Low-pressure barrel and refrigeration house

Abstract

The utility model relates to the technical field of refrigeration equipment, and provides a low-pressure barrel which comprises a barrel body, a first connecting pipe, a second connecting pipe, a first switch valve, a second switch valve, a maintenance pipe, a first flange plate and an electronic liquid level meter. One end of the first connecting pipe is arranged on the lower side of the barrel body in a communicating mode, the other end of the first connecting pipe is arranged on one side of the lower end of the overhaul pipe in a communicating mode, and the first switch valve is arranged on the first connecting pipe. One end of the second connecting pipe is arranged on the upper side of the barrel body in a communicating mode, the other end of the second connecting pipe is arranged on one side of the upper end of the overhaul pipe in a communicating mode, and the second switch valve is arranged on the second connecting pipe; the maintenance pipe is vertical, the lower end of the maintenance pipe is open, and the first flange plate is detachably connected to the lower end of the maintenance pipe; and the electronic liquid level meter is arranged in the maintenance pipe. On the basis, the electronic liquid level meter can be conveniently maintained. In addition, the utility model further provides the refrigeration house.

Description

Technical Field

[0001] The present application relates to the field of refrigeration equipment, and in particular to a low-pressure barrel and a cold storage. Background Art

[0002] A cold storage is a kind of refrigeration equipment, which creates an environment different from the outdoor temperature or humidity, and is also a constant temperature and humidity storage equipment for items such as food, liquid, chemical industry, medicine, vaccine, and scientific experiments.

[0003] In the related art, a cold storage includes an external unit and an internal unit. The internal unit is installed inside the cold storage, and the external unit is installed inside the control room. When the internal unit works, it will convert into high-temperature and high-pressure dry saturated liquid Freon steam. The high-temperature and high-pressure dry saturated liquid Freon steam will be reconverted into high-pressure and low-temperature subcooled liquid Freon through the external unit. The high-pressure and low-temperature subcooled liquid Freon re-enters the internal unit for heat exchange, so as to achieve the effect of refrigerating the cold storage.

[0004] Among them, a low-pressure barrel needs to be set on the external unit. The liquid in the low-pressure barrel is transported to the end of the external unit through a pump. At the same time, the low-pressure barrel stores liquid Freon and needs to maintain a certain amount. When the liquid Freon is insufficient, it needs to be replenished in time, and when there is too much, it also needs to be pumped out in time.

[0005] Therefore, an electronic liquid level gauge is provided in the low-pressure barrel to detect the liquid level of the liquid Freon in the low-pressure barrel in real time. However, in actual application, when the electronic liquid level gauge is damaged, it is necessary to empty all the liquid Freon in the low-pressure barrel before it can be repaired, and the operation is relatively complicated, so it needs to be improved. Utility Model Content

[0006] In order to facilitate the repair of the electronic liquid level gauge, in a first aspect, the present application provides a low-pressure barrel.

[0007] The low-pressure barrel provided by the present application adopts the following technical solutions:

[0008] A low-pressure barrel includes a barrel body, a first connecting pipe, a second connecting pipe, a first switching valve, a second switching valve, a maintenance pipe, a first flange and an electronic liquid level gauge; one end of the first connecting pipe is communicatively provided on the lower side of the barrel body, and the other end is communicatively provided on one side of the lower end of the maintenance pipe, and the first switching valve is provided on the first connecting pipe; one end of the second connecting pipe is communicatively provided on the upper side of the barrel body, and the other end is communicatively provided on one side of the upper end of the maintenance pipe, and the second switching valve is provided on the second connecting pipe; the maintenance pipe is vertical and has an open lower end, and the first flange is detachably connected to the lower end of the maintenance pipe; the electronic liquid level gauge is provided in the maintenance pipe.

[0009] By adopting the above technical scheme, in actual application, since the two ends of the first connecting pipe are respectively connected to the barrel body and the inspection pipe, and the two ends of the second connecting pipe are respectively connected to the barrel body and the inspection pipe, according to the principle of communicating vessels, the liquid level height in the barrel body is the same as the liquid level height in the inspection pipe, and the liquid level of the liquid Freon in the barrel body can be detected in real time by detecting the liquid level height of the inspection pipe through the electronic liquid level gauge; wherein, when the electronic liquid level gauge is damaged, the first switch valve and the second switch valve are closed to prevent the liquid Freon in the barrel body from flowing into the inspection pipe, and then the first flange is removed to allow the liquid Freon in the inspection pipe to flow out, and then the electronic liquid level gauge is repaired. At this time, the electronic liquid level gauge can be repaired without completely draining the liquid Freon in the low-pressure barrel, thereby facilitating the repair of the electronic liquid level gauge.

