CN108562406B - A leak detection device for a marine airtight container - Google Patents

Abstract

The present invention proposes a leak detection device for a marine airtight container, which includes a detection port arranged on the top of the airtight container, a detection mechanism fixed on the detection port and a leak detection mechanism covered on the outer wall of the airtight container. The detection mechanism includes an adapter plate, There is a transfer channel in the adapter plate, the main insertion tube is provided at the bottom of the adapter plate, the first transfer tube and the second transfer tube are provided at the top of the adapter plate, and the first transfer tube communicates with the first channel through the transfer channel , the second adapter tube communicates with the second channel through the adapter channel, the first adapter tube is connected with the intake pipe, and is used to pass the detection gas into the airtight container, and the second adapter tube is connected with the pressure gauge for For detecting the air pressure in the airtight container, the invention is easy to operate, can identify the location of the leakage in time for processing, improves the safety performance, and improves the working efficiency.

Description

A leak detection device for a marine airtight container

technical field

The invention relates to a detection device, in particular to a leak detection device for a marine airtight container.

Background technique

At present, marine pressure vessels mainly include diesel engine cylinders, air cylinders, pump cylinders, etc., and the leak detection method usually adopts hydraulic test or pneumatic test.

During the air pressure test, the pressure should rise slowly until it reaches 10% of the specified test pressure and does not exceed 0.05MPa, keep the pressure for 5 minutes, and use soap liquid or other leak detection liquid to check all the welded joints and connections for the first time. , and retest after patching. After passing the initial leak inspection, slowly increase to 50% of the specified test pressure. If there is no abnormal phenomenon, then increase the pressure step by step at 10% of the specified test pressure until the specified test pressure is reached. After holding the pressure for 30 minutes, reduce the pressure to 87% of the specified test pressure, and keep it for a long enough time, and check all the welded joints and connection parts for leaks again. If there is leakage, repair it and then re-test according to the above regulations. The pressure shall remain constant during the inspection, and continuous pressurization shall not be used to maintain the test pressure constant. During the air pressure test, it is strictly forbidden to fasten the bolts under pressure and apply external force to the pressure components.

Patent CN201520083489.3 discloses a leak detection device for marine pressure vessels, including a pressure vessel and a vacuum pump, characterized in that a water tank is provided on one side of the vacuum pump, and two connecting pipelines are connected between the vacuum pump and the water tank. Wherein, the first connecting pipeline includes a reciprocating pump and a motor connected to the ejection water pipeline of the vacuum pump, and the second connecting pipeline includes a gas-liquid delivery pipe and a ventilation pipe.

Patent CN201720046125.7 discloses a gas leakage detection device, which includes a gas-collecting container. The gas-collecting container is composed of an upper container and a lower container distributed in the vertical direction. The air inlet pipe and the air outlet pipe outside the container, the air pump is arranged inside the air inlet pipe, and the bottom end of the lower container is provided with a gas sensor; the upper container and the lower container are separated by an isolation end plate extending in the horizontal direction, A gas collecting groove extending toward the interior of the lower container is arranged in the isolation end plate, and the gas collecting groove and the lower container are connected to each other; the above-mentioned gas leakage detection device and its detection method can be used for the leakage of sulfur hexafluoride gas in the electrical equipment environment. Efficient and accurate detection is carried out to ensure the safety of electrical equipment on the premise of effectively reducing the detection cost.

The above two methods have complex structures and low detection efficiency. If a leak occurs, the point of occurrence of the leak cannot be confirmed in time.

Contents of the invention

Aiming at the above problems, the present invention proposes a leakage detection device for a marine airtight container, which is easy to operate, can identify the location of the leakage in time for processing, improves safety performance, and improves work efficiency.

The specific technical scheme is as follows:

A leak detection device for a marine airtight container, comprising a detection port arranged on the top of the airtight container, a detection mechanism fixed on the detection port, and a leak detection mechanism covered on the outer wall of the airtight container;

The detection mechanism includes an adapter plate. An adapter channel is provided in the adapter plate. The bottom of the adapter plate is provided with a main insertion tube. The main insertion tube has a square prism structure. The main insertion tube is provided with a main insertion channel with a square structure , the main insertion channel is connected with the transfer channel, the top of the transfer channel is provided with a guide block with an isosceles trapezoidal structure, the bottom of the guide block is provided with a guide partition, and the guide partition extends through the main connection tube from top to bottom To the outside of the main plug-in pipe, the guide partition divides the main plug-in channel into a first channel and a second channel; the top of the adapter plate is provided with a first transfer tube and a second transfer tube, and the first transfer tube passes through the transfer channel and The first passage is connected, the second transfer pipe is connected with the second passage through the transfer passage, the first transfer pipe is connected with the air inlet pipe, and is used to pass the detection gas into the airtight container, and the second transfer pipe is connected with the pressure The meter is connected to detect the air pressure in the airtight container;

