CN217383386U

CN217383386U - Fixed plate and liquid storage device

Info

Publication number: CN217383386U
Application number: CN202220740810.0U
Authority: CN
Inventors: 邓锟; 张克鹏; 郑明超; 马彦婷
Original assignee: Zhejiang Dunan Artificial Environment Co Ltd
Current assignee: Zhejiang Dunan Artificial Environment Co Ltd
Priority date: 2022-03-31
Filing date: 2022-03-31
Publication date: 2022-09-06
Anticipated expiration: 2032-03-31
Also published as: WO2023185381A1

Abstract

The fixing plate comprises a first connecting part, a second connecting part and a transition part, wherein the first connecting part is used for connecting the inner wall of a cylinder, and the second connecting part is used for connecting a connecting pipe; the transition portion is connected between the first connecting portion and the second connecting portion, and along the direction from the first connecting portion to the second connecting portion, the distance between the transition portion and the central axis of the fixing plate is gradually reduced. Set up transition portion between first connecting portion and second connecting portion, and along the direction of first connecting portion to second connecting portion, the distance between the axis of transition portion and fixed plate reduces gradually, has increased the moment of inertia of fixed plate through the transition portion of above-mentioned structure, has strengthened the rigidity of fixed plate. After the rigidity of the fixing plate is enhanced, the deformation resistance of the fixing plate is correspondingly enhanced, the deformation quantity is reduced and the vibration amplitude is correspondingly reduced when the system runs, and because the sound pressure level of noise and the vibration amplitude are in a direct proportion relationship, the noise is reduced, and the vibration noise is obviously improved.

Description

Fixed plate and liquid storage device

Technical Field

The application relates to the technical field of liquid storage, in particular to a fixing plate and a liquid storage device.

Background

The liquid storage device is an important part in a refrigeration system, is usually arranged between an evaporator and a compressor and is used for storing refrigerant and separating gas from liquid, so that a gas-phase medium is ensured to be sucked into the compressor, the liquid-phase medium is prevented from being sucked into a working cavity of the compressor to form liquid impact, and meanwhile, the liquid storage device also has the function of filtering impurities. However, when the compressor is in operation, the gas-phase medium is continuously sucked from the reservoir, and the pressure and flow rate of the gas-phase medium are continuously changed, so that the pulsation of the suction pressure and the vibration transmitted from the compressor housing cause the reservoir to resonate and cause the reservoir to generate high-frequency noise.

The inside of the liquid storage device is provided with a fixing plate 100a for fixing the air outlet connection pipe and having a certain noise elimination effect. As shown in fig. 1, the fixing plate 100a includes a first connection portion 110a for connecting an inner wall of the cylinder and a second connection portion 120a for connecting the air outlet pipe, the first connection portion 110a is a generally annular connection plate, and the second connection portion 110a is a generally planar connection plate. The size of the planar connecting plate in the prior art is large, and the diameter of the planar connecting plate is close to that of the annular connecting plate, so that the rigidity of the fixing plate 100a is poor, the amplitude is large under the action of pressure, and the noise eliminating effect is not obvious.

SUMMERY OF THE UTILITY MODEL

Accordingly, there is a need for a fixation plate and a reservoir that can improve rigidity and resistance to deformation.

A fixing plate is used for a liquid storage device, is arranged in a cylinder of the liquid storage device and is used for being connected with a connecting pipe of the liquid storage device, and comprises a first connecting part, a second connecting part and a transition part, wherein the first connecting part is used for being connected with the inner wall of the cylinder, and the second connecting part is used for being connected with the connecting pipe;

the transition portion is connected between the first connecting portion and the second connecting portion, and the distance between the transition portion and the central axis of the fixing plate is gradually reduced along the direction from the first connecting portion to the second connecting portion.

