JP3242865U - Oxide film detection structure and boiler piping - Google Patents

Abstract

The present invention provides an oxide film detection structure and a boiler pipe that solve the problem of not being able to timely detect the problem that when oxide leather is deposited on a boiler heat-receiving surface tube, the pipe is likely to burst. An oxidized leather detection device includes a transport unit and a connection unit. The conveying unit includes a conveying pipe 101 and a connecting pipe 102, one end of the conveying pipe 101 is connected to the connecting pipe 102, the other end of the conveying pipe 101 is connected to the boiler, and the detection unit includes a detector 201 and a hollow sleeve. 202 , the bottom of the hollow sleeve 202 is connected to the connecting pipe 102 , and the indication table 202 is installed on the top of the hollow sleeve 202 . [Selection drawing] Fig. 1

Description

This utility model relates to the field of oxide cortex inspection technology for boiler heat receiving surface tubes, particularly to the oxide cortex inspection structure and boiler piping.

At present, the high-temperature reheat boiler commonly used in supercritical and supercritical units of thermal power plants has high operating parameters. Oxidation tends to appear inside, and ferromagnetic oxide leather is formed on the inner wall of the heat-receiving surface pipe, and high-temperature oxide leather is inevitable in the pipe wall. According to the flow, it is often brought into the boiler to damage the flow-through part of the boiler, and sometimes deposits on the bottom of the piping, obstructing the steam flow, and if not timely, the furnace during the start-up of the boiler. It causes local overheating in the pipe, causes explosion tube accidents, and seriously affects the safe and stable operation of power plant equipment.
Oxide film deposition in the prior art often uses radiation, ultrasound or endoscopy. Radiation and ultrasound equipment are expensive, and radiation and ultrasound equipment both have a certain volume.
It is very inconvenient to move, and it is not possible to inspect the state of deposition of the oxide film at any time during inspection. cut the elbow, suck the oxide leather with a vacuum cleaner or a magnetic rod, then resume welding,
It can increase the welding cost and reduce the service life of the pipe.

