CN224004583U - Mechanical leak detection device for floating pipe - Google Patents

Abstract

This utility model belongs to the field of pipeline leak detection technology, specifically relating to a mechanical leak detection device for floating pipes. The mechanical leak detection device for floating pipes includes a valve cylinder with a transparent cover at its front end. A one-way valve is connected to the rear end of the valve cylinder. A piston body is installed inside the valve cylinder, with a large-diameter section at its rear end, which is dynamically sealed to the inner wall of the valve cylinder. The front end of the piston body is a small-diameter section, on which a first spring is fitted. A limiting flange is provided on the inner wall of the valve cylinder, and the first spring is positioned between the large-diameter section and the limiting flange. An indicator rod is located at the front end of the small-diameter section. When the first spring is compressed, the indicator rod enters the transparent cover. This leak detection device for floating pipes uses pure mechanical power and features a simple structure, convenient use, and safe and stable operation.

Description

Mechanical leak detection device for floating pipe

Technical Field

The utility model belongs to the technical field of pipeline leakage detection, and particularly relates to a mechanical leakage detection device for a floating pipe.

Background

The current leakage detecting alarm for the marine floating hose mostly uses elements such as a pressure sensor, a flow sensor or an ultrasonic sensor, but the leakage detecting device is powered by a power supply, and the power supply is required to be replaced periodically to realize normal operation of the alarm, so that the service life of the alarm is greatly limited, the later maintenance work is inconvenient, the electronic device is high in price, the function is unstable in the use process, abnormal faults are easy to occur, and the economic benefit is poor. Therefore, a mechanical leak detection device that does not require power and is reusable is a problem in the art.

Disclosure of utility model

The utility model aims to provide a floating pipe leakage detection device with pure mechanical power, which has the characteristics of simple structure, convenient use, safety and stability.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

The mechanical leak detection device for the floating pipe is characterized by comprising a valve cylinder, wherein a transparent cover is arranged at the front end of the valve cylinder, a one-way valve is connected to the rear end of the valve cylinder, a piston body is arranged inside the valve cylinder, a thick diameter section is arranged at the rear end of the piston body, the thick diameter section is in dynamic sealing connection with the inner wall of the valve cylinder, the front end of the piston body is a thin diameter section, a first spring is sleeved on the thin diameter section, a limit flange is arranged on the inner wall of the valve cylinder, the first spring is arranged between the thick diameter section and the limit flange, an indication rod is arranged at the front end of the thin diameter section, and after the first spring is pressed, the indication rod enters the transparent cover.

Additional technical features of the mechanical leak detection device forming the floating pipe further comprise:

The dynamic sealing connection mode of the thick-diameter section of the piston body and the inner wall of the valve cylinder is that at least one annular clamping groove is arranged on the thick-diameter section, and a first sealing ring is positioned in the annular clamping groove;

The one-way valve comprises a valve body, the front end of the valve body is connected with the rear end of the valve barrel through threads, the rear end of the valve body is a plug provided with a valve hole, the valve hole corresponds to the top bead, a second spring and a limiting baffle are arranged in the valve body, the second spring is arranged between the top bead and the limiting baffle, a plurality of through holes are formed in the limiting baffle, and the through holes are communicated with the valve barrel;

The valve comprises a valve barrel, a valve body, a floating pipe monitoring port, a first sealing ring, a second sealing ring, a third sealing ring and a third sealing ring, wherein the rear end of the valve barrel is provided with an internal thread which is connected with the valve body of the one-way valve, and the threaded connection part is provided with the second sealing ring;

The limiting baffle plate is connected with the inner wall of the valve body through a clamp spring, and the clamp spring is arranged at the outer side of the limiting baffle plate;

-the transparent cover comprises a base nut, wherein the base nut is connected with the external thread at the front end of the valve cylinder, and a transparent cover body is arranged on the outer side of the base nut.

Compared with the prior art, the mechanical leakage detection device for the floating pipe has the advantages that the rear end of the valve barrel of the leakage detection device is connected with the one-way valve, the piston body is arranged in the valve barrel, the rear end of the piston body is provided with the thick-diameter section, the thick-diameter section is in dynamic sealing connection with the inner wall of the valve barrel, so that the one-way valve is opened under pressure, leakage medium enters the valve barrel, pressure is generated on the piston body, the front end of the piston body is a thin-diameter section, the thin-diameter section is sleeved with the first spring, the first spring is positioned between the thick-diameter section and the limiting flange on the inner wall of the valve barrel, the front end of the thin-diameter section is provided with the indication rod, the indication rod enters the transparent cover after the first spring is pressed, leakage signals can be visually displayed, the leakage detection device breaks away from the problem of power supply endurance, and the leakage detection device adopts a pure mechanical power mode, has the advantages of being long in a stable, simple in structure, convenient to use, safe and durable.