The outer wall of the main splice pipe is provided with a ring of plug-in blocks and a ring of adjustment ring, the plug-in block is located below the adjustment ring, the cross-sectional shape of the plug-in block is a right-angled trapezoidal structure with a large top and a small bottom, and the outer wall of the adjustment ring is circular structure, the outer wall of the adjustment ring is provided with external threads, and a locking ring is arranged on the adjustment ring through thread fit;

The locking ring includes an upper locking ring and a lower locking ring. The thickness of the upper locking ring is greater than the thickness of the lower locking ring. The inner wall of the upper locking ring and the inner wall of the lower locking ring are provided with the inner wall with the same spiral direction. thread;

The outer wall of the detection port is a circular structure, and the outer wall of the detection port is provided with external threads. The external thread on the outer wall of the detection port matches the internal thread on the inner wall of the lower locking ring, and the spiral of the external thread on the outer wall of the adjustment ring. In the opposite direction, there is a detection channel with a square structure in the detection port, and a circle of baffles is provided on the top of the detection channel; the main plug-in tube is inserted into the detection channel of the detection port, and the distance between the baffle and the outer wall of the main plug-in tube is greater than The thickness of the bottom of the plug-in block is smaller than the thickness of the top of the plug-in block. The plug-in block is inserted into the bottom of the baffle, and the lower locking ring is screwed down to lock on the detection port. Cooperate with the thread of the adjusting ring to move upward until the plug-in block fits with the baffle, so as to realize locking and fixing;

The leak detection mechanism includes several detection rings with arc-shaped structure, the detection rings are fitted on the outer wall of the airtight container, and are inserted and fixed by clamping strips;

The inner wall of the detection ring is evenly provided with a number of detection grooves with openings at the bottom. The detection grooves are distributed in an array. An air bag made of film is fixed at the bottom of each detection groove. There are also several detection grooves on the detection ring. A corresponding test slot with an opening on the top, each test slot is also provided with a test mechanism, the test mechanism includes a test rod, the top of the test rod is provided with an upper limit plate, the bottom of the test rod is provided with a lower limit plate, and the test rod Pass through the detection ring so that the upper limit plate is set in the test slot, and the lower limit plate is on the air bag. There is a circle of adjustment plate on the test rod, and a spring is arranged between the adjustment plate and the top of the detection slot. When the air bag is in When it is full of air, the spring is in a compressed state, and the upper limit plate is flush with the outer surface of the detection ring.

Further, the inner wall of the first passage is provided with a plurality of first air guide strips, and the inner wall of the second passage is provided with a plurality of second air guide strips, the cross sections of the first air guide strips and the second air guide strips are right triangles structure, the inclination direction of the first air guide strip is downward, and the inclination direction of the second air guide strip is upward.

Further, a spring hinge is used to fix the flap on the detection channel of the detection port, and the flap fits with the bottom of the main insertion tube.

The beneficial effects of the present invention are:

The invention simultaneously detects the airtight container through the detection mechanism and the leak detection mechanism, and the detection mechanism is used for conventional inflation detection, which is easy to operate, has good sealing performance, and can ensure the accuracy of detection;

The leak detection mechanism is used to determine the location of the leak when a leak occurs. If a leak occurs, the gas will be continuously injected into the airtight container through the detection mechanism. The air bag at the leak point will be damaged under the action of air pressure. At this time, the air bag cannot continue to support The test rod, the test rod moves inward under the action of the spring, so that the upper limit plate falls into the test groove;

The operation is simple, the location of the leakage can be identified in time for processing, the safety performance is improved, and the work efficiency is improved.

Description of drawings

Fig. 1 is a sectional view of the present invention.

Fig. 2 is a top view of the present invention

Fig. 3 is a cross-sectional view of the detection mechanism of the present invention.

Fig. 4 is a sectional view of the detection ring of the present invention.

Detailed ways

In order to make the technical solution of the present invention clearer, the present invention will be further described below in conjunction with the accompanying drawings. Any solution obtained by equivalent replacement and conventional reasoning of the technical features of the technical solution of the present invention falls within the protection scope of the present invention.

reference sign

Airtight container 1, detection port 2, detection mechanism 3, leak detection mechanism 4, adapter plate 5, main connecting pipe 6, guide block 7, guide partition 8, first channel 11, second channel 12, first adapter tube 13. Second adapter pipe 14, air intake pipe 15, pressure gauge 16, socket block 17, adjustment ring 18, locking ring 19, upper locking ring 20, lower locking ring 21, detection channel 22, baffle plate 23 , detection ring 24, clip 25, detection groove 26, air bag 27, test groove 28, test rod 29, upper limit plate 30, lower limit plate 31, adjustment plate 32, spring 33, first air guiding strip 34, the first Two air guiding strips 35, flap 36.