The purpose of this section is to review some aspects of the embodiments of the present utility model and to briefly introduce some preferred embodiments. This section and the abstract of the specification and the title of the utility model of this application may be simplified or omitted so as not to obscure the purpose of this section, the abstract of the specification and the title of the utility model; cannot be used to limit the scope of this utility model.
Radiation, ultrasound or endoscopy are often used to detect oxide films in the above or prior art, radiation and ultrasound equipment are expensive, and both radiation and ultrasound equipment have a certain volume. Therefore, it is very inconvenient to move, and there is a problem that the state of deposition of the oxide film cannot be detected at any time during detection, and this utility model was proposed.
Therefore, the purpose of this utility model is to provide an oxide film detection structure for the purpose of solving the problem that the oxide film detection device is inconvenient to move and the deposition of the oxide film cannot be monitored at any time.
In order to solve the above technical problems, this utility model provides the following technical solutions: oxide film inspection structure;
the transport unit includes a transport pipe and a connecting pipe, one end of the transport pipe is connected to the connecting pipe, and the other end of the transport pipe is connected to the boiler;
A detection unit including an indicator table and a hollow sleeve, the bottom of the hollow sleeve is connected to the connecting tube, and the front indicator table is set on the top of the hollow sleeve.
As a preferred embodiment of the oxide film detection structure of the present utility model, the connecting pipe includes a connecting hole and a threaded hole, the connecting holes are provided at both ends of the connecting pipe, and the connecting holes are connected to the transport pipe. , the threaded hole is open to the top of the connecting tube, and the detector is connected to the threaded hole;
As a preferred embodiment of the oxide film detection structure of the present utility model, the indication table further comprises a dial and a fixed post, the dial is fixed to the top of the fixed post, and the bottom of the fixed post is threaded. , the bottom of the fixing column is screw-fixed with the top of the hollow sleeve.
As a preferred embodiment of the oxidized cortex detection structure of the present utility model, the dial further comprises a first horizontal rod, a fixing rod, a spring and a vertical rod, and the first horizontal rod is fixed to the inner wall of the dial. , the top portion of the pin fixing rod is fixed to the middle of the first horizontal rod, two pairs of the pin springs are provided, the top portions of the two pairs of springs are respectively fixed to the first horizontal rod, and the front There are two sets of recording vertical rods, the tops of the two sets of vertical rods are respectively fixed on both sides of the first horizontal rod, the inner side of the vertical rods is provided with a slide groove, and the bottom of the vertical rods is bolted. It is fixed to the dial via
As a preferred embodiment of the oxidized cortex detection structure of the present utility model, the dial further comprises a moving rod,
A second horizontal rod, a gear, a rack, and a post are installed, and two sets of said moving rods are installed, the bottoms of the front moving rods are respectively fixed on both sides of the second horizontal rod, and the front moving rod side is on the chute of the vertical rod. The bottoms of the front letter set springs are respectively fixed on the top of the second horizontal rod, the front letter rack is fixed on the top of the second horizontal rod, the fixed rod is provided with a moving groove, and the gear is a moving groove. , wherein the gear is matched with the rack teeth, and the top of the support rod is a second
It is fixed to the bottom of the transverse rod.
