Horizontal expansion tank
By installing support components in the horizontal expansion tank, the problem of damage caused by friction between the airbag and the tank side wall was solved, thus achieving the protective effect of the airbag.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGYU LIANFENG PRESSURE VESSEL CO LTD
- Filing Date
- 2025-06-05
- Publication Date
- 2026-04-17
AI Technical Summary
In horizontal expansion tanks, there is a problem of air bladders rupturing due to friction with the tank sidewalls.
A support assembly, including guide rails, support rods, guide wheels, and limit plates, is installed in the horizontal expansion tank to support the airbag and reduce friction between the airbag and the side wall of the tank.
It effectively prevents friction damage between the airbag and the side wall of the tank, thus improving the service life of the airbag.
Smart Images

Figure CN224131884U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to expansion tanks, and more specifically, to a horizontal expansion tank. Background Technology
[0002] Expansion tanks typically contain two air bladders. The first bladder is filled with water and connected to an external water circulation system, while the second bladder is filled with gas. This causes the two air bladders to compress each other. In horizontal expansion tanks, both air bladders are positioned horizontally. Under the influence of gravity, the two air bladders will droop towards the side wall of the tank, causing them to come into contact with the side wall. When the air bladders expand or contract, there is a possibility of friction with the side wall of the tank, which can easily cause the air bladders to rupture. Utility Model Content
[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a horizontal expansion tank that can prevent damage caused by friction between the airbag and the tank body.
[0004] To achieve the above objectives, the present invention adopts the following technical solution: a horizontal expansion tank, comprising a first tank body and a second tank body, wherein a first airbag is installed in the first tank body and a second airbag is installed in the second tank body, and both the first tank body and the second tank body are equipped with a support assembly for supporting the first airbag or the second airbag, wherein the support assembly includes a guide rail installed on the side wall of the first tank body or the second tank body, wherein a movable support rod is installed on the guide rail, and wherein the support rod is connected to a baffle that abuts against the first airbag or the second airbag.
[0005] Furthermore, a guide groove is provided in the guide rail, and a third opening is provided on the side of the guide groove facing the first airbag or the second airbag. A guide wheel that can move along the guide groove is installed in the guide groove, and the guide wheel is connected to a connecting rod that extends out of the third opening and is connected to the support rod.
[0006] Furthermore, a fixing plate is connected inside the guide groove, and a tension spring is connected between the fixing plate and the connecting rod.
[0007] Furthermore, the support rod is provided with a plurality of limiting plates extending toward the first airbag or the second airbag, and the limiting plates compress the first airbag or the second airbag.
[0008] Furthermore, the limiting plates are arranged along the length of the support rod, and the width of the limiting plates gradually increases from the point where the support rod is away from the connection between the first tank and the second tank toward the connection between the first tank and the second tank.
[0009] Furthermore, the first tank body has a first opening, and the first airbag is equipped with a liquid port, which extends out of the first opening and is fixed to the first tank body by a first fastening nut.
[0010] Furthermore, the second tank body has a second opening, and the second airbag is equipped with a gas port, which extends out of the second opening and is fixed to the second tank body by a second fastening nut.
[0011] In summary, this utility model has the following beneficial effects:
[0012] The first and second tanks are equipped with guide rails, and the guide rails contain connecting rods that can move along the guide rails. The connecting rods are connected to baffles, and the connecting rods are also equipped with limit plates. The limit plates and baffles support the first or second airbag, thereby preventing the first or second airbag from rubbing against the inner wall of the first or second tank and causing damage. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of this utility model;
[0014] Figure 2 for Figure 1 Enlarged view of point A in the middle;
[0015] Figure 3 This is a schematic diagram of the structure inside the guide rail;
[0016] Figure 4 This is a cross-sectional view of the guide rail;
[0017] Reference numerals in the attached drawings: First tank 100, First opening 110, Second tank 200, Second opening 210, First airbag 300, Liquid port 310, First fastening nut 311, Second airbag 400, Gas port 410, Second fastening nut 411, Guide rail 500, Guide groove 501, Third opening 502, Guide wheel 510, Support shaft 511, Fixing plate 520, Tension spring 530, Support rod 600, Connecting rod 610, Limiting plate 620, Baffle 700. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0019] See Figures 1 to 4This embodiment discloses a horizontal expansion tank, including a first tank body 100 and a second tank body 200. Both the first tank body 100 and the second tank body 200 have an open end, and their open ends face each other and are connected by fasteners to form the entire tank body. A first airbag 300 is installed inside the first tank body 100, and a second airbag 400 is installed inside the second tank body 200. Both the first airbag 300 and the second airbag 400 expand towards each other, allowing them to compress each other.
[0020] The first airbag 300 is used to fill liquid. The first tank 100 has a first opening 110. The first airbag 300 is equipped with a liquid port 310 for the inlet and outlet of liquid. The liquid port 310 extends out of the first opening 110, and the outer surface of the portion extending out of the first opening 110 is provided with threads. The liquid port 310 is fixed to the first tank 100 by a first fastening nut 311 fitted on the liquid port 310.
[0021] The second airbag 400 is used to fill gas. The second tank 200 has a second opening 210. The second airbag 400 is equipped with a gas port 410 for gas to enter and exit. The gas port 410 extends out of the second opening 210, and the outer surface of the extended part is provided with threads. It is fixed to the second airbag 400 and the second tank 200 by a second fastening nut 411 sleeved on the gas port 410.
