CN219781304U - Shellfish catcher - Google Patents

Abstract

The utility model discloses a shellfish catcher, which comprises a shell, a conical filter screen, a mounting shaft and at least one cleaning mechanism, wherein the conical filter screen is arranged on the shell; the cleaning mechanism comprises a guide rail and a flushing assembly movably arranged on the guide rail and connected with a high-pressure medium source, the flushing assembly comprises a flushing pipeline, and a plurality of spray heads are arranged on the flushing pipeline. The cleaning mechanism can utilize high-pressure medium such as high-pressure water flow to impact to solve mesh blocking impurities of the conical filter screen, and take away the washed impurities such as sand, shells and the like, so that the cleaning mechanism is higher in efficiency and higher in safety compared with manual cleaning.

Description

Shellfish catcher

Technical Field

The utility model relates to the technical field of nuclear power, in particular to a shellfish catcher.

Background

The nuclear power station SEC system is used as a main cold source for heat exchange of the nuclear island, the shellfish catcher is an important component of the nuclear power station SEC system, and the shellfish catcher is arranged in a nuclear fuel plant and is mainly used for on-line filtering and cleaning equipment, trapping aquatic shellfish organisms and other sundries in water in the cold source, avoiding damage to subsequent equipment caused by shellfish attached to the subsequent equipment, and ensuring normal operation of equipment such as a heat exchanger.

The traditional maintenance method for cleaning the shellfish catcher filter screen of the SEC system of the current nuclear power plant uses manpower to clean the filter screen, namely, maintenance personnel need to enter the lower part of the filter screen through a maintenance hole, a highlight light source is fixed on the opposite side of the filter screen, and after the hard tool is used for dredging manually, whether the uniformity inspection after light passes is left or not. Because the number of the blocked holes is up to 2000-3000, a great deal of time and labor are consumed for dredging, the height of the vertical pipeline below the vertical pipeline is more than 10 meters, the falling safety risk is high, the working efficiency is low, the cleaning difficulty is high, and the construction period is long.

Disclosure of Invention

The utility model aims to solve the technical problem of providing an improved shellfish catcher.

The technical scheme adopted for solving the technical problems is as follows: constructing a shellfish catcher, comprising a shell, a conical filter screen, a mounting shaft and at least one cleaning mechanism; the shell comprises a first shell and a second shell, a water inlet is formed in the first shell, and a water outlet is formed in the second shell;

the conical filter screen is arranged in the shell and is positioned between the first shell and the second shell, the opening side of the conical filter screen is arranged towards one side of the water inlet, the conical filter screen limits the inner cavity of the shell into a first space and a second space, the first space is communicated with the water inlet, and the second space is communicated with the water outlet; the installation shaft penetrates through the center of the conical filter screen, one end of the installation shaft is connected with the first shell, and a gap is reserved between the other end of the installation shaft and the inner wall surface of the second shell;

the cleaning mechanism is arranged in the second space and comprises a guide rail and a flushing assembly movably arranged on the guide rail and connected with a high-pressure medium source, the flushing assembly comprises a flushing pipeline, and a plurality of spray heads are arranged on the flushing pipeline.

In some embodiments, the cleaning mechanism further comprises a spray assembly movably mounted on the rail and connected to the flush conduit or to a high pressure medium source;

the spray washing assembly comprises a first connecting piece, a second connecting piece, a first connecting pipe, a second connecting pipe, a third connecting pipe and a spray head, wherein the first connecting piece is provided with a first interface and a second interface, and the second connecting piece is provided with a third interface and a fourth interface;

the first interface is connected with one end of the first connecting pipe to input high-pressure medium, the second interface is connected with one end of the second connecting pipe, the third interface is connected with the other end of the second connecting pipe, the fourth interface is connected with one end of the third connecting pipe, and the other end of the third connecting pipe is connected with the spray head;

the pipe diameter of the first connecting pipe is larger than that of the second connecting pipe, and the pipe diameter of the second connecting pipe is larger than that of the third connecting pipe.

In some embodiments, the second connector includes a first mounting portion and a second mounting portion connected to the first mounting portion; one end of the second connecting pipe is connected with one end of the first mounting part far away from the second mounting part;

one end of the third connecting pipe is connected with the second installation part.