As a preferred embodiment of the oxide film detection structure of the present utility model, it further includes: the indicator table further includes a needle, a scale plate and a screw, the plate is fixedly connected to the screw, and the needle is rotated by the screw. connected, the number screw is fixed to the bottom of the vertical rod, and the number screw is fixed to the dial through the gear.
In a preferred embodiment of the oxide film detection structure of the present utility model, the detection module further comprises a protective disc and a magnet, the protective disc is fixed to the outside of the indicator table, and the magnet is fixed to the bottom of the vertical rod. be done.
The structure for detecting the oxide film of this utility model has a beneficial effect: this utility model increases the detection module for the device, so that the detection module is inconvenient for the movement of the device for detecting oxide film,
It solves the problem of not being able to monitor the build-up of oxide film at any time, which is likely to cause pipe rupture.
In the actual use process, to remove the oxidized leather, always cut the elbow of each pipe on the heat receiving surface, suck the oxidized leather with a vacuum cleaner or a magnetic rod, and then restore the welding, increasing the welding cost. , there is also the problem of reducing the service life of the pipe.
Therefore, another object of the present utility model is to provide a boiler duct aimed at solving the problem of requiring cut tube welding to remove the oxide film.
In order to solve the above technical problems, this utility model provides the following technical solutions: the boiler piping includes an inspection unit;
A connector unit including a connector and a seal ring, comprising a front connector attached to both ends of a connector tube and a front seal ring embedded in the connector.
As a preferred embodiment of the oxide film detection device of the present utility model, the connector includes a first flange and a second flange, the first flange is attached to one end of a connecting pipe, and the second flange is a conveying pipe. installed at one end, the first flange and the second flange are fixed by a nut, a first annular seal groove is formed on the inner four circumferences of the first flange, and the second
A second annular seal groove is formed around the inner circumference of the flange.
As a preferred aspect of the oxide film detection device of the present utility model, the seal ring includes the seal ring provided in a connection section between a baffle plate provided inside the housing and the housing, and the first One end of the spring further includes the seal ring connected to the baffle plate at the other end of the housing, and both ends of the seal ring are fitted into the first annular seal groove and the second annular seal groove, respectively. ing.

Another useful effect of the oxide skin detection device of this utility model: increasing the number of connecting parts for pipes, eliminating the use of elbows to cut each pipe on the heat receiving surface to remove oxide skin, and removing the direct connection parts It can reduce the welding cost and at the same time achieve the effect of increasing the service life of the pipe.

In order to describe the technical aspects of the embodiments of the present invention more clearly, the following briefly describes the drawings that need to be used in the description of the embodiments. Apparently, the drawings in the following description are only some embodiments of the present invention, and without creative labor, those skilled in the art will
Other drawings can be derived from these drawings. Now do the following:
1 is an overall schematic view of an oxide film detection structure; FIG. FIG. 4 is a schematic diagram of a detection unit of the oxide film detection structure; FIG. 4 is a detailed schematic diagram of an instruction table for an oxide film detection structure; 1 is a schematic diagram of a boiler line; FIG. Fig. 3 is a detailed schematic view of the connection unit of the boiler line; FIG. 4 is a front view of a seal ring of the oxide film detection structure;