As shown in the figure, a marine airtight container leakage detection device includes a detection port 2 arranged on the top of the airtight container 1, a detection mechanism 3 fixed on the detection port and a leak detection mechanism 4 coated on the outer wall of the airtight container;

The detection mechanism includes an adapter plate 5, an adapter channel is provided in the adapter plate, and a main insertion pipe 6 is arranged at the bottom of the adapter plate. connection channel, the main plug-in channel is connected with the transfer channel, the top of the transfer channel is provided with a guide block 7 with an isosceles trapezoidal structure, and the bottom of the guide block is provided with a guide partition 8, and the guide partition passes through from top to bottom The main plug-in pipe extends to the outside of the main plug-in pipe, and the guide partition divides the main plug-in channel into a first channel 11 and a second channel 12; the top of the adapter plate is provided with a first transfer tube 13 and a second transfer tube 14. A transfer tube communicates with the first channel through the transfer channel, the second transfer tube communicates with the second channel through the transfer channel, and the first transfer tube is connected with the air inlet pipe 15 for passing into the airtight container for detection With gas, the second adapter pipe is connected with the pressure gauge 16 for detecting the air pressure in the airtight container;

The outer wall of the main plug-in pipe is provided with a circle of plug-in blocks 17 and a circle of adjustment ring 18, the plug-in block is located below the adjustment ring, the cross-sectional shape of the plug-in block is a right-angled trapezoidal structure with a large top and a small bottom, and the outer wall of the adjustment ring is Circular structure, external thread is provided on the outer wall of the adjustment ring, and a locking ring 19 is arranged on the adjustment ring through thread fit;

The locking ring includes an upper locking ring 20 and a lower locking ring 21, the thickness of the upper locking ring is greater than the thickness of the lower locking ring, and the inner wall of the upper locking ring and the inner wall of the lower locking ring are provided with the same spiral direction. internal thread;

The outer wall of the detection port is a circular structure, and the outer wall of the detection port is provided with external threads. The external thread on the outer wall of the detection port matches the internal thread on the inner wall of the lower locking ring, and the spiral of the external thread on the outer wall of the adjustment ring. In the opposite direction, a detection channel 22 with a square structure is provided in the detection port, and a circle of baffles 23 is provided on the top of the detection channel; the main plug-in tube is inserted into the detection channel of the detection port, and the gap between the baffle plate and the outer wall of the main plug-in tube The distance is greater than the thickness of the bottom of the plug-in block and smaller than the thickness of the top of the plug-in block. The plug-in block is inserted into the bottom of the baffle, and the lower locking ring is screwed down to lock on the detection port while the main plug-in tube is locked. The tightening ring and the thread of the adjusting ring move upwards until the plug-in block fits with the baffle, so as to realize locking and fixing;

The leak detection mechanism includes a plurality of detection rings 24 of arc-shaped structure, the detection rings are attached to the outer wall of the airtight container, and are inserted and fixed by the clamp strip 25;

The inner wall of the detection ring is evenly provided with a number of detection grooves 26 with openings at the bottom, the detection grooves are distributed in an array, and an air bag 27 made of a film is fixed at the bottom of each detection groove, and a number of detection grooves are also arranged on the detection ring. The test groove 28 of the top opening of groove one-to-one correspondence, also be provided with a test mechanism in each detection groove, test mechanism comprises test rod 29, and the top of test rod is provided with upper limit plate 30, the bottom of test rod is provided with lower limit. Position plate 31, the test rod passes through the detection ring, so that the upper limit plate is arranged in the test groove, and the lower limit plate is on the air bag, and a circle of adjustment plate 32 is arranged on the test rod, between the adjustment plate and the top of the detection groove A spring 33 is provided, and when the air bag is full of air, the spring is in a compressed state, and the upper limit plate is flush with the outer surface of the detection ring.

Further, the inner wall of the first passage is provided with a plurality of first air guide strips 34, and the inner wall of the second passage is provided with a plurality of second air guide strips 35, and the cross sections of the first air guide strips and the second air guide strips are both Right triangle structure, the inclination direction of the first air guide strip is downward, and the inclination direction of the second air guide strip is upward.

Further, a spring hinge is used to fix the flap 36 on the detection channel of the detection port, and the flap fits with the bottom of the main insertion tube.