In some embodiments, the third connecting tube comprises a tube body, and an annular protruding part is arranged on the periphery of the tube body;

the protruding portion is located the inner chamber setting of second installation department, just the axial both sides of protruding portion are equipped with first bearing and second bearing respectively, first bearing is kept away from first installation department one side sets up.

In some embodiments, the second mounting portion is a cylindrical structure including a bottom wall and a peripheral wall extending from the bottom wall;

the bottom wall is provided with a through hole for one end of the third connecting pipe to extend out, a sealing ring is arranged between the first bearing and the bottom wall, and the sealing ring is sleeved on the periphery of one section of the pipe body.

In some embodiments, the first mounting portion is threadably coupled to the second mounting portion.

In some embodiments, the spray head comprises a main body, wherein the main body is provided with a water outlet cavity, and a plurality of spray holes communicated with the water outlet cavity are formed in the main body.

In some embodiments, the cleaning mechanism includes a moving member and a driving member;

the spray washing assembly is installed on the guide rail through a moving part, and the driving part is connected with the moving part to drive the spray washing assembly to move.

In some embodiments, the moving member comprises a slip ring or a slip block;

the driving member includes an underwater servo motor.

In some embodiments, one end of the guide rail is mounted on the mounting shaft, and the other end of the guide rail is suspended.

The implementation of the utility model has the following beneficial effects: the shellfish catcher is provided with a cleaning mechanism, and the cleaning mechanism can utilize high-pressure medium such as high-pressure water flow to impact to solve the problem of mesh blockage of the conical filter screen and take away the washed impurities such as sand, stones, shells and the like.

Drawings

In order to more clearly illustrate the technical solution of the present utility model, the following description will be given with reference to the accompanying drawings and examples, it being understood that the following drawings only illustrate some examples of the present utility model and should not be construed as limiting the scope, and that other related drawings can be obtained from these drawings by those skilled in the art without the inventive effort. In the accompanying drawings:

FIG. 1 is a schematic diagram of the construction of a shellfish catcher in some embodiments of the utility model;

fig. 2 is a cross-sectional view of a shellfish catcher in some embodiments of the utility model;

FIG. 3 is a cross-sectional view of a shellfish catcher in other embodiments of the utility model;

FIG. 4 is a schematic view of a portion of a shellfish catcher in other embodiments of the utility model;

FIG. 5 is a schematic illustration of the structure of a spray assembly in some embodiments of the utility model;

FIG. 6 is an exploded view of a spray assembly in some embodiments of the utility model;

FIG. 7 is a cross-sectional view of a spray assembly in some embodiments of the utility model;

fig. 8 is a detail view of fig. 7.

Detailed Description

For a clearer understanding of technical features, objects and effects of the present utility model, a detailed description of embodiments of the present utility model will be made with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "rear", "upper", "lower", "left", "right", "longitudinal", "transverse", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail", etc. are configured and operated in specific directions based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model, and do not indicate that the apparatus or element to be referred to must have specific directions, and thus should not be construed as limiting the present utility model.

It should also be noted that unless explicitly stated or limited otherwise, terms such as "mounted," "connected," "secured," "disposed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. When an element is referred to as being "on" or "under" another element, it can be "directly" or "indirectly" on the other element or one or more intervening elements may also be present. The terms "first," "second," "third," and the like are used merely for convenience in describing the present utility model and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby features defining "first," "second," "third," etc. may explicitly or implicitly include one or more such features. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the following description, for purposes of explanation and not limitation, specific details are set forth such as the particular system architecture, techniques, etc., in order to provide a thorough understanding of the embodiments of the present utility model. It will be apparent, however, to one skilled in the art that the present utility model may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present utility model with unnecessary detail.