In order to make the above objects, features, and advantages of the present utility model more clear and comprehensible, the specific embodiments of the present utility model are described in detail below together with the specification and drawings.
Although the following description sets forth many specific details for a thorough understanding of this utility model,
The utility model can also be implemented using other methods that can be analogized without violating the connotations of the utility model, and therefore the utility model is limited to the specific embodiments disclosed below. not.
Second, as used herein, "one embodiment" or "embodiment" refers to a particular feature, structure, or characteristic that can be included in at least one embodiment of the utility model. The appearances of "in one embodiment" in different places in this specification are not all referring to the same embodiment, nor are they referring to embodiments that are solely or selectively exclusive of other embodiments.

Example 1
Referring to FIG. 1, the first embodiment of the present utility model, this embodiment provides an oxidized skin detection device, which timely solves the problem of pipe rupture when oxidized skin is deposited in the pipe. Solving the inability to detect, it includes transport unit 100 and connection unit 200 .
Specifically, the transport unit 100 includes a transport pipe 101 and a connection pipe 102, and the transport pipe 10
1 is connected to a connecting pipe 102, the other end of the conveying pipe 101 is connected to a boiler,
The detection unit 200 includes a detector 201 and a hollow sleeve 202, the hollow sleeve 20
The bottom of 2 is connected to the connecting tube 102 and the indication table 202 is installed on the top of the hollow sleeve 202 .
Shown inside the top of the hollow sleeve 202 at the bottom of the indicator table 202, at this time, the two sides of the hollow sleeve 202 are further grooved, the main role of the groove is to further enhance the stability of the indicator table 202, At this time, the filling rubber material is mainly to prevent water vapor from entering the hollow sleeve 202, and there should be a gap at the connection point between the table 202 and the hollow sleeve 202. to prevent steam leakage and prevent equipment failure.

Example 2
Referring to FIGS. 2-3, the second embodiment of the present utility model, different from the previous embodiment, this embodiment provides the problem of installation and use of the oxide film detection structure.
Specifically, the connection pipe 102 includes connection holes 102a provided at both ends of the connection pipe 102, connection holes 102a connected to the transport pipe 101, and screw holes 102 opened at the top of the connection pipe 102.
b, and the detector 201 is connected to the screw hole 102b. Detector 201 further:
A dial 201a and a fixed post 201b are provided, the dial 201a is fixed to the top of the fixed post 201b, and grooves suitable for the bottom 201a of the dial are provided on both sides of the top of the fixed post 201b,
This is mainly to enable the indicator table to be fitted to the fixed column 201b. A moving space having a size suitable for the vertical rod 201a-4 is provided at the center of the top of the fixed column 201b. is filled with silica gel material, the main purpose of the silica gel material is to prevent the water vapor in the pipe from leaking along the hollow sleeve 202, the screw thread is open at the bottom of the fixed column 201b, and the fixed column 201b The bottom of the hollow sleeve 202 and the top of the hollow sleeve 202 are fixed by screws.
1a-3, a first horizontal rod 201a-1 including a vertical rod 201a-4 is fixed to the inner wall of the dial 201a, the top of the fixed rod 201a-2 is fixed in the middle of the first horizontal rod 201a-1, Two sets of springs 201a-3 are provided, the tops of the two sets of springs 201a-3 are respectively fixed to the first horizontal rods 201a-1, two sets of vertical rods 201a-4 are provided, and two sets of vertical rods 201a-4 are provided. is fixed to both sides of the first horizontal rod 201a-1, the vertical rod 201
The bottom of the vertical rod 201a-4 is fixed to the dial by a bolt, and the dial 201a further includes a moving rod 201a-5 and a second horizontal rod 201a.
a-6, a gear 201a-7, a rack 201a-8, a support 201a-9, two sets of moving rods 201a-5 are provided, and the bottom of the moving rods 201a-5 is respectively a second horizontal rod 2
The moving rod 201a-5 side fixed to both sides of 01a-6 is fitted into the slide groove of the vertical rod 201a-4, the bottom of the set spring 201a-3 is fixed to the top of the second horizontal rod 201a-6, The rack 201a-8 is fixed to the top of the second horizontal rod 201a-6, the fixed rod 201a-2 is provided with a moving groove, the gear 201a-7 is provided in the moving groove, and the gear 201a-7 is connected to the rack 201a- 8 and the top of the post 201a-9 is fixed to the bottom of the second transverse rod 201a-6. The detector 201 further includes a pointer 201c, a dial 201d, and a screw 201e, the dial 201d fixedly connected to the screw 201e, the pointer 201c rotationally connected to the screw 201e, and the screw 201e fixed to the bottom of the vertical rod 201a-4. , the screw 201e is fixed to the dial 201a through a gear 201a-7, and the detection unit 200 further comprises a protective dial 203 and a magnet 20
4, a protective dial 203 is fixed to the outside of the indicator 201, and a magnet 204 is fixed to the bottom of the support rod 201a-9.
When used, the bottom of the instruction table 202 is embedded in the groove of the hollow sleeve 202, and the oxide film component in the pipe is mainly composed of ferrous oxide, ferric tetroxide and ferric trioxide. The content of the oxide film is determined through a simple formula of 1/6=1/2X, where X is the oxide film and the oxide film X is 1
/3, the magnet 204 begins to attract the oxide film, gradually increasing the weight of the magnet 204, the weight of the magnet 204 attracting the oxide film is transmitted to the support 201a-9, and the support 201a-
9 is transmitted to the second horizontal rod 201a-6, at this time the spring 2 on the second horizontal rod 201a-6.
01a-3 is gradually extended, the second horizontal rod 201a-6 moves down the rack 201a-7, the moving rod 201a-5 slides in the chute of the vertical rod 201a-4, and the gear 201
Since a-6 and rack 201a-7 mesh with each other to move gear 201a-6, drive needle 201c begins to shift at this time, and the needle direction is leftmost when magnet 204 does not attract oxidized leather at first. , when the weight of the magnet 204 begins to increase, the pointer 201c begins to shift to the right, and the worker can timely determine the accumulation of oxide film in the pipe based on the shift state of the pointer on the instruction table 302. Furthermore, the piping can be removed and replaced, and the piping can be prevented from bursting due to a large amount of oxide film buildup.

