CN211205658U

CN211205658U - Pressure testing device for detecting sealing performance of electric heating tube

Info

Publication number: CN211205658U
Application number: CN201922249066.5U
Authority: CN
Inventors: 胡志新
Original assignee: Yangzhou Xintai Electric Heating Components Manufacturing Co ltd
Current assignee: Yangzhou Xintai Electric Heating Components Manufacturing Co ltd
Priority date: 2019-12-16
Filing date: 2019-12-16
Publication date: 2020-08-07
Anticipated expiration: 2029-12-16

Abstract

The utility model discloses a pressure test device for detecting the sealing performance of an electric heating tube in the field of electric heating tubes, which comprises a machine body, wherein a rear machine base and a fixed block are arranged on the machine body, the fixed block and the rear machine base are arranged oppositely, two ends of the fixed block are respectively connected with a fixed column, a hydraulic oil cylinder is arranged on the rear machine base, the end head of the hydraulic oil cylinder is connected with a fastening cutter, a baffle block is arranged on the surface of the fixed column opposite to the rear machine base, one end of the baffle block, which is positioned at the inner side of the machine body, extends out of the fixed column, a placing block is arranged right below the baffle block, and the placing block is arranged on the fixed block and; through extruded mode for the tube hole on the ring flange can be at the effect of pressure shrink inwards, tightly entangles the electrothermal tube and bites tightly, has avoided the not firm problem of welding, and the junction of electrothermal tube and ring flange is difficult to be corroded, the utility model is used for the fixed of electrothermal tube and ring flange.

Description

Pressure testing device for detecting sealing performance of electric heating tube

Technical Field

The utility model relates to an electrothermal tube testing arrangement.

Background

In the prior art, in order to judge the tightness between the pipe body and the flange of the electric heating pipe, a water pressure test on the electric heating pipe is required. The electric heating tube is inserted into the closed cavity and tightly presses the flange, water is soaked at the other side of the flange, then gas with certain pressure is introduced into the cavity, and whether bubbles overflow from the welding position of the flange is observed at one side of the water soaking side, so that the tightness of the tube body and the flange is judged. However, when the product has a slight leakage, the product does not necessarily generate bubbles or the generated bubbles are extremely small and are not easy to be perceived by naked eyes, and particularly after long-time observation, the eye fatigue is caused, misjudgment of the product is more likely to occur, so that the product is put into the market, and potential safety hazards exist. Therefore, the detection device and the detection method have the problem of inaccurate detection.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a pressure testing device that electrothermal tube leakproofness detected, the detection that can be accurate whether has the problem of leakproofness in the electrothermal tube, has avoided the erroneous judgement to the product.

In order to achieve the purpose, the utility model provides a pressure testing device that electrothermal tube leakproofness detected, the on-line screen storage device comprises a base, be provided with the support on the base, be provided with rotary mechanism on the support, the last pressure testing container that is provided with of rotary mechanism, the afterbody of pressure testing container is provided with the pressurization structure, the inserted hole is seted up at the top of pressure testing container, the internal diameter of container is greater than the external diameter of electrothermal tube.

Compared with the prior art, the utility model has the advantages that the pressure test container is in a vertical state, the pressurizing structure is closed, water is poured from the insertion hole, then the electrothermal tube with the test is sent into the pressure test container through the insertion hole, the flange and the end of the electrothermal tube are exposed outside the insertion hole, the pressure test container is obliquely placed through the rotating mechanism, the insertion hole is lower than the tail part of the pressure test container, the pressurizing structure pressurizes in the pressure test container and maintains the pressure for a certain time, if water stain appears between the electrothermal tube body and the flange, the sealing between the electrothermal tube body and the flange is inevitably indicated, and because the whole electrothermal tube body is soaked by the oblique placement in the pressure test container, under the action of pressure and gravity, even if micro leakage appears between the electrothermal tube body and the flange, the water stain of the silk still seeps, the silk can be sensed by touching with hands, even if eyes are fatigued, also can be very accurate detect whether there is the problem of leakproofness of electrothermal tube, the on-line screen storage device comprises a base, be provided with the support on the base, be provided with rotary mechanism on the support, the last pressure testing container that is provided with of rotary mechanism, the afterbody of pressure testing container is provided with the pressurization structure, the inserted hole is seted up at the top of pressure testing container, the internal diameter of container is greater than the external diameter of electrothermal tube, the utility model is used for the leakproofness with the electrothermal tube detect.

As a further improvement, the support is including setting up stand one and stand two in the base both sides respectively, stand one highly is greater than stand two, the stand links to each other with the base once through the stiffener, rotary mechanism sets up the upper portion at stand one, and the rotatory back of pressure testing container like this, one end is pounded stand upper portion with the setting and is connected, and one end is shelved on stand two, and the pressure testing container slope is placed, and its inserted hole height is less than the afterbody, and the tip that the electrothermal tube stretches out the pressure testing container simultaneously is unsettled, avoids the in-process of rotatory pressure testing container again to collide with base or workstation, leads to the product to damage.