The beneficial effect of this scheme of adoption:

compared with the prior art, set up transition portion in this application between first connecting portion and second connecting portion, and follow the direction of first connecting portion to the second connecting portion, the distance between the axis of transition portion and fixed plate reduces gradually, has increased the moment of inertia of fixed plate through the transition portion of above-mentioned structure, and then has strengthened the rigidity of fixed plate. According to Hooke's law F ═ K · x, under the same external load, the greater the rigidity, the smaller the deformation, and the stronger the deformation resistance. After the rigidity of the fixing plate is enhanced, the deformation resistance of the fixing plate is correspondingly enhanced, and when a system runs, the deformation amount is reduced and the vibration amplitude is correspondingly reduced. Because the sound pressure level of the noise is in direct proportion to the amplitude, the noise is reduced, and the vibration noise problem of the liquid storage device is obviously improved.

In one embodiment, the first connecting part and the second connecting part have a height difference H in the axial direction of the fixing plate, the outer diameter of the fixing plate is D, and D/H between the outer diameter of the fixing plate D and the height difference H is more than or equal to 8 and less than or equal to 40.

In one embodiment, the transition is a tapered transition; or the transition part is an arc transition part.

In one embodiment, the center of the arc-shaped transition part is located inside the fixing plate.

In one embodiment, the transition part is a tapered transition part, the tapered transition part comprises at least two sections of conical surfaces, the slopes of the at least two sections of conical surfaces are different, and the conical surfaces are smoothly connected with each other;

or the transition part is an arc transition part, the arc transition part comprises at least two arc surfaces, the curvatures of the at least two arc surfaces are different, and the arc surfaces are smoothly connected with each other.

In one embodiment, the transition part is provided with a through hole for allowing the liquid-phase medium in the reservoir to pass through.

In one embodiment, the transition part comprises a plurality of through holes, and the through holes are uniformly distributed along the circumferential direction of the transition part, so that the liquid-phase medium uniformly flows out along a plurality of circumferential positions of the transition part, and the flow is smoother. The inclined structure of combining transition portion has the water conservancy diversion effect, and under the effect of gravity, liquid medium flows to through-hole department and flows out along the inclined plane flow direction of transition portion.

In one embodiment, the through hole is an elliptical through hole, an extension line of a long axis of the through hole intersects with a central axis of the transition part, and due to the special structure of the transition part, when a short axis of the elliptical through hole is the same as the diameter of the circular through hole, the area of the elliptical through hole is larger than that of the circular through hole, and the flow area of the liquid-phase medium is increased; meanwhile, the hole wall of the oval through hole is obliquely arranged, so that the liquid-phase medium has a flow guiding effect.

In one embodiment, the transition part is smoothly connected with the first connecting part, so that stress concentration is avoided, and the overall strength and the deformation resistance of the fixing plate are further improved; and/or, the transition part with second connecting portion smooth connection avoids stress concentration, further improves fixed plate bulk strength and anti deformability.

In one embodiment, the first connecting portion is an annular connecting plate, and the second connecting portion is a planar connecting plate; the second connecting portion is provided with a mounting hole, a side face, far away from the first connecting portion, of the second connecting portion is provided with a turned-over edge, and the turned-over edge is arranged at the mounting hole in a surrounding mode and is used for being fixedly connected with the connecting pipe.

The utility model discloses another technical scheme as follows:

a liquid storage device, comprising the fixing plate, a cylinder and a connecting pipe in any one of the above technical solutions, wherein the cylinder comprises an inlet and an outlet, one end of the connecting pipe is located in the cylinder, and the other end of the connecting pipe penetrates out of the outlet;

the cylinder body comprises an inlet and an outlet, one end of the connecting pipe is positioned in the cylinder body, the other end of the connecting pipe penetrates out of the outlet, and the first connecting part and the second connecting part are sequentially distributed along the direction from the inlet to the outlet; or, the barrel comprises an inlet and an outlet, one end of the connecting pipe is located in the barrel, the other end of the connecting pipe penetrates out of the outlet, and the second connecting part and the first connecting part are sequentially distributed along the direction from the inlet to the outlet.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or the conventional technologies of the present application, the drawings used in the descriptions of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the following descriptions are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a sectional view of a reservoir fixing plate in the related art.

Fig. 2 is a cross-sectional view of a reservoir of one construction provided in the present application, with the fixation plate inverted within the barrel of the reservoir.