Example 3
4-5, the third embodiment of the present utility model, which is different from the previous embodiment, is that this embodiment provides an oxide leather detection structure, and the oxide leather removal of the prior art is Mainly cut and weld the oxidized leather piled pipe to solve the effects of reducing the welding cost and increasing the service life of the pipe, which includes the detection module 300 .
Specifically, the connection unit 300 includes connectors 301 attached to both ends of the connection pipe 102 .
, a seal ring 302 fitted in the connector 301 , and the connector 301 includes a first flange 301 a and a second flange 301 b , the first flange 301 a being the connector tube 102
The second flange 301b is attached to one end of the conveying pipe 101, the first flange 301a and the second flange 301b are fixed by a nut, and the first flange 3
01a has a first annular seal groove 301a-1 on the inner four circumferences of the second flange 301b, and a second annular seal groove 301b-1 on the inner four circumferences of the second flange 301b. This is because it is likely to exist at the connection point, and a small amount of water vapor in the transport pipe 101 permeates.
In order to further achieve the effect of sealing, an annular seal groove is installed and a matching seal ring 302 is embedded in the annular seal groove. The seal ring 302 has a first annular seal groove 301
a-1 and a second spring 302c provided between the connection area between the housing 302b and the baffle 302a whose both ends are fitted in the second annular seal groove 301b-1, and the other end of the housing 302b is connected to the baffle 302a. A first spring 302c provided between connection areas with the first spring 302c, and a second spring 30 having the other end of the housing 302b connected to the baffle 302a.
2c, and the baffle 302a and the housing 302b are both made of silica gel,
The material of silica gel can also be used to achieve the effect of sealing, so that when the pipe transports steam or water vapor, it can be prevented from leaking from the connection point of the flange. The baffle 302a is installed inside two sets of housings 302b, the first spring 302c is installed in the connection section between the baffle 302a and the housing 302b, one end of the second spring 302c connects the baffle 302a to the other end of the housing 302b, The action of the second spring 302c is mainly that the housing 302b is between the first annular seal groove 301a-1 and the second annular seal groove 301a-1.
After each fitting into the annular seal groove 301b-1, the first flange 301a and the second flange 30
1b is fixed by a nut, at this time the second spring 302c is in a compressed state, the connection section between the baffle 302a and the housing 302b is minimal at this time, and when the connection tube 102 needs to be replaced, a set of When the housing 302b is separated from the annular seal groove, the second spring 302c releases its elastic force, and the connection section of the housing 302b and the baffle 302a recovers to said uncompressed space, and the protruding portion of the seal ring 302 is released. In addition to making it convenient to take out the member, increasing the sealing ring 302 also achieves a better sealing effect.
In use, when the boiler is in operation, the connector 301 is attached to both ends of the connector tube 102 in order to facilitate the later removal of the pipeline. Explosion tubes are likely to occur if they are not organized. In that case, general thermal power plants can cut and weld pipelines with deposited oxide film, which increases welding costs and shortens the service life of pipelines. In addition to the decrease in water vapor, when the water vapor is transported through the transport pipe 101, when the operation time reaches a certain time, the oxide film in the pipe increases, and the nut fixing the first flange 301a and the second flange 301b is removed. It eliminates the need to remove, remove the pipe connected with the seal ring 302 on the flange, replace the pipe, and weld a new pipe, reducing the welding cost, and adding the connection unit 300 to the connection pipe 102, Removal of the pipe can be facilitated and the operator can remove the pipe on the connecting pipe 102 without the need for a tedious program in which the pipe must be cut and re-welded if too much oxide film builds up in the pipe. The replacement of the pipe can be realized only by removing the connection unit 300.
Importantly, it should be noted that the configurations and configurations of the present application shown in different exemplary embodiments are exemplary only. Although only a few embodiments are described in detail in this disclosure, those who read this disclosure will appreciate many variations without departing substantially from the novel teachings and advantages of the subject matter described herein. is possible, e.g. the sizes of the various elements,
oxide film, structure, shape and ratio, and parameter values such as temperature, pressure, etc., mounting arrangement,
Changes in material use, color, orientation, etc. For example, an element illustrated as unitary may be composed of multiple parts or elements, the positions of the elements may be reversed or otherwise altered,
The nature or number or position of individual elements can be altered or altered. Accordingly, all such variations are intended to be included within the scope of this utility model. The order or order of any process or method steps may be changed or reordered according to alternative embodiments. In a claim, the "appliance plus function" clause is intended to supersede any structure that performs said function described herein, and is not only structurally equivalent, but is also structurally equivalent. be. Other substitutions, variations, modifications and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of this utility model. Therefore, the invention is not limited to a particular embodiment, but extends to various modifications that fall within the scope of the appended claims.
Furthermore, in order to provide a concise description of the exemplary embodiments, all features of the actual embodiments, i.e., features not related to the best mode for carrying out the invention presently considered,
Alternatively, features not related to the implementation of the invention may not be described.
It should be understood that many specific embodiment decisions may be made during any engineering or design project or during the development of any actual embodiment. Such a development effort can be complex and time consuming, but thanks to this disclosure it should not require much experimentation for the average engineer and said development effort should be a normal process of design, manufacture and production. It's going to be work.
It should be noted that although the above embodiments describe the invention in detail with reference to preferred embodiments without departing from the spirit and scope of the invention, those skilled in the art will appreciate that other modifications may be made without departing from the spirit and scope of the invention. ,
It should be understood that the technical scope of the present invention can be modified or equivalently replaced, and both should be included in the claims of the utility model.

