CN218409021U - Expansion tank - Google Patents

Abstract

The utility model relates to a water system field especially relates to an expansion tank. The expansion tank comprises a tank body and a bag body arranged in the inner cavity of the tank body; the bag body is connected with a first medium pipe joint communicated with the interior of the bag body, and a second medium pipe joint communicated with the inner cavity of the tank body is constructed on the side wall of the tank body; the method is characterized in that: the inner end part of the first medium pipe joint is hermetically and integrally connected with the capsule body, the outer end part of the first medium pipe joint extends out of the tank body, and the first medium pipe joint is fixed on the tank body. The scheme can ensure that the sealing performance of the first medium pipe joint and the capsule is better.

Description

Expansion tank

Technical Field

The utility model relates to a water system field especially relates to an expansion tank.

Background

The expansion tank is used in a closed water circulation system, plays a role in balancing water quantity and pressure, and avoids frequent opening of a safety valve and frequent water replenishing of an automatic water replenishing valve. But at present the expansion tank that a hot-water heating system used who records in the chinese utility model patent text of present current expansion tank reference publication number "CN211119600U" belongs to heating equipment technical field, including a jar body, the inner chamber of jar body is provided with the trompil baffle, and the trompil baffle separates the inner chamber of the jar body for upper and lower two parts, and upper portion is the gasbag cavity, and the lower part is the stock solution cavity, sets up the liquid permeability hole of equipartition on the trompil baffle, and the gasbag cavity communicates through liquid permeability hole each other with the stock solution cavity, is equipped with inflatable airbag in the gasbag cavity.

In the above patent scheme, the tank body is provided with an upper end enclosure covered on the air bag chamber, the air inlet of the inflatable air bag is connected with the connecting part of the upper end enclosure and the tank body, and the upper end enclosure is provided with an air valve which is communicated with the upper part of the inflatable air bag. However, in the scheme, the air bag is connected to the tank body through the upper end enclosure, the sealing effect is poor, and air leakage is easy to occur.

Disclosure of Invention

In order to solve the problem, the utility model aims to provide an expansion tank, this scheme can ensure that the leakproofness of first medium coupling and utricule is better.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the expansion tank comprises a tank body and an airbag body arranged in an inner cavity of the tank body; the bag body is connected with a first medium pipe joint communicated with the interior of the bag body, and a second medium pipe joint communicated with the inner cavity of the tank body is constructed on the side wall of the tank body; the method is characterized in that: the inner end part of the first medium pipe joint is hermetically and integrally connected with the capsule body, the outer end part of the first medium pipe joint extends out of the tank body, and the first medium pipe joint is fixed on the tank body.

The above technical scheme is adopted in the utility model, this technical scheme relates to an expansion tank, this expansion tank is including a jar body to and set up in the utricule of a jar internal chamber, first medium and second medium are filled respectively to the utricule inside and a jar internal chamber, gas is generally chooseed for use to first medium, the second medium generally selects water or the mixed solution of water and ethylene glycol, the second medium is used for connecting closed water circulating system, the effect of balanced water yield and pressure has been played, avoid the relief valve frequently to open and frequent moisturizing of automatic water supply valve.

Compared with the prior art, the innovation point of the scheme is as follows: the inner end part of the first medium pipe joint is hermetically and integrally connected with the capsule body, and then the outer end part of the first medium pipe joint extends out of the tank body and is fixed; therefore, the better sealing performance of the first medium pipe joint and the capsule body can be ensured.

In a further scheme, the inner end part of the first medium pipe joint penetrates through a bag opening of the bag body to enter the bag body, an inner bulge is circumferentially arranged on the inner wall of the bag body along the edge of the bag opening, and an inner ring body is constructed on the inner end part of the first medium pipe joint; the inner ring body on the first medium pipe joint is integrally connected with the inner wall of the bag body and the inner wall of the bag opening, and the inner bulge of the bag body is coated in the inner bulge. By adopting the technical scheme, the area of the integral connection is increased, and the connecting surface similar to a labyrinth shape is constructed due to the roundabout arrangement of the matching surfaces of the inner bulge and the inner ring body. Thus, the sealing property is ensured.

In the specific scheme, the inner end part of the first medium pipe joint is embedded in the bag body at the bag opening and is vulcanized with the bag body into a whole. The integral connection structure of the first medium pipe joint and the capsule body is integrally vulcanized after the inner ring body is coated with the inner bulge, and the sealing performance is guaranteed.

