solution, improving the accuracy of subsequent airtightness detection.

[0033] On both sides of the outer wall of the ring groove end cap 101, handles 106 are fixedly installed, which is convenient for grasping and applying force during use.

[0034] The following combines the attached Figures 1 to 4 The implementation principle of the present utility model is described as follows:

[0035] During use, first add the prepared soap solution into the soap solution box 206 through the liquid injection port 202, use the handles 106 on both sides of the outer wall of the ring groove end cap 101 to screw the threaded column 107 into the connection of the heat preservation pipe where the airtightness needs to be detected, threadedly connect the soap solution box 206 with the air delivery assembly 1 through the threaded hole and the screw rod 102 in the ring groove end cap 101, then open the air inlet pipe 103 to deliver air to the connection of the heat preservation pipe, observe the inlet air pressure through the pressure gauge 105, after reaching a certain value, close the valve 104, pull up the piston barrel 301, the leather cup 303 slides upward along the gas compression chamber 309, and the external air enters the gas compression chamber 309 below the leather cup 303 through the ventilation hole 306. When the leather cup 303 is moved downward, the pressure in the gas compression chamber 309 increases accordingly, and the leather cup 303 will fully expand and contact the inner wall of the gas compression chamber 309. Repeating this way, the compressed air enters the air storage chamber 307 through the one-way air inlet valve 305, and then enters the liquid storage chamber 308 through the one-way air outlet valve 304. The pressure in the liquid storage chamber 308 continuously increases, and the soap solution passes through the liquid outlet pipe 205 and the hose 201, and finally is sprayed out through the nozzle 204. The hose 201 can be selected at any position for spraying, and the nozzle 204 can ensure uniform spraying of the soap solution, improving the accuracy of subsequent airtightness detection.

[0036] The above shows and describes the basic principle, main features and advantages of the present utility model. Those skilled in the art of this industry should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only the preferred examples of the present utility model, and do not limit the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. An airtightness detection device for a heat-insulating pipe, comprising an air delivery component (1), characterized in that: A soap liquid delivery component (2) is detachably connected inside the gas transmission component (1), and a gas compression component (3) is arranged inside the soap liquid delivery component (2). The gas transmission component (1) includes a threaded post (107), and a ring groove end cap (101) is fixedly connected to the top of the threaded post (107). A screw rod (102) protruding upward is fixedly connected to the center inside the ring groove end cap (101). An air inlet pipe (103) communicating with the outside is provided inside the threaded post (107). The soap liquid delivery component (2) includes a soap liquid box (206). An independent liquid storage cavity (308), a gas storage cavity (307), and a gas compression cavity (309) are arranged inside the soap liquid box (206). A threaded hole is opened at the center of the bottom of the soap liquid box (206), and the threaded hole is threadedly connected to the screw rod (102).

2. The airtightness detection device for a heat preservation pipe according to claim 1, wherein: A movable plug cylinder (301) is arranged inside the gas compression cavity (309). A plug rod (302) is fixedly connected to the top of the plug cylinder (301). A ventilation hole (306) is opened at the top of the plug cylinder (301), and the ventilation hole (306) communicates with the gas compression cavity (309). A leather cup (303) is fixedly connected to the bottom of the plug cylinder (301), and the outer wall of the leather cup (303) is slidably connected to the inner wall of the gas compression cavity (309).

3. The airtightness detection device for a heat preservation pipe according to claim 2, wherein: A one-way intake valve (305) is arranged between the bottom of the gas compression cavity (309) and the bottom of the gas storage cavity (307). A one-way outlet valve (304) is arranged on the top of the gas storage cavity (307) close to one side of the liquid storage cavity (308).

4. The airtightness detection device for a heat preservation pipe according to claim 3, wherein: A liquid outlet pipe (205) is arranged inside the liquid storage cavity (308). A manual switch (203) is arranged at the part of the liquid outlet pipe (205) located outside the liquid storage cavity (308). A hose (201) is communicated with the outside of the liquid outlet pipe (205), and a spray head (204) is arranged at the end of the hose (201).

5. The airtightness detection device for a heat preservation pipe according to claim 1, characterized in that: The height of the screw rod (102) is the same as the length of the threaded hole at the bottom of the soap liquid box (206).

6. The airtightness detection device for a heat preservation pipe according to claim 5, characterized in that: A liquid injection port (202) is opened at the top of the soap liquid box (206).

7. An airtightness detection device for a heat preservation pipe according to claim 6, characterized in that: The outer wall of the threaded post (107) is provided with threads. One end of the air inlet pipe (103) communicates with the side wall of the threaded post (107), and the other end communicates with the bottom end of the threaded post (107). A pressure gauge (105) and a valve (104) are installed on the air inlet pipe (103) on the side wall of the threaded post (107).

8. A thermal insulation pipe airtightness detection device according to claim 1, characterized in that: Two handles (106) are fixedly installed on both sides of the outer wall of the ring groove end cap (101).

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