Referring to fig. 1 to 8, the present utility model shows a shellfish trap comprising a housing 10, a conical screen 20, a mounting shaft 30 and at least one cleaning mechanism 40; the shell 10 comprises a first shell 11 and a second shell 12, wherein the first shell 11 is provided with a water inlet 111, and the second shell 12 is provided with a water outlet 121;

the conical filter screen 20 is installed in the shell 10 and is positioned between the first shell 11 and the second shell 12, the opening side of the conical filter screen 20 is arranged towards one side of the water inlet 111, the conical filter screen 20 defines a first space A and a second space B in the inner cavity of the shell 10, the first space A is communicated with the water inlet 111, and the second space B is communicated with the water outlet 121; the installation shaft 30 penetrates through the center of the conical filter screen 20, one end of the installation shaft 30 is connected with the first shell 11, and a gap is reserved between the other end of the installation shaft 30 and the inner wall surface of the second shell 12;

the cleaning mechanism 40 is disposed in the second space B, the cleaning mechanism 40 includes a guide rail 41 and a flushing assembly 42 movably mounted on the guide rail 41 and connected to a high pressure medium source, the flushing assembly 42 includes a flushing pipe 421, and a plurality of spray heads 422 are disposed on the flushing pipe 421. The high pressure medium source may be a high pressure water source, and one end of the flushing pipe 421 may be connected to the high pressure water source through a water pipe, so as to access the high pressure water, and the high pressure water is sprayed from the spray head 422 to flush impurities such as shellfish on the conical filter screen 20.

Preferably, the flushing pipe 421 is movably mounted on the guide rail 41 through at least one support 423, and a rotating mechanism such as a rotating cradle head can be further arranged on the support 423, so that the flushing pipe 421 can be rotated, and the flushing pipe 421 can be driven to swing left and right by about 30 degrees, so that the flushing area is increased, and the flushing is more comprehensive and efficient.

Preferably, the support 423 may be movably mounted on the guide rail 41 by a sliding structure such as a slider or a slip ring, and the cleaning mechanism 40 may further include a driving mechanism such as a submerged servo-driven motor connected to the support 423 to drive the flushing assembly 42 to move along the guide rail 41.

Referring to fig. 5 to 8, further, the cleaning mechanism 40 further includes a spray assembly 43 movably mounted on the guide rail 41 and connected to the flushing pipe 421 or to a high pressure medium source; the spray washing assembly 43 includes a first connection member 431, a second connection member 432, a first connection tube 433, a second connection tube 434, a third connection tube 435, and a spray head 436, wherein the first connection member 431 has a first interface 431a and a second interface 431b, and the second connection member 432 has a third interface 432a and a fourth interface 432b;

the first connection port 431a is connected with one end of the first connection pipe 433 to input a high pressure medium, the second connection port 431b is connected with one end of the second connection pipe 434, the third connection port 432a is connected with the other end of the second connection pipe 434, the fourth connection port 432b is connected with one end of the third connection pipe 435, and the other end of the third connection pipe 435 is connected with the spray head 436;

the pipe diameter of the first connection pipe 433 is larger than that of the second connection pipe 434, the pipe diameter of the second connection pipe 434 is larger than that of the third connection pipe 435, one end of the first connection pipe 433 far away from the first connection pipe 431 can be connected with a high-pressure medium source such as a high-pressure water source so as to input a high-pressure medium such as high-pressure water flow into the spray washing assembly 43, the pipe diameters of the first connection pipe 433, the second connection pipe 435 and the third connection pipe 435 are gradually decreased, the high-pressure medium can be gradually pressurized in the flowing process, and the high-pressure water flow can be sprayed out to the spray nozzle 436 so as to higher clean the conical filter screen 20.

It will be appreciated that the shellfish catcher is provided with a cleaning mechanism 40, and the cleaning mechanism 40 can utilize high-pressure medium such as high-pressure water flow to impact to solve the problem that the meshes of the conical filter screen 20 are blocked, and take away the washed sand, shell and other impurities, so that the efficiency and the safety are higher compared with manual cleaning.

Preferably, the second connection piece 432 includes a first mounting portion 4321 and a second mounting portion 4322 connected to the first mounting portion 4321; one end of the second connection pipe 434 is connected to one end of the first mounting portion 4321 remote from the second mounting portion 4322;

one end of the third connection pipe 435 is connected to the second mounting part 4322.

Preferably, the third connection pipe 435 includes a pipe body 4351, and an annular protrusion 4352 is provided at the outer circumference of the pipe body 4351;

the protruding portion 4352 is disposed in an inner cavity of the second mounting portion 4322, and a first bearing 437 and a second bearing 438 are disposed on two axial sides of the protruding portion 4352, respectively, and the first bearing 437 is disposed at a side away from the first mounting portion 4321.