[0022] The first airbag 300 is connected to an external pipeline. When the pressure in the pipeline changes, the pressure inside the first airbag 300 changes. Under the compression of the second airbag 400, the liquid inside the first airbag 300 can be forced into the pipeline or the liquid in the pipeline can be forced into the first airbag 300, thereby regulating the pressure in the pipeline.
[0023] Both the first tank 100 and the second tank 200 are equipped with a support assembly for supporting the first airbag 300 or the second airbag 400. The support assembly includes a guide rail 500 installed on the side wall of the first tank 100 or the second tank 200, a movable support rod 600 installed on the guide rail 500, and a baffle 700 connected to the support rod 600 to abut against the first airbag 300 or the second airbag 400. The ends of the first airbag 300 and the second airbag 400 are respectively embedded in the support structure formed by the support rod 600 and the baffle 700 of the two support components, thereby supporting the first airbag 300 and the second airbag 400, reducing the friction between the side walls of the first airbag 300 and the second airbag 400 and the side walls of the first tank 100 or the second tank 200. At the same time, the contact between the baffles 700 of the two support components replaces the contact between the first airbag 300 and the second airbag 400, so that the pressure generated by the compression between the first airbag 300 and the second airbag 400 is applied to each other more evenly, reducing the influence of gravity.
[0024] A guide groove 501 is provided within the guide rail 500. A third opening 502 is provided on the side of the guide groove 501 facing the first airbag 300 or the second airbag 400. A guide wheel 510, movable along the guide groove 501, is installed within the guide groove 501. A support shaft 511 is connected to the center of the guide wheel 510. A connecting rod 610 is connected to the support shaft 511, which passes through the connecting rod 610, allowing relative rotation between the support shaft 511 and the connecting rod 610. This allows the connecting rod 610 to extend out of the third opening 502, and one end of the connecting rod 610 extending out of the third opening 502 is connected to the support rod 600. The expansion and contraction of the first airbag 300 or the second airbag 400 can move the baffle 700. The movement of the baffle 700 can move the support rod 600, and the movement of the support rod 600 can move the guide wheel 510 along the guide groove 501.
[0025] A fixing plate 520 is connected to one end of the guide groove 501 away from the connection between the first tank 100 and the second tank 200. A tension spring 530 is connected between the fixing plate 520 and the connecting rod 610. The tension spring 530 can restrict the movement of the connecting rod 610 toward the connection between the first tank 100 and the second tank 200, so that the baffle 700 can be tightly attached to the end of the first airbag 300 or the second airbag 400. The support structure formed by the baffle 700 and the connecting rod 610 can hold the first airbag 300 or the second airbag 400 like a net, thereby supporting the first airbag 300 or the second airbag 400.
[0026] The support rod 600 is provided with multiple limiting plates 620 extending toward the first airbag 300 or the second airbag 400, which compress the first airbag 300 or the second airbag 400. The limiting plates 620 are arranged along the length of the support rod 600, and the width of the limiting plates 620 gradually increases from the point where the support rod 600 is away from the connection between the first tank 100 and the second tank 200 toward the connection between the first tank 100 and the second tank 200. The limiting plates 620 can clamp the first airbag 300 or the second airbag 400, and the gradually lengthening limiting plates 620 can also adapt to the shape of the ends of the first airbag 300 or the second airbag 400, further clamping the ends of the first airbag 300 or the second airbag 400 and preventing the first airbag 300 or the second airbag 400 from detaching from the support assembly.
[0027] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.
Claims
1. A horizontal expansion tank, characterized in that, The device includes a first tank (100) and a second tank (200). The first tank (100) is equipped with a first airbag (300), and the second tank (200) is equipped with a second airbag (400). Both the first tank (100) and the second tank (200) are equipped with a support assembly for supporting the first airbag (300) or the second airbag (400). The support assembly includes a guide rail (500) installed on the side wall of the first tank (100) or the second tank (200). The guide rail (500) is equipped with a movable support rod (600), and the support rod (600) is connected to a baffle (700) that abuts against the first airbag (300) or the second airbag (400).
2. The horizontal expansion tank according to claim 1, characterized in that The guide rail (500) has a guide groove (501) inside. The guide groove (501) has a third opening (502) on the side facing the first airbag (300) or the second airbag (400). A guide wheel (510) that can move along the guide groove (501) is installed inside the guide groove (501). The guide wheel (510) is connected to a connecting rod (610) that extends out of the third opening (502) and is connected to the support rod (600).
3. The horizontal expansion tank according to claim 2, characterized in that A fixing plate (520) is connected inside the guide groove (501), and a tension spring (530) is connected between the fixing plate (520) and the connecting rod (610).
4. The horizontal expansion tank according to claim 1, characterized in that The support rod (600) is provided with a plurality of limiting plates (620) extending toward the first airbag (300) or the second airbag (400), the limiting plates (620) squeezing the first airbag (300) or the second airbag (400).
5. The horizontal expansion tank according to claim 4, characterized in that The limiting plate (620) is arranged along the length of the support rod (600), and the width of the limiting plate (620) gradually increases from the point where the support rod (600) is away from the connection between the first tank (100) and the second tank (200) toward the connection between the first tank (100) and the second tank (200).
6. The horizontal expansion tank according to claim 1, characterized in that The first tank (100) has a first opening (110), and the first airbag (300) is equipped with a liquid port (310). The liquid port (310) extends out of the first opening (110) and is fixed to the first tank (100) by a first fastening nut (311).
7. The horizontal expansion tank according to claim 1, characterized in that The second tank (200) has a second opening (210), and the second airbag (400) is equipped with a gas port (410). The gas port (410) extends out of the second opening (210) and is fixed to the second tank (200) by a second fastening nut (411).