[0010] Preferably, the low-pressure barrel also includes a plurality of fasteners, which are arranged at intervals along the circumference of the first flange, and the upper ends of the fasteners are passed through the first flange and threadedly connected to the inspection pipe, and the lower ends of the fasteners abut against the first flange.

[0011] By adopting the above technical solution and arranging a plurality of fasteners, the first flange can be detachably connected to the lower end of the inspection pipe, which has a simple structure and is easy to operate.

[0012] Preferably, the low-pressure barrel further comprises a sealing ring, and the sealing ring is arranged between the inspection pipe and the first flange.

[0013] By adopting the above technical solution, a sealing ring is set to improve the sealing between the first flange and the inspection pipe, and the liquid Freon in the inspection pipe is prevented from flowing out from between the first flange and the inspection pipe as much as possible, so as to improve the accuracy of liquid level detection of the liquid Freon in the barrel.

[0014] Preferably, the low-pressure barrel further includes a second flange, the upper end of the inspection pipe is also opened, and the second flange is detachably connected to the upper end of the inspection pipe.

[0015] By adopting the above technical solution and setting a second flange, when it is inconvenient for the lower end of the inspection pipe to let the liquid Freon in the inspection pipe flow out, the second flange can be removed and the liquid Freon in the inspection pipe can be extracted through the extraction device.

[0016] Preferably, the low-pressure barrel also includes two reinforcing support plates, one end of one of the reinforcing support plates is arranged on the barrel body, and the other end is arranged on the first connecting pipe, and one end of the other reinforcing support plate is arranged on the barrel body, and the other end is arranged on the second connecting pipe.

[0017] By adopting the above technical solution, the stability of the installation of the first connecting pipe and the second connecting pipe is improved by arranging two reinforcing support plates.

[0018] Preferably, an observation window is provided on the inspection pipe in the vertical direction.

[0019] By adopting the above technical solution, by arranging the observation window, the staff can view the liquid level height in the inspection pipe through the observation window, and can compare it with the liquid level height detected by the electronic liquid level gauge to ensure the accuracy of the liquid level height detected by the electronic liquid level gauge.

[0020] Preferably, scale lines are arranged on the inspection pipe in the vertical direction, and the positions of the scale lines match the positions of the observation windows.

[0021] By adopting the above technical solution, by arranging the scale lines, it is convenient for the staff to intuitively understand the liquid level height in the inspection pipe.

[0022] In a second aspect, the present application provides a cold storage.

[0023] The cold storage provided by the present application adopts the following technical solution:

[0024] A cold storage includes the low-pressure barrel described above.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. When the electronic liquid level gauge is damaged, the first switch valve and the second switch valve are closed to prevent the liquid fluorine refrigerant in the barrel from flowing into the inspection pipe. Then, by removing the first flange, the liquid fluorine refrigerant in the inspection pipe flows out, and then the electronic liquid level gauge is repaired. At this time, it is not necessary to empty all the liquid fluorine refrigerant in the low-pressure barrel to repair the electronic liquid level gauge, which is convenient for repairing the electronic liquid level gauge;

[0027] 2. By arranging the sealing ring, the sealing performance between the first flange and the inspection pipe is improved, and the liquid fluorine refrigerant in the inspection pipe is prevented from flowing out between the first flange and the inspection pipe as much as possible, so as to improve the accuracy of the liquid level detection of the liquid fluorine refrigerant in the barrel;

[0028] 3. By arranging the second flange, when it is inconvenient to drain the liquid fluorine refrigerant in the inspection pipe at the lower end of the inspection pipe, the second flange can be removed, and then the liquid fluorine refrigerant in the inspection pipe can be extracted by the extraction device. Description of the Drawings

[0029] Figure 1 It is a schematic diagram of the overall structure of the low-pressure barrel in Embodiment 1 of the present application;

[0030] Figure 2It is a schematic diagram of partial explosion of the low-pressure barrel in Embodiment 1 of the present application;

[0031] Figure 3 It is a schematic diagram of the partial structure of the low-pressure barrel in Embodiment 2 of the present application.