Drawings

Fig. 1 is a schematic diagram of a mechanical leak detection apparatus for a floating pipe according to the present utility model.

Detailed Description

The following describes in further detail the structure and operation of the apparatus for mechanical leak detection of a flotation tube according to the present utility model, with reference to the accompanying drawings, it being evident that the embodiments described are only some, but not all, of the embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, unless otherwise indicated, the terms "inner/outer," "front/rear," and the like refer to an orientation or positional relationship based on that shown in the drawings, for convenience of description and simplicity of description only, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the utility model.

It should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "connected," "configured/arranged" and "provided" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, or indirectly connected via an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1, the mechanical leak detection device structure of the floating pipe comprises a valve cylinder 1, a transparent cover 2 is arranged at the front end of the valve cylinder 1, a one-way valve 3 is connected at the rear end of the valve cylinder 1, a piston body 4 is arranged inside the valve cylinder 1, a thick diameter section 41 is arranged at the rear end of the piston body 4, the thick diameter section 41 is in dynamic sealing connection with the inner wall of the valve cylinder 1, a thin diameter section 42 is arranged at the front end of the piston body 4, a first spring 43 is sleeved on the thin diameter section 42, a limit flange 44 is arranged on the inner wall of the valve cylinder 1, the first spring 43 is arranged between the thick diameter section 41 and the limit flange 44, an indication rod 45 is arranged at the front end of the thin diameter section 42, and after the first spring 43 is pressed, the indication rod 45 enters the transparent cover 2.

The leakage detection device has the working principle that the rear end of a valve cylinder 1 of the leakage detection device is connected with a one-way valve 3, the one-way valve is connected with a monitoring port of a floating pipe, the floating pipe generally comprises an inner layer and an outer layer, the monitoring port is communicated with a gap between layers, if the inner layer of the floating pipe breaks, leaked oil gas medium enters the valve cylinder 1 from the one-way valve 3, the rear end of the piston body 4 is a thick diameter section 41 for receiving pressure from the one-way valve 3 and dynamically sealing and contacting with the inner wall of the valve cylinder 1 due to the arrangement of a piston body 4 in the valve cylinder 1, a thin diameter section 42 at the front end of the piston body 4 is sleeved with a first spring 43, the first spring is arranged between the thick diameter section 41 and a limit flange 44 of the inner wall of the valve cylinder 1, and after the rear end of the piston body 4 is pressed, the first spring 43 is further extruded, so that an indication rod 45 at the front end of the thin diameter section 42 enters a transparent cover 2 at the front end of the valve cylinder 1 to be perceived by a person, and the inner layer of the floating pipe is prompted to leak.

When the leakage pipe is overhauled, medium conveying in the pipe is cut off, after external pressure is lost by the one-way valve 3, the internal valve core is reset, the piston body 4 in the valve cylinder 1 is retracted under the action of the first spring 43, the indication rod 45 at the front end returns to the valve cylinder 1, and the leakage detection device is recycled.

In the mechanical leak detection device structure of the floating pipe,

Preferably, the dynamic sealing connection mode between the thick diameter section 41 of the piston body 4 and the inner wall of the valve cylinder 1 is that at least one circumferential clamping groove 5 is arranged on the thick diameter section 41, a first sealing ring 61 is positioned in the circumferential clamping groove 5, the first sealing ring 61 is made of fluororubber, silicone rubber, polytetrafluoroethylene or nitrile rubber, and the like, and has the advantages of strong weather resistance, high chemical stability, long service life, stable function, low friction coefficient and more sensitive action after the piston body 4 senses leakage pressure;

In an embodiment, the check valve 3 includes a valve body 31, the front end of the valve body 31 is connected with the rear end of the valve barrel 1 through threads 71, the rear end of the valve body 31 is provided with a seal of a valve hole 32, the valve hole 32 corresponds to the top bead 33, a second spring 34 and a limit baffle 35 are arranged inside the valve body 31, the second spring 34 is arranged between the top bead 33 and the limit baffle 35, namely, in an initial state, the second spring 34 presses the top bead 33 on the valve hole 32 to seal the check valve 3, if the leakage pressure exceeds the pressure of the second spring 34, the top bead 33 is separated from the valve hole 32, a leakage medium enters the check valve 3, a plurality of through holes 351 are arranged on the limit baffle 35, the through holes 351 are communicated with the valve barrel 1, the leakage medium further enters the valve barrel 1 to generate pressure on the piston body 4;