Preferably, the outer end part of the first medium pipe joint extends out of the tank body from the through hole on the tank body and is screwed and fixed by a nut.

In a further scheme, an outer bulge is arranged on the outer wall of the capsule body along the circumferential direction of the edge of the capsule opening, and the axial direction of the outer bulge corresponds to the radial range of the inner ring body. When the scheme is adopted for connection, in the process of screwing the nut, the first medium pipe joint is subjected to axially outward screwing force, the inner ring body extrudes outwards and presses the outer bulge against the inner wall of the tank body at the edge of the through hole, the edge of the through hole is sealed, and the second medium in the inner cavity of the tank body is prevented from leaking from the through hole.

Preferably, the outer protrusion has at least one continuous convex ring closed end to end, and the outer end surface of the cross section of the convex ring is formed into an arc shape or a conical shape with gradually increasing area from the outside to the inside. Here, the outer protrusion may be provided with one convex ring as shown in the drawing, or a plurality of convex rings of one turn and one turn may be used. The outer end face of the cross section of the convex ring is constructed into an arc shape or a conical shape with gradually increased area from outside to inside, so that certain deformation can be generated when the convex ring is in contact with the inner wall of the tank body for extrusion, the convex ring is tightly attached to the inner wall of the tank body, and the sealing performance is better.

In one scheme, the second medium pipe joint is integrally constructed on the side wall of the tank body, the tank body is constructed by welding and sealing an upper shell and a lower shell which are oppositely arranged, and in order to arrange the capsule into the inner cavity of the tank body, the tank body is required to be divided into the upper shell and the lower shell, and the upper shell and the lower shell are connected in a sealing mode through welding.

Similarly, in another scheme, the second medium pipe joint is integrally constructed on the side wall of the tank body, and the tank body is constructed by oppositely arranged upper and lower shells and sealed by a flange structure and a sealing gasket of the upper and lower shells. In order to install the capsule into the inner cavity of the tank body, the tank body is divided into an upper shell and a lower shell, and the upper shell and the lower shell are connected in a sealing mode through flanges and sealing gaskets.

In the third scheme, a flange opening capable of installing the capsule body into the tank body is formed in the side wall of the tank body, and a flange plate is connected to the flange opening; and a second medium pipe joint is constructed on the flange plate. And a sealing gasket is also arranged between the flange plate and the flange opening of the tank body. The tank body in the scheme is constructed integrally, but the opening diameter of the flange opening constructed on the tank body is relatively large, so that the bag body can be filled into the inner cavity of the tank body, and then the flange opening is sealed through the flange plate and the sealing gasket.

The expansion tank adopting the structure is specifically applied to the following scheme:

in the first scheme, the inner cavity of the tank body is used for filling liquid, and the joint of the second medium pipe is a water joint; the interior of the bag body is filled with gas, and the first medium pipe joint is an inflating nozzle assembly joint.

According to the second scheme, the inner cavity of the tank body is used for filling gas, and the joint of the second medium pipe is a joint of an inflating nozzle assembly; the capsule body is internally filled with liquid, and the first medium pipe joint is a water joint.

Drawings

Figure 1 is a perspective view of an expansion tank in a first configuration.

FIG. 2 is a cross-sectional view of an expansion tank in a first configuration.

Fig. 3 is an enlarged view of a portion a of fig. 2.

FIG. 4 is a perspective view of an expansion tank in a second configuration.

FIG. 5 is a cross-sectional view of an expansion tank in a second configuration.

Fig. 6 is a perspective view of an expansion tank in a third configuration.

FIG. 7 is a cross-sectional view of an expansion tank in a third configuration.

Fig. 8 is a structural sectional view of the capsule.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation of the first and second features not being in direct contact, but being in contact with another feature between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

As shown in fig. 1 to 8, the present embodiment relates to an expansion tank, which comprises a tank body 1 and a bag body 2 arranged in an inner cavity 11 of the tank body. The bag body 2 is connected with a first medium pipe joint 3 communicated with the interior of the bag body, and the side wall of the tank body 1 is provided with a second medium pipe joint 4 communicated with the inner cavity of the tank body. The expansion tank comprises a tank body 1 and an airbag body 2 arranged in an inner cavity 11 of the tank body, wherein a first medium and a second medium are respectively filled in the airbag body 2 and the inner cavity 11 of the tank body, the second medium is used for connecting a closed water circulation system, the effect of balancing water quantity and pressure is achieved, and frequent opening of a safety valve and frequent water replenishing of an automatic water replenishing valve are avoided.