[0032] Reference numerals: 1, barrel body; 2, first connecting pipe; 3, second connecting pipe; 4, first switching valve; 5, second switching valve; 6, maintenance pipe; 61, observation window; 62, scale line; 7, first flange; 8, fastener; 9, sealing ring; 10, second flange; 11, strengthening support plate. Detailed implementation manners

[0033] The following further elaborates on the present application in conjunction with the attached Figures 1-3 drawings for a more detailed description.

[0034] Embodiment 1 of the present application discloses a low-pressure barrel.

[0035] Embodiment 1:

[0036] Referring to Figure 1 , the low-pressure barrel includes a barrel body 1, a first connecting pipe 2, a second connecting pipe 3, a first switching valve 4, a second switching valve 5, a maintenance pipe 6, a first flange 7, and an electronic liquid level gauge (not shown in the figure).

[0037] The barrel body 1 is hollow and stores liquid Freon. One end of the first connecting pipe 2 is fixedly connected to the lower side of the barrel body 1 and is in communication with the barrel body 1. The other end of the first connecting pipe 2 is fixedly connected to one side of the lower end of the maintenance pipe 6 and is in communication with the maintenance pipe 6. The first switching valve 4 is installed on the first connecting pipe 2. By opening or closing the first switching valve 4, it is controlled whether the barrel body 1 is in communication with the maintenance pipe 6 through the first connecting pipe 2.

[0038] Similarly, one end of the second connecting pipe 3 is fixedly connected to the upper side of the barrel body 1 and is in communication with the barrel body 1. The other end of the second connecting pipe 3 is fixedly connected to one side of the upper end of the maintenance pipe 6 and is in communication with the maintenance pipe 6. The second switching valve 5 is installed on the second connecting pipe 3. By opening or closing the second switching valve 5, it is controlled whether the barrel body 1 is in communication with the maintenance pipe 6 through the second connecting pipe 3.

[0039] The maintenance pipe 6 is vertical and has an open lower end. The first flange 7 is detachably connected to the lower end of the maintenance pipe 6 to block the opening at the lower end of the maintenance pipe 6. The electronic liquid level gauge is installed in the maintenance pipe 6 to detect the liquid level in the maintenance pipe 6, and the electronic liquid level gauge is electrically connected to a terminal controller (not shown in the figure) so that the electronic liquid level gauge transmits the detected data to the terminal controller for display.

[0040] In actual application, the first switch valve 4 and the second switch valve 5 are in an open state. Since the two ends of the first connecting pipe 2 are respectively connected to the barrel body 1 and the inspection pipe 6, and the two ends of the second connecting pipe 3 are respectively connected to the barrel body 1 and the inspection pipe 6, the liquid Freon in the barrel body 1 flows into the inspection pipe 6. According to the principle of communicating vessels, the liquid level height in the barrel body 1 is the same as the liquid level height in the inspection pipe 6. By detecting the liquid level height of the inspection pipe 6 by an electronic liquid level meter, the liquid level height of the liquid Freon in the barrel body 1 can be detected in real time.

[0041] Among them, when the electronic liquid level meter is damaged, the first switch valve 4 and the second switch valve 5 are closed to prevent the liquid Freon in the barrel body 1 from flowing into the inspection pipe 6 as much as possible, and then the first flange 7 is removed to allow the liquid Freon in the inspection pipe 6 to flow out, and then the electronic liquid level meter is repaired. At this time, there is no need to drain all the liquid Freon in the low-pressure barrel to achieve the maintenance of the electronic liquid level meter, thereby facilitating the maintenance of the electronic liquid level meter.

[0042] Reference Figure 1 and Figure 2 In some embodiments, the low-pressure barrel further includes a plurality of fasteners 8, which are bolts, and are evenly spaced along the circumference of the first flange 7. The upper end of the fastener 8 is passed through the first flange 7 and is threadedly connected to the inspection pipe 6. The lower end of the fastener 8 abuts against the first flange 7 to achieve a detachable connection to the first flange 7. The structure is simple and easy to operate, and the stability of the installation of the first flange 7 can be ensured. It should be noted that in other