Referring to fig. 7, further, the second mounting portion 4322 has a cylindrical structure, and includes a bottom wall 43221 and a peripheral wall 43222 extending from the bottom wall 43221;

the bottom wall 43221 is provided with a through hole for extending one end of the third connecting pipe 435, a sealing ring 439 is arranged between the first bearing 437 and the bottom wall 43221, and the sealing ring 439 is sleeved on the outer periphery of one section of the pipe body 4351.

Preferably, the first mounting portion 4321 is threadably coupled to the second mounting portion 4322. In other embodiments, the second mounting portion 4322 may be a bearing block.

It can be appreciated that the third connecting tube 435 is rotatably connected to the second connecting member 432, and the third connecting tube 435 can be pushed to rotate or the second mounting portion 4322 can be pushed to rotate relative to the first mounting portion 4321 during the high-pressure water flow process, so that the spray nozzle 436 can rotate circumferentially to form a larger flushing range during the impurity cleaning process.

Preferably, the nozzle 436 is substantially hemispherical, the nozzle 436 includes a main body 4361, the main body 4361 has a water outlet chamber C, and a plurality of nozzles 4362 communicating with the water outlet chamber C are disposed on the main body 4361. The body 4361 may be screw-coupled or directly fixedly coupled to the lower end of the third connection tube 435.

Preferably, the cleaning mechanism 40 includes a moving member and a driving member; the spray assembly 43 is mounted on the guide rail 41 by a moving member, and the driving member is connected to the moving member to drive the spray assembly 43 to move.

The moving piece comprises a sliding ring or a sliding block; the drive member includes an underwater servo motor. The cleaning mechanism 40 may be further configured with a transmission mechanism, such as a screw transmission mechanism, and of course, the moving member and the driving member may be selectively arranged according to actual requirements, which is not particularly limited herein.

Preferably, one end of the guide rail 41 is mounted on the mounting shaft 30, and the other end of the guide rail 41 is suspended so that the guide rail 41 can rotate along with the mounting shaft 30.

Preferably, the cleaning mechanism 40 may be configured in one or more, such as three, circumferentially spaced apart configurations to provide a more thorough cleaning of the conical screen 20. Of course, the number of settings and the positions of settings of the cleaning mechanism 40 may be selected according to actual needs, and are not particularly limited herein.

Preferably, the components of the cleaning mechanism 40 are made of a material with high corrosion resistance, such as stainless steel.

Referring to fig. 3, in some embodiments, the shellfish catcher further includes an interceptor 50 removably mounted in the water inlet 111 or the first space a to intercept shellfish collected by the washing mechanism 40. The interceptor member 50 is typically used to pause the heat sink from cleaning the conical screen 20, and may be an air bag.

The cleaning mechanism 40 washes out the dropped impurities such as shellfish or the like, or falls onto an air bag, and then pumps the impurities away from the shellfish catcher by a pumping device, avoiding the influence of the impurities on other pipelines and devices.

It can be understood that the first housing 11 and the second housing 12 are fixedly connected to form a spherical cavity, and when in operation, seawater enters from the water inlet 111 of the first housing 11, flows through the conical filter screen 20, is filtered by the conical filter screen 203, enters the second housing 12, and enters into the heat exchanger or other equipment from the water outlet 121 of the second housing 12 for heat exchange.

In some embodiments, the housing 10 may further be provided with a manhole 13 for operators to access the housing 10 for maintenance and cleaning operations.

It is to be understood that the above examples only represent preferred embodiments of the present utility model, which are described in more detail and are not to be construed as limiting the scope of the utility model; it should be noted that, for a person skilled in the art, the above technical features can be freely combined, and several variations and modifications can be made without departing from the scope of the utility model; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims (10)