Specifically, the following scheme may be adopted:

in the first scheme, the inner cavity 11 of the tank body is used for filling liquid, and the second medium pipe joint 4 is a water joint. The bag body 2 is filled with gas, and the first medium pipe joint 3 is an inflating nozzle assembly joint.

And in the second scheme, the inner cavity 11 of the tank body is used for filling gas, and the second medium pipe joint 4 is a charging connector assembly joint. The capsule body 2 is filled with liquid, and the first medium pipe joint 3 is a water joint.

In the two schemes, the gas can be air or inert gas, and the liquid can be water or mixed liquid of water and glycol.

Compared with the prior art, the innovation point of the scheme is as follows: the inner end part of the first medium pipe joint 3 is hermetically and integrally connected with the capsule body 2, the outer end part of the first medium pipe joint 3 extends out of the tank body 1, and the first medium pipe joint 3 is fixed on the tank body 1. In this way, a better sealing of the first medium pipe connection 3 with the capsule 2 is ensured.

In the concrete scheme, the inner end part of the first medium pipe joint 3 is embedded in the bag body 2 at the bag opening and is vulcanized with the bag body into a whole. The integral connection structure of the first medium pipe joint 3 and the capsule body 2 is integrally vulcanized after an inner ring body is coated with an inner bulge, and the sealing performance is guaranteed. As further shown in the solutions of fig. 2 and 3, the inner end of the first medium pipe joint 3 passes through the bag opening of the bag body 2 and enters the bag body 2, the inner wall of the bag body 2 is circumferentially provided with an inner bulge 21 along the edge of the bag opening, and an inner ring 31 is built on the inner end of the first medium pipe joint 3. The inner ring 31 of the first medium pipe joint 3 is integrally connected with the inner wall 200 of the capsule body and the inner wall 201 of the capsule mouth, and the inner bulge 21 of the capsule body 2 is covered in the inner bulge. By adopting the technical scheme, the area of the integral connection is increased, and the labyrinth-shaped connection surface is constructed due to the circuitous arrangement of the matching surfaces of the inner bulge 21 and the inner ring 31. Thus, the sealing property is ensured.

As shown in fig. 3, the outer end of the first medium pipe joint 3 extends out of the tank 1 from the through hole in the tank 1 and is fastened and fixed by a nut 6. The outer wall of the capsule body 2 is circumferentially provided with an outer bulge 22 along the edge of the capsule opening, and the axial direction of the outer bulge 22 corresponds to the radial range of the inner ring body 31. When the scheme is adopted for connection, in the process of screwing the nut 6, the first medium pipe joint 3 is subjected to axially outward screwing force, the inner ring body 31 is extruded outwards and presses the outer bulge 22 against the inner wall of the tank body 1 at the edge of the through hole, the edge of the through hole is sealed, and the second medium in the inner cavity 11 of the tank body is prevented from leaking from the through hole.

The outer protrusion 22 here has at least one continuous collar closed end to end, the outer end face of the collar cross-section being configured as an arc or cone with an increasing area from the outside to the inside. Here, the outer protrusion 22 may be provided with one convex ring as shown in the drawing, or a plurality of convex rings of one turn and one turn may be used. The outer end face of the cross section of the convex ring is constructed into an arc shape or a conical shape with gradually increased area from outside to inside, so that certain deformation can be generated when the convex ring is in contact with the inner wall of the tank body 1 for extrusion, the convex ring is tightly attached to the inner wall of the tank body 1, and the sealing performance is better.

In addition, the second medium pipe joint 4 can adopt the following construction modes;

in the first embodiment as shown in fig. 2, the second medium pipe joint 4 is integrally formed on the sidewall of the tank 1, and the tank 1 is formed by welding and sealing an upper shell 101 and a lower shell 102 which are oppositely arranged, and in order to install the capsule 2 into the tank inner cavity 11, the tank 1 is divided into two parts, namely the upper shell 101 and the lower shell 102, and the upper shell and the lower shell are connected by welding and sealing.