As a further improvement, the rotary mechanism includes the rotation axis, the rotation axis sets up the upper portion at stand one, the cover is equipped with the container cover on the rotation axis, the pressure testing container is pegged graft in the container cover, and rotation axis rotation drives the container cover and rotates like this, and then makes the pressure testing container rotate, can very conveniently change the state of placing of pressure testing container.

As a further improvement, the pressurization structure includes the breather pipe, the afterbody of pressure testing container is inserted to the upper end of breather pipe, the lower extreme of breather pipe sets up the air inlet, and the air inlet links to each other with the intake pipe through the admission valve, the gas outlet has been seted up at the middle part of breather pipe, the gas outlet links to each other with the outlet duct through discharge valve, like this before detecting, closes discharge valve and admission valve earlier for pressure testing container bottom is airtight, and after the pressure testing container inserted the electrothermal tube that awaits measuring, then the slope was placed, opens the admission valve again and pressurizes, after the detection, then closes the admission valve, opens discharge valve and decompress until the pressure in the pressure testing container is whole to be discharged, and convenient operation is.

As the utility model discloses a further improvement, the top of stand two is provided with the cushion, and when trying to press to hold the slope like this, all the other cushion contacts avoid carrying out hard contact with stand two, lead to the pressure testing container damaged to appear.

As the utility model discloses a further improvement, the inserted hole is provided with ring flange one, ring flange one matches with the ring flange of electrothermal tube two mutually, the upper surface of ring flange one is provided with sealed the pad, can guarantee like this that the ring flange of inserted hole one and the ring flange of the electrothermal tube of examination await measuring between two well sealed, and the pressure testing container is after the pressurization, and wherein water can not follow ring flange one and ooze between the ring flange two, improves the precision that detects.

Drawings

Fig. 1 is a schematic view of the structure of the utility model in the reset state.

Fig. 2 is a schematic diagram of the structure of the detection state of the present invention.

The pressure testing device comprises a cushion 1, a second upright post 2, a reinforcing rod 3, a base 4, a first upright post 5, a vent pipe 6, an air inlet 7, an air inlet valve 8, a second flange 9, a first flange 10, an electric heating pipe 11, a pressure testing container 12, a rotating shaft 13, a container sleeve 14, an air outlet 15, an exhaust valve 16, an air outlet 17 and an air inlet pipe 18.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

the pressure testing device for detecting the sealing performance of the electric heating tube shown in fig. 1-2 comprises a base 4, wherein a support is arranged on the base 4, a rotating mechanism is arranged on the support, a pressure testing container 12 is arranged on the rotating mechanism, a pressurizing structure is arranged at the tail part of the pressure testing container 12, an insertion opening is formed in the top part of the pressure testing container 12, and the inner diameter of the container is larger than the outer diameter of the electric heating tube; the support comprises a first upright post 5 and a second upright post 1 which are respectively arranged on two sides of the base 4, the height of the first upright post 5 is greater than that of the second upright post 1, the first upright post 5 is connected with the base 4 through a reinforcing rod 3, and the rotating mechanism is arranged on the upper part of the first upright post 5; the rotating mechanism comprises a rotating shaft, the rotating shaft is arranged at the upper part of the first upright post 5, a container sleeve 14 is sleeved on the rotating shaft, and the pressure test container 12 is inserted into the container sleeve 14; the pressurizing structure comprises a vent pipe 6, the upper end of the vent pipe 6 is inserted into the tail part of the pressure test container 12, the lower end of the vent pipe 6 is provided with an air inlet 7, the air inlet 7 is connected with an air inlet pipe 18 through an air inlet valve 8, the middle part of the vent pipe 6 is provided with an air outlet 15, and the air outlet 15 is connected with an air outlet pipe 17 through an exhaust valve 16; the top of the second upright post 1 is provided with a soft cushion 2; the insertion opening is provided with a first flange 10, the first flange 10 is matched with a second flange 9 of the electric heating tube, and a sealing gasket is arranged on the upper surface of the first flange 10.

The pressure testing method for detecting the sealing performance of the electrothermal tube shown in fig. 1-2 comprises the following specific steps:

step 1, rotating a pressure test container 12 to enable the pressure test container 12 to be in a vertical state, and closing an exhaust valve 16 and an intake valve 8;

step 2, adding water into the pressure testing container 12 from the insertion opening of the pressure testing container 12, and keeping a distance between the water surface and the insertion opening of the pressure testing container 12;

step 3, inserting the electrothermal tube to be tested into a pressure test container 12 from the first flange 10 at the insertion port, and fixedly connecting the first flange 10 with the second flange 9;

step 4, rotating the pressure test container 12 to enable the pressure test container 12 to be placed on the second upright post 1 and to be in an inclined state, wherein the height of an insertion opening of the pressure test container 12 is lower than that of the rotating shaft, and the height of the water surface of the pressure test container 12 in the inclined state is not lower than that of the rotating shaft 13;

step 5, connecting the air inlet pipe 18 with a pressurizing device, and opening the air inlet valve 8 to enable the pressure inside the pressure test container 12 to reach the set 1.2 MPa;

step 6, after 5-10 seconds of pressure maintaining time, observing whether the combination part of the outer wall of the electrothermal tube to be tested and the flange plate II 9 has water seepage or not, and detecting the insulation resistance value between the conductive part of the electrothermal tube and the shell by using an insulation resistance tester;

step 7, closing the air inlet valve 8, opening the exhaust valve 16, and closing the exhaust valve 16 after no pressure exists in the pressure test container 12;

and 8, restoring the pressure test container 12 to a vertical state, dismounting the electric heating tubes, and placing the electric heating tubes according to the test results in a classified mode.