Preferably, the rear end of the valve cylinder 1 is provided with an internal thread, the internal thread is connected with the valve body 31 (external thread) of the one-way valve 3 (namely, a threaded connection 71), the threaded connection 71 is provided with a second sealing ring 62, namely, after being screwed with each other, the second sealing ring 62 is tightly pressed, the cylinder body of the valve cylinder 1 is provided with an external thread 72, the external thread 72 is connected with a floating pipe monitoring port (internal thread), the threaded connection is provided with a third sealing ring 63, namely, after being screwed with each other, the third sealing ring 63 is tightly pressed, the mechanical threaded connection is convenient for assembly and disassembly, and the sealing ring ensures the overall sealing performance of the valve cylinder 1 and the problems of medium leakage and the like do not occur;

further, the limiting baffle 35 is connected with the inner wall of the valve body 31 through a clamp spring 36, the clamp spring 36 is arranged at the outer side of the limiting baffle 35, and the displacement of the limiting baffle 35 in the axial direction is limited, so that the second spring 34 is ensured to stably and effectively press the top bead 33;

preferably, the above-mentioned transparent cover 2 adopts the detachable connection with the valve cylinder 1, it includes base nut 21, base nut 21 and the external screw thread connection of valve cylinder 1 front end, the outside of base nut 21 sets up transparent cover body 22, transparent cover body 22 adopts the ya keli material, be close to glass, the luminousness is high, be convenient for observe by naked eyes, transparent cover body 22 and base nut 21 can be integrative material, also can adopt the assembled form, set up the flange at the outer inner wall of base nut outside, the border of transparent cover 2 body sets up outer boss, outer boss and flange contact cooperation (also can add the sealing washer), leak pressure increase in the valve cylinder 1 promptly, outer boss compresses tightly with the flange more.

The above embodiments are only for illustrating the technical solution of the present utility model, and are not limited to the implementation conditions of the present utility model, so that other modifications of the technical solution of the present utility model, or the equivalent of the structural dimensions and internal structures, should be included in the scope of the claims of the present utility model without departing from the spirit and scope of the technical solution of the present utility model.

Claims (6)

1. The mechanical leak detection device for the floating pipe is characterized by comprising a valve cylinder, wherein a transparent cover is arranged at the front end of the valve cylinder, a one-way valve is connected to the rear end of the valve cylinder, a piston body is arranged inside the valve cylinder, a thick diameter section is arranged at the rear end of the piston body, the thick diameter section is in dynamic sealing connection with the inner wall of the valve cylinder, the front end of the piston body is a thin diameter section, a first spring is sleeved on the thin diameter section, a limit flange is arranged on the inner wall of the valve cylinder, the first spring is arranged between the thick diameter section and the limit flange, an indication rod is arranged at the front end of the thin diameter section, and after the first spring is pressed, the indication rod enters the transparent cover.

2. The mechanical leak detection device for floating pipes of claim 1, wherein the dynamic seal connection between the thick diameter section of the piston body and the inner wall of the valve cylinder is that at least one annular clamping groove is formed in the thick diameter section, and a first sealing ring is positioned in the annular clamping groove.

3. The mechanical leak detection device for the floating pipe of claim 1, wherein the one-way valve comprises a valve body, the front end of the valve body is connected with the rear end of the valve barrel through threads, the rear end of the valve body is provided with a plug of a valve hole, the valve hole corresponds to the top bead, a second spring and a limiting baffle are arranged in the valve body, the second spring is arranged between the top bead and the limiting baffle, a plurality of through holes are formed in the limiting baffle, and the through holes are communicated with the valve barrel.

4. The mechanical leak detection device for the floating pipe according to claim 3, wherein the rear end of the valve barrel is provided with an internal thread, the internal thread is connected with a valve body of the one-way valve, a second sealing ring is arranged at the threaded connection position, the barrel body of the valve barrel is provided with an external thread, the external thread is connected with a monitoring port of the floating pipe, and a third sealing ring is arranged at the threaded connection position.

5. The mechanical leak detection device for floating pipes of claim 3, wherein the limiting baffle is connected with the inner wall of the valve body through a snap spring, and the snap spring is arranged on the outer side of the limiting baffle.

6. The mechanical leak detection device for a floating pipe according to claim 1, wherein the transparent cover comprises a base nut, the base nut is connected with the external thread at the front end of the valve cylinder, and a transparent cover body is arranged on the outer side of the base nut.