In a second embodiment as shown in fig. 5, the second medium pipe joint 4 is integrally formed on the sidewall of the tank body 1, and the tank body 1 is formed by an upper shell 101 and a lower shell 102 which are oppositely arranged and sealed by flange structures and gaskets. In order to install the capsule 2 into the tank cavity 11, the tank 1 needs to be divided into an upper shell 101 and a lower shell 102, and the upper shell and the lower shell are hermetically connected through flanges and gaskets.

In a third embodiment shown in fig. 7, a flange 103 capable of installing the capsule 2 into the tank 1 is provided on the side wall of the tank 1, and a flange 5 is connected to the flange 103. And a second medium pipe joint 4 is constructed on the flange plate 5. A sealing gasket 51 is also arranged between the flange plate 5 and the flange opening 103 of the tank body 1. The tank body 1 in the scheme is constructed integrally, but the caliber of the flange opening 103 constructed on the tank body is relatively large, so that the bag body 2 can be filled into the inner cavity 11 of the tank body, and then the flange opening 103 is sealed by the flange plate 5 and the sealing gasket.

In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the principles and spirit of the present invention.

Claims (10)

1. The expansion tank comprises a tank body (1) and a bag body (2) arranged in an inner cavity (11) of the tank body; a first medium pipe joint (3) communicated with the interior of the bag body (2) is connected to the bag body, and a second medium pipe joint (4) communicated with the inner cavity of the bag body is constructed on the side wall of the tank body (1); the method is characterized in that: the inner end part of the first medium pipe joint (3) is hermetically and integrally connected with the capsule body (2), the outer end part of the first medium pipe joint (3) extends out of the tank body (1), and the first medium pipe joint (3) is fixed on the tank body (1).

2. The expansion tank of claim 1, wherein: the inner end part of the first medium pipe joint (3) penetrates through a bag opening of the bag body (2) to enter the bag body (2), an inner bulge (21) is arranged on the inner wall (200) of the bag body along the peripheral direction of the bag opening, and an inner ring body (31) is constructed on the inner end part of the first medium pipe joint (3); an inner ring body (31) on the first medium pipe joint (3) is integrally connected with the inner wall (200) of the capsule body and the inner wall (201) of the capsule opening, and the inner bulge (21) of the capsule body (2) is coated in the inner bulge.

3. The expansion tank of claim 1, wherein: the inner end part of the first medium pipe joint (3) is embedded in the bag body (2) at the bag opening and is vulcanized with the bag opening into a whole.

4. The expansion tank of claim 1, wherein: the outer end part of the first medium pipe joint (3) extends out of the tank body (1) from the through hole in the tank body (1) and is screwed and fixed by a nut (6).

5. The expansion tank of claim 1, wherein: the outer wall of the capsule body (2) is circumferentially provided with an outer bulge (22) along the edge of the capsule opening, and the axial direction of the outer bulge (22) corresponds to the radial range of the inner ring body (31).

6. The expansion tank of claim 5, wherein: the outer protrusion (22) has at least one continuous convex ring which is closed end to end, and the outer end surface of the cross section of the convex ring is formed into an arc shape or a conical shape with gradually increasing area from the outside to the inside.

7. The expansion tank of claim 1, wherein: the second medium pipe joint (4) is integrally constructed on the side wall of the tank body (1), the tank body (1) is formed by mutually welding and sealing an upper shell (101) and a lower shell (102) which are oppositely arranged, or the tank body (1) is formed by sealing the upper shell (101) and the lower shell (102) which are oppositely arranged by using a flange structure and a sealing gasket of the upper shell (101) and the lower shell.

8. The expansion tank of claim 1, wherein: a flange opening (103) capable of installing the bag body (2) into the tank body (1) is formed in the side wall of the tank body (1), and a flange plate (5) is connected to the flange opening (103); a second medium pipe joint (4) is constructed on the flange plate (5), and a sealing gasket (51) is arranged between the flange plate (5) and the flange opening (103) of the tank body (1).

9. Expansion tank according to any one of claims 1-8, characterized in that: the inner cavity (11) of the tank body is used for filling liquid, and the second medium pipe joint (4) is a water joint; the interior of the bag body (2) is filled with gas, and the first medium pipe joint (3) is an inflating nozzle assembly joint.

10. Expansion tank according to any of claims 1-8, characterized in that: the inner cavity (11) of the tank body is used for filling gas, and the second medium pipe joint (4) is a charging connector assembly joint; the interior of the capsule body (2) is used for filling liquid, and the first medium pipe joint (3) is a water joint.

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