The utility model discloses in, the pressure testing purpose has or not the water seepage in order to observe the union part of the outer wall of the pipe of the electrothermal tube that awaits measuring and ring flange two 9, whether detecting element surface has the sand hole gas pocket.

When the pressure testing container 12 is in a vertical state and no pressure exists in the pressure testing container, the pressure testing container is called a reset state, the exhaust valve 16 and the intake valve 8 are in a closed state at the moment, water for detection is poured into an insertion opening of the pressure testing container 12, the electric heating pipe 11 can be considered to be in a working state at the moment, a sealing gasket is added at a joint between the flange plate I10 and the flange plate II 9 to ensure the sealing of the joint between the electric heating pipe 11 and the pressure testing container 12, and a certain gap exists between the electric heating pipe and the inner wall of the water pressure container before pressure testing.

The pressure test container 12 is rotated to be in an inclined state, the inclined state of the pressure test container 12 is called a pressure test state, wherein the horizontal height of the insertion opening of the pressure test container 12 is lower than the horizontal height of the rotating shaft 13, the air inlet valve 8 is opened to ensure that the interior of the pressure test container 12 meets the test requirement of 1.2MPa, and the pressure test state ensures the test time to be 5-10 seconds, the water leakage of the joint part of the outer wall of the electric heating tube to be tested and the flange plate II 9 is observed, the insulation resistance tester is used for detecting the insulation resistance value between the conductive part of the electric heating tube and the shell, then the air inlet valve 8 is closed, the exhaust valve 16 is opened, the exhaust valve 16 is closed after no pressure intensity exists in the interior, finally the pressure test container 12 is reset to be in a vertical state, the electric heating tube is dismounted, and the electric heating tube is placed according to the test result in a classified mode, wherein the water in the pressure test container 12 does not need to be poured out, and the next electric heating tube 11 is continuously detected.

The whole detection process flow comprises the following steps: installing an electric heating tube 11, inclining a pressure test container 12, pressurizing, observing and detecting, closing an air inlet valve 8, opening an air release valve for pressure relief, closing the air release valve, resetting the pressure test container 12 to be in a vertical state, dismounting the electric heating tube 11, and repeating the process.

The present invention is not limited to the above embodiments, and based on the technical solutions of the present disclosure, those skilled in the art can make some substitutions and transformations to some technical features without creative labor according to the disclosed technical contents, and these substitutions and transformations are all within the protection scope of the present invention.

Claims

1. The utility model provides a pressure testing device that electrothermal tube leakproofness detected which characterized in that: the pressure testing device comprises a base, be provided with the support on the base, be provided with rotary mechanism on the support, the last pressure testing container that is provided with of rotary mechanism, the afterbody of pressure testing container is provided with the pressurization structure, the inserted hole is seted up at the top of pressure testing container, the internal diameter of container is greater than the external diameter of electrothermal tube.

2. The pressure testing device for detecting the sealing performance of the electrothermal tube according to claim 1, wherein: the support comprises a first upright post and a second upright post which are respectively arranged on two sides of the base, the height of the first upright post is greater than that of the second upright post, the first upright post is connected with the base through a reinforcing rod, and the rotating mechanism is arranged on the upper portion of the first upright post.

3. The pressure testing device for detecting the sealing performance of the electrothermal tube according to claim 2, wherein: the rotating mechanism comprises a rotating shaft, the rotating shaft is arranged on the upper portion of the first upright post, a container sleeve is sleeved on the rotating shaft, and the pressure test container is inserted into the container sleeve.

4. The pressure testing device for detecting the sealing performance of the electrothermal tube according to claim 3, wherein: the pressurization structure includes the breather pipe, the afterbody of pressure testing container is inserted to the upper end of breather pipe, the lower extreme of breather pipe sets up the air inlet, and the air inlet links to each other with the intake pipe through the admission valve, the gas outlet has been seted up at the middle part of breather pipe, the gas outlet links to each other with the outlet duct through discharge valve.

5. The pressure testing device for detecting the sealing performance of the electrothermal tube according to claim 4, wherein: and a soft cushion is arranged at the top of the second upright post.

6. The pressure test device for detecting the sealing performance of the electrothermal tube according to any one of claims 1 to 5, wherein: the insertion hole is provided with a first flange, the first flange is matched with a second flange of the electric heating tube, and the upper surface of the first flange is provided with a sealing gasket.