Fig. 3 is a perspective view of a fixation plate with a tapered transition portion as provided herein.

Fig. 4 is a side view of a fixation plate with a tapered transition provided herein.

Fig. 5 is a sectional view taken along a-a in fig. 4.

Fig. 6 is a cross-sectional view of a reservoir of another construction provided in the present application, with the mounting plate being mounted within the barrel of the reservoir.

Fig. 7 is a cross-sectional view of a reservoir of another construction provided in the present application, with the fixation plate inverted within the barrel of the reservoir.

Fig. 8 is a perspective view of a fixing plate with an arc-shaped transition portion according to the present application.

Fig. 9 is a perspective view of another fixation plate with an arcuate transition portion provided in the present application.

Fig. 10 is a graph showing the relationship between the amount of deformation X and the height difference H of the fixing plate provided in the present application.

Reference numerals are as follows:

100. a barrel; 110. an inlet; 120. an outlet; 200. taking over a pipe; 300. a fixing plate; 310. a first connection portion; 320. a second connecting portion; 321. mounting holes; 322. a through hole; 330. flanging; 340. a transition section; 350. a first arcuate connecting section; 360. a second arcuate connecting section; 400. and (4) end covers.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiment in many different forms than those described herein and those skilled in the art will be able to make similar modifications without departing from the spirit of the application and therefore the application is not limited to the specific embodiments disclosed below.

It will be understood that when an element is referred to as being "secured to" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used in the description of the present application are for illustrative purposes only and do not represent the only embodiments.

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 implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact via an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the description of this application, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The fixing plate 300 and the reservoir according to the present invention will be described in detail with reference to the accompanying drawings and the following embodiments:

the present invention will be described below by taking a gas-liquid separator as an example, but those skilled in the art will understand that the present invention can also be applied to other liquid storage devices requiring separation of two or more media.

As shown in fig. 2, 6 and 7, the reservoir includes a cylinder 100, a nipple 200, a fixing plate 300 and an end cap 400. The cylinder 100 includes an inlet 110 and an outlet 120, and referring to the placement position of the reservoir in the drawing, when the reservoir is placed in a vertical direction, the inlet 110 is located at the upper end of the cylinder 100, the outlet 120 is located at the lower end of the cylinder 100, one end of the connection tube 200 is located in the cylinder 100, and the other end of the connection tube 200 penetrates through the outlet 120. The refrigerant entering the liquid storage device is a gas-liquid mixture, mainly gas, so that gas-liquid separation is carried out through a gas-liquid separator, and liquid is prevented from entering the compressor to cause hydraulic pressure.

Of course, the orientation of the reservoirs in the drawings is for ease of description and understanding, and those skilled in the art will appreciate that other orientations of the reservoirs may be used in other embodiments.

The fixing plate 300 is mounted in the cylinder 100 of the liquid reservoir and is connected to the connection pipe 200 of the liquid reservoir, the fixing plate 300 specifically includes a first connection portion 310 and a second connection portion 320, the first connection portion 310 is used for connecting to the inner wall of the cylinder 100, and the second connection portion 320 is used for connecting to the connection pipe 200. The first connection portion 310 is generally a ring-shaped connection plate welded to the inner wall of the cylinder 100, and the second connection portion 320 is generally a plane connection plate for the fixing plate 300 for connecting two or more adapter tubes 200. The planar connecting plate is provided with a mounting hole 321, one side surface of the planar connecting plate, which is far away from the annular connecting plate, is provided with a flange 330, the flange 330 is surrounded at the mounting hole 321, one end of the connecting pipe 200 is inserted into the mounting hole 321 and welded with the flange 330, namely, one end of the connecting pipe 200 is positioned in the cylinder 100, and the other end of the connecting pipe passes through the end cover 400 and extends out of the liquid reservoir, so that the gas phase medium entering the liquid reservoir flows out of the liquid reservoir through the connecting pipe 200.

As shown in fig. 1, the planar connection plate in the prior art has a large size, and the diameter of the planar connection plate is close to that of the annular connection plate, so that the rigidity of the fixing plate 300 is poor, the amplitude of the vibration is large under the pressure, and the noise improvement effect is poor.