1. A shellfish catcher, characterized by comprising a housing (10), a conical filter screen (20), a mounting shaft (30) and at least one cleaning mechanism (40); the shell (10) comprises a first shell (11) and a second shell (12), a water inlet (111) is formed in the first shell (11), and a water outlet (121) is formed in the second shell (12);

the conical filter screen (20) is arranged in the shell (10) and is positioned between the first shell (11) and the second shell (12), the opening side of the conical filter screen (20) is arranged towards one side of the water inlet (111), the conical filter screen (20) defines a first space (A) and a second space (B) from the inner cavity of the shell (10), the first space (A) is communicated with the water inlet (111), and the second space (B) is communicated with the water outlet (121); the installation shaft (30) penetrates through the center of the conical filter screen (20), one end of the installation shaft (30) is connected with the first shell (11), and a gap is reserved between the other end of the installation shaft (30) and the inner wall surface of the second shell (12);

the cleaning mechanism (40) is arranged in the second space (B), the cleaning mechanism (40) comprises a guide rail (41) and a flushing assembly (42) movably arranged on the guide rail (41) and connected with a high-pressure medium source, the flushing assembly (42) comprises a flushing pipeline (421), and a plurality of spray heads (422) are arranged on the flushing pipeline (421).

2. Shellfish catcher according to claim 1, characterized in that the washing mechanism (40) further comprises a spray assembly (43) movably mounted on the guide rail (41) and connected to the flushing pipe (421) or to a high pressure medium source;

the spray washing assembly (43) comprises a first connecting piece (431), a second connecting piece (432), a first connecting pipe (433), a second connecting pipe (434), a third connecting pipe (435) and a spray head (436), wherein the first connecting piece (431) is provided with a first interface (431 a) and a second interface (431 b), and the second connecting piece (432) is provided with a third interface (432 a) and a fourth interface (432 b);

the first interface (431 a) is connected with one end of the first connecting pipe (433) to input high-pressure medium, the second interface (431 b) is connected with one end of the second connecting pipe (434), the third interface (432 a) is connected with the other end of the second connecting pipe (434), the fourth interface (432 b) is connected with one end of the third connecting pipe (435), and the other end of the third connecting pipe (435) is connected with the spray head (436);

the pipe diameter of the first connecting pipe (433) is larger than that of the second connecting pipe (434), and the pipe diameter of the second connecting pipe (434) is larger than that of the third connecting pipe (435).

3. The shellfish trap according to claim 2, wherein the second connection (432) comprises a first mounting portion (4321) and a second mounting portion (4322) connected to the first mounting portion (4321); one end of the second connecting pipe (434) is connected with one end of the first mounting part (4321) far away from the second mounting part (4322);

one end of the third connecting pipe (435) is connected to the second mounting part (4322).

4. A shellfish trap according to claim 3, characterized in that the third connecting tube (435) comprises a tube body (4351), the outer circumference of the tube body (4351) being provided with an annular protrusion (4352);

the protruding portion (4352) is located the inner chamber setting of second installation department (4322), just the axial both sides of protruding portion (4352) are equipped with first bearing (437) and second bearing (438) respectively, first bearing (437) are kept away from first installation department (4321) one side sets up.

5. The shellfish catcher according to claim 4, characterized in that the second mounting portion (4322) has a cylindrical structure comprising a bottom wall (43221) and a peripheral wall (43222) extending from the bottom wall (43221);

the bottom wall (43221) is provided with a through hole, one end of the third connecting pipe (435) extends out, a sealing ring (439) is arranged between the first bearing (437) and the bottom wall (43221), and the sealing ring (439) is sleeved on the periphery of one section of the pipe body (4351).

6. Shellfish catcher according to claim 4, characterized in that the first mounting portion (4321) is screwed with the second mounting portion (4322).

7. The shellfish catcher according to claim 5, characterized in that the spray head (436) comprises a main body (4361), the main body (4361) is provided with a water outlet cavity (C), and a plurality of spray holes (4362) communicated with the water outlet cavity (C) are arranged on the main body (4361).

8. Shellfish catcher according to any of claims 2 to 7, characterized in that the cleaning mechanism (40) comprises a moving member and a driving member;

the spray washing assembly (43) is arranged on the guide rail (41) through a moving part, and the driving part is connected with the moving part to drive the spray washing assembly (43) to move.

9. The shellfish catcher according to claim 8, characterized in that the moving member comprises a sliding ring or a sliding block;

the driving member includes an underwater servo motor.

10. Shellfish catcher according to any of claims 1 to 6, characterized in that one end of the guide rail (41) is mounted on the mounting shaft (30), and the other end of the guide rail (41) is suspended.