Claims (10)

a transport unit 100;
The transport unit 100 is
including a conveying pipe 101 and a connecting pipe 102,
One end of the conveying pipe 101 is connected to a connecting pipe 102,
The other end of the transport pipe 101 is connected to a boiler,
a detection component 200;
The detection component 200 includes:
a detector 201;
a hollow sleeve 202;
The bottom of the hollow sleeve 202 is connected to the connecting tube 102,
The detector 201 is placed on top of a hollow sleeve 202,
The detection structure of the oxide film, including. The structure for detecting an oxide film according to claim 1,
The connection pipe 102 includes a connection hole 102a and a screw hole 102b,
The connection holes 102a are provided at both ends of the connection pipe 102,
The connection hole 102a is connected to the carrier pipe 101,
The screw hole 102b is opened at the top of the connecting pipe 102,
The detector 201 is connected to the screw hole 102b,
Oxide film detection structure. The structure for detecting an oxide film according to claim 2,
The detector 201 is
including a dial 201a and a fixed post 201b,
The dial 201a is fixed to the top of the fixed post 201b,
opening the screw thread at the bottom of the fixed column 201b,
The bottom of the fixed column 201b is screwed to the top of the hollow sleeve 202,
Oxide film detection structure. An oxide film detection structure according to claim 3,
The dial 201a is
a first horizontal rod 201a-1;
a fixed rod 201a-2;
a spring 201a-3;
a vertical rod 201a-4, and
The first horizontal rod 201a-1 is fixed to the inner wall of the dial 201a,
The top of the fixed rod 201a-2 is fixed to the middle of the first horizontal rod 201a-1,
Two sets of the springs 201a-3 are provided,
The tops of the two sets of springs 201a-3 are respectively fixed to the first horizontal rods 201a-1,
Two sets of the vertical rods 201a-4 are installed,
The tops of the two sets of vertical rods 201a-4 are respectively fixed to both sides of the first horizontal rod 201a-1,
A chute is provided inside the vertical rod 201a-4,
The bottom of the vertical rod 201a-4 is fixed to the dial by a bolt,
Oxide film detection structure. An oxide film detection structure according to claim 4,
The dial 201a is
a moving rod 201a-5;
a second horizontal rod 201a-6;
a gear 201a-7;
a rack 201a-8;
struts 201a-9;
Two pairs of the moving rods 201a-5 are provided,
the bottom of the moving rod 201a-5 is fixed to both sides of the second horizontal rod 201a-6,
is fitted into the chute of the vertical rod 201a-4 on the moving rod 201a-5 side,
The bottoms of the group springs 201a-3 are fixed to the tops of the second horizontal rods 201a-6, respectively,
said rack 201a-8 is fixed to the top of the second horizontal rod 201a-6,
A moving groove is formed in the fixed rod 201a-2,
The gear 201a-7 is provided in a moving groove,
Aligning the teeth of the gear 201a-7 and the rack 201a-8,
the top of said strut 201a-9 is fixed to the bottom of the second transverse rod 201a-6;
Oxide film detection structure. An oxide film detection structure according to claim 4,
The detector 201 is
a pointer 201c;
a dial 201d;
a screw 201e;
The dial 201d and the screw 201e are fixedly connected,
The pointer 201c is rotatably connected to the screw 201e,
The screw 201e is fixed to the bottom of the vertical rod 201a-4,
The screw 201e is fixed to the dial 201a through a gear 201a-7,
Oxide film detection structure. An oxide film detection structure according to claim 6,
The detection component 200 includes:
including a protection plate 203 and a magnet 204,
The protection plate 203 is fixed outside the detector 201,
The magnet 204 is fixed to the bottom of the post 201a-9,
Oxide film detection structure. an oxide film detection structure according to any one of claims 1 to 7;
a connection component 300;
The connection component 300 includes:
a connector 301;
a sealing ring 302;
The connectors 301 are attached to both ends of the connection pipe 102,
The seal ring 302 is fitted in the connector 301,
boiler piping. The device for detecting an oxide film according to claim 8,
The connector 301 is
including a first flange 301a and a second flange 301b,
The first flange 301a is attached to one end of the connecting pipe 102,
The second flange 301b is attached to one end of the carrier pipe 101,
The first flange 301a and the second flange 301b are fixed by nuts,
A first annular seal groove 301a-1 is formed inside the first flange 301a,
A second annular seal groove 301b-1 is formed inside the second flange 301b,
Oxide film detector. An oxide film detection device according to claim 8,
The seal ring 302 is
including a baffle plate 302a, a housing 302b and a second spring 302c;
At both ends of the seal ring 302, a first annular seal groove 301a-1 and a second annular seal groove 301a-1 are provided.
01b-1 are fitted respectively,
The baffle 302a is provided inside the housing 302b,
The second spring 302c is provided in the connecting section between the baffle plate 302a and the housing 302b,
The first spring 302c has one end connected to the housing 302b and the other end connected to the baffle 302.
connected to a
Oxide film detector.