The invention simultaneously detects the airtight container through the detection mechanism and the leak detection mechanism, and the detection mechanism is used for conventional inflation detection, which is easy to operate, has good sealing performance, and can ensure the accuracy of detection;

The leak detection mechanism is used to determine the location of the leak when a leak occurs. If a leak occurs, the gas will be continuously injected into the airtight container through the detection mechanism. The air bag at the leak point will be damaged under the action of air pressure. At this time, the air bag cannot continue to support The test rod moves inwardly under the action of the spring, so that the upper limit plate falls into the test groove.

Claims (3)

1. a kind of closed container leak detecting device peculiar to vessel, it is characterized in that, including the detection mouth at the top of closed container is arranged in, The testing agency being fixed in detection mouth and the leak checking mechanism being coated on closed container outer wall；

Testing agency includes pinboard, and Switching-through channel is equipped in pinboard, and pinboard bottom is equipped with main insertion pipe, main insertion pipe Square prism structure is equipped with the main grafting channel that section is square structure, main grafting channel and Switching-through channel in main insertion pipe It is connected, section is equipped at the top of Switching-through channel and is isosceles trapezoidal structure and is laid in the guide pad in pinboard, guide pad bottom Equipped with kicker baffle, kicker baffle passes through the outside that main insertion pipe extends to main insertion pipe from top to bottom, and kicker baffle is inserted main It connects road and is separated into first passage and second channel；The first transfer tube and the second transfer tube, the first switching are equipped at the top of pinboard Pipe is connected by Switching-through channel with first passage, and the second transfer tube is connected by Switching-through channel with second channel, and first turn Adapter tube is connected, for being passed through detection gas into closed container with admission line, and the second transfer tube is connected with pressure gauge It connects, for detecting the air pressure in closed container；

The outer wall of main insertion pipe is equipped with a circle grafting block and a circle adjusts ring, and grafting block is located at the lower section for adjusting ring, grafting block Cross sectional shape be up big and down small ladder structure of right angle, adjust the rounded structure of outer wall of ring, the outer wall for adjusting ring is equipped with External screw thread adjusts one retaining ring of setting on ring by being threadedly engaged；

Retaining ring includes upper locking ring and lower retaining ring, and the thickness of upper locking ring is greater than the thickness of lower retaining ring, upper locking ring The inner wall of the upper and lower retaining ring of inner wall is equipped with the identical internal screw thread of the hand of spiral；

The outer wall of detection mouth is circular configuration, and the outer wall of detection mouth is equipped with external screw thread, and the external screw thread on detection mouth outer wall is under Internal screw thread on retaining ring inner wall matches, and with the externally threaded hand of spiral on adjusting ring outer wall on the contrary, setting in detection mouth There is the sense channel of square structure, a circle baffle is equipped at the top of sense channel；Main insertion pipe is plug-type to be arranged in detection mouth Sense channel in, the distance between baffle and main grafting pipe outer wall be greater than grafting block bottom thickness and be less than grafting block top The thickness in portion, grafting block be inserted into baffle bottom, lower retaining ring by be threadedly engaged be rotated down be locked in detection mouth while, Main insertion pipe upper locking ring with adjust ring be threadedly engaged effect under move up, until grafting block is bonded with baffle, thus Realization is locked；

Leak checking mechanism includes the detection ring of several arc-shaped structures, and detection ring fitting is arranged on the outer wall of closed container, and leads to Strip is crossed to be plugged and fixed；

The detection slot that several bottom openings are uniformly provided on the inner wall of ring is detected, detection slot is distributed in array, each detection slot Bottom fix an air bag made of film, detect be additionally provided on ring it is several it is one-to-one with detection slot at the top of open Mouthful test trough, be additionally provided with a mechanism for testing in each detection slot, mechanism for testing includes reference test bar, and the top of reference test bar is equipped with Upper limit plate, reference test bar bottom end be equipped with lower limiting board, reference test bar pass through detection ring, make thereon limit plate be arranged in test trough In, its lower limiting board withstand on air bag, reference test bar is equipped with a circle adjustable plate, at the top of adjustable plate and detection slot between be equipped with bullet Spring, when air bag is in the state full of gas, spring is in compressive state, and upper limit plate and the outer surface of detection ring are mutually neat It is flat.

2. a kind of closed container leak detecting device peculiar to vessel as described in claim 1, it is characterized in that, on the inner wall of first passage Equipped with several first wind guide strips, the inner wall of second channel is equipped with several second wind guide strips, the first wind guide strip and the second wind guide strip Section be triangular structure of right angle, the inclined direction of the first wind guide strip is downward, and the inclined direction of the second wind guide strip is upward.

3. a kind of closed container leak detecting device peculiar to vessel as described in claim 1, it is characterized in that, the sense channel of detection mouth Upper to fix trap by spring hinge, the bottom of trap and main insertion pipe fits.