In order to overcome the above technical problem, referring to fig. 2 to 9, according to an embodiment of the present invention, the fixing plate 300 further includes a transition portion 340, the transition portion 340 is connected between the first connecting portion 310 and the second connecting portion 320, and a distance between the transition portion 340 and the central axis of the fixing plate 300 is gradually reduced along a direction from the first connecting portion 310 to the second connecting portion 320.

In this embodiment, the transition portion 340 is disposed between the first connection portion 310 and the second connection portion 320, and the distance between the transition portion 340 and the central axis of the fixing plate 300 is gradually reduced along the direction from the first connection portion 310 to the second connection portion 320, so that the moment of inertia of the fixing plate 300 is increased by the transition portion 340 with the above structure, and the rigidity of the fixing plate 300 is further enhanced. According to Hooke's law F ═ K · x, the higher the stiffness, the lower the deformation, and the stronger the deformation resistance under the same external load. After the rigidity of the fixing plate 300 is enhanced, the deformation resistance of the fixing plate is correspondingly enhanced, and when the system runs, the deformation amount is reduced and the vibration amplitude is correspondingly reduced. Because the sound pressure level of the noise is in direct proportion to the amplitude, the noise is reduced, and the vibration noise problem of the liquid storage device is obviously improved.

Referring to fig. 6, preferably, the first connection portion 310 and the second connection portion 320 are sequentially distributed along the direction from the inlet 110 to the outlet 120. That is, the first connecting portion 310 is located above the second connecting portion 320, and the fixing plate 300 forms a concave structure in the reservoir, which is more beneficial to improving the vibration noise of the reservoir, and at this time, the fixing plate 300 is installed in the cylinder 100 of the reservoir.

Of course, in other embodiments, referring to fig. 2 and 7, the second connection portions 320 and the first connection portions 310 are sequentially distributed along the direction from the inlet 110 to the outlet 120. That is, the first connection portion 310 is located below the second connection portion 320, and the fixed plate 300 forms an upper convex structure in the reservoir, if the fixed plate 300 is inversely installed in the cylinder 100 of the reservoir.

Through setting up above-mentioned transition portion 340, make first connecting portion 310 and second connecting portion 320 have difference in height H on the axis, establish fixed plate 300 external diameter as D, the internal diameter of barrel 100 is D promptly, according to the test result, under D certain circumstances, difference in height H is bigger, the better is the rigidity of fixed plate 300, then the damping noise reduction effect is better, thereby difference in height H is better in technology allowed range more, but H too big will lead to the shaping wall thickness rate of weakening too big again, has increased the risk of fracture. Therefore, in the present embodiment, it is preferable that the outer diameter D of the fixing plate 300 and the height difference H satisfy 8 ≦ D/H ≦ 40.

Referring to fig. 2-5, the transition 340 in the present embodiment is preferably a tapered transition. Preferably, the tapered transition portion comprises at least two sections of tapered surfaces, the corresponding slopes of the at least two sections of tapered surfaces are different, and the tapered surfaces are smoothly connected with each other.

Of course, referring to fig. 6-9, in other embodiments, the transition portion 340 may also be an arc-shaped transition portion. Preferably, the arc transition part comprises at least two arc surfaces, the corresponding curvatures of the at least two arc surfaces are different, and the arc surfaces are smoothly connected with each other. Preferably, the center of the arc transition portion is located inside the fixing plate 300, i.e., the transition portion 340 is a convex arc transition portion.

Of course, in other embodiments, the center of the arc transition portion may be located outside the fixing plate 300, i.e. the transition portion 340 is a concave arc transition portion.

In order to facilitate the liquid phase medium to pass through, the transition portion 340 is provided with a plurality of through holes 322, preferably, the through holes 322 are uniformly distributed along the circumferential direction of the transition portion 340, so that the liquid phase medium uniformly flows out along a plurality of positions of the transition portion 340 along the circumferential direction, the liquid phase medium flows more smoothly, and the liquid phase medium is prevented from being concentrated at a certain position to cause overlarge pressure at the position. Meanwhile, the inclined structure of the transition part 340 has a flow guiding effect, and under the action of gravity, the liquid-phase medium flows to the through hole 341 along the inclined surface of the transition part 340 and flows out.

The through hole 322 is preferably an elliptical through hole, and as shown in fig. 5, the long axis of the through hole 322 intersects with the central axis b of the transition part 340, that is, the extension line a of the long axis of the elliptical through hole is on the same plane with the central axis b of the transition part 340, that is, the extension line a of the long axis of the elliptical through hole is located on the emission line which is inclined downward from the central axis b of the transition part 340.

Due to the special conical or arc-shaped structure of the transition part 340, namely the transition part 340 has an inclined structure, when the minor axis of the oval through hole is the same as the diameter of the round through hole, the area of the oval through hole is larger than that of the round through hole, so that the flow area of the medium is increased; meanwhile, the hole wall of the oval through hole is obliquely arranged, so that the flow guiding effect is achieved, and the medium can flow more conveniently.

In order to avoid stress concentration at the connection position of the transition portion 340 and the first connection portion 310 when the system is in operation, as shown in fig. 3 to 5, 8 and 9, the transition portion 340 and the first connection portion 310 are smoothly connected, i.e. a first arc-shaped connection section 350 is arranged between the transition portion 340 and the first connection portion 310. Similarly, in order to avoid stress concentration between the transition portion 340 and the second connection portion 320 when the system operates, as shown in fig. 3 to 5 and 8, the transition portion 340 and the second connection portion 320 may be connected smoothly, that is, a second arc-shaped connection section 360 is disposed between the transition portion 340 and the second connection portion 320. The overall rigidity and the deformation resistance of the fixing plate 300 are further improved by the first arc connecting section 350 and the second arc connecting section 360.

In this application, with the great plane connecting plate of the size of connecting pipe 200 on the fixed plate 300 among the prior art, improve the structure that the less second connecting portion 320 of size and the transition portion 340 of conical surface or cambered surface combine, strengthened the rigidity and the anti deformability of fixed plate 300 to at compressor during operation, reduce the vibration range of fixed plate 300, the noise also can reduce thereupon, makes the vibration noise problem of reservoir can show the improvement.

The deformation amounts of the fixing plates 300 having different height differences H, different shapes of the transition portions, and different mounting manners under the same load F were measured, and the results of the measurements are shown in table 1, and a graph of the relationship X of the deformation amount of the fixing plate 300 with the height difference H obtained from the results of the measurements is shown in fig. 10.

TABLE 1

Note: in table 1, the forward mounting-taper means that the fixing plate 300 is mounted in the cylinder 100 of the reservoir, and the transition portion 340 of the fixing plate 300 is a tapered transition portion; forward mounting-arc 1 means that the structure of the fixing plate 300 is the structure in fig. 9, the transition part 340 of the fixing plate 300 is an arc transition part, and the fixing plate 300 is being mounted in the cylinder 100 of the reservoir; forward mounting-arc 2 means that the structure of the fixing plate 300 is the structure in fig. 8, the transition part 340 of the fixing plate 300 is an arc transition part, and the fixing plate 300 is being mounted in the cylinder 100 of the reservoir; the reversed-conical shape means that the fixing plate 300 is reversely installed in the cylinder 100 of the reservoir, and the transition part 340 of the fixing plate 300 is a conical transition part; the reversed-arc 1 means that the structure of the fixing plate 300 is the structure in fig. 9, the transition part 340 of the fixing plate 300 is an arc transition part, and the fixing plate 300 is reversely arranged in the cylinder 100 of the reservoir; the reversed-arc 2 means that the structure of the fixing plate 300 is the structure in fig. 8, the transition portion 340 of the fixing plate 300 is an arc transition portion, and the fixing plate 300 is reversely installed in the cylinder 100 of the reservoir.

In fig. 10, S1, S2, S3, S4, S5 and S6 are graphs showing the relationship between the deformation amount X and the height difference H of the reverse-installed-arc 1, the reverse-arc 2, the forward-installed-arc 1, the forward-installed-arc 2, the reverse-installed-conical shape and the forward-installed-conical shape fixing plate 300, respectively.

According to hooke's law: and F is K x, and when the external load F is constant, the smaller the deformation amount x is, the larger the rigidity K is. As can be seen from table 1 and fig. 10, in general trend, as the height difference H between the first connection portion 310 and the second connection portion 320 is larger, the deformation amount x is smaller, and the rigidity K is larger.

And under the same height difference H, the rigidity of the fixing plate 300 with the conical transition part is optimal, and the vibration reduction effect is better.

Meanwhile, the fixing plate 300 with the same shape has higher rigidity and better damping effect when being installed normally.

All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.

Claims

1. A fixing plate for a liquid reservoir, the fixing plate being installed in a cylinder (100) of the liquid reservoir for connecting a nipple (200) of the liquid reservoir, characterized in that the fixing plate (300) comprises a first connecting portion (310), a second connecting portion (320), and a transition portion (340), the first connecting portion (310) being for connecting an inner wall of the cylinder (100), the second connecting portion (320) being for connecting the nipple (200);

the transition portion (340) is connected between the first connecting portion (310) and the second connecting portion (320), and the distance between the transition portion (340) and the central axis of the fixing plate (300) is gradually reduced along the direction from the first connecting portion (310) to the second connecting portion (320).

2. The fixing plate according to claim 1, wherein the first connecting portion (310) and the second connecting portion (320) have a height difference H in an axial direction of the fixing plate, the fixing plate has an outer diameter D, and D/H is 8 ≦ 40 between the fixing plate outer diameter D and the height difference H.

3. A fixation plate according to claim 1, wherein the transition (340) is a tapered transition; or the transition portion (340) is an arc-shaped transition portion.

4. A fixation plate according to claim 3, wherein the centre of the arc-shaped transition is located inside the fixation plate (300).

5. A fixation plate according to claim 3, wherein the transition portion (340) is a tapered transition portion comprising at least two tapered surfaces, the slopes of the at least two tapered surfaces being different, the tapered surfaces being smoothly connected to each other;

or the transition part (340) is an arc transition part, the arc transition part comprises at least two arc surfaces, the curvatures of the at least two arc surfaces are different, and the arc surfaces are connected with the arc surfaces smoothly.

6. The retaining plate of claim 1, wherein the transition portion (340) is provided with a through hole (322), and the through hole (322) is used for allowing the liquid medium in the reservoir to pass through.

7. The fixation plate of claim 6, wherein the transition portion (340) comprises a plurality of through holes (322), and the plurality of through holes (322) are evenly distributed along the circumference of the transition portion (340).

8. The fixation plate of claim 6, wherein the through hole (322) is an elliptical through hole, and an extension of a major axis of the through hole (322) intersects a central axis of the transition portion (340).

9. The fixation plate of claim 1, wherein the transition portion (340) is smoothly connected with the first connection portion (310); and/or the transition part (340) is smoothly connected with the second connecting part (320).

10. The fixation plate of claim 1, wherein the first connection portion (310) is an annular connection plate and the second connection portion is a planar connection plate; the second connecting portion (320) is provided with a mounting hole (321), the second connecting portion (320) is far away from a side face of the first connecting portion (310) and is provided with a flanging (330), and the flanging (330) is arranged at the mounting hole (321) in a surrounding mode and is used for being fixedly connected with the connecting pipe (200).

11. A liquid storage device, comprising the fixing plate (300) as set forth in any one of claims 1 to 10, a cylinder (100) and a connecting tube (200), wherein the cylinder (100) comprises an inlet (110) and an outlet (120), one end of the connecting tube (200) is located in the cylinder (100), and the other end of the connecting tube (200) passes through the outlet (120);

wherein the first connecting part (310) and the second connecting part (320) are sequentially distributed along the direction from the inlet (110) to the outlet (120); alternatively, the second connecting portion (320) and the first connecting portion (310) are sequentially distributed along the direction from the inlet (110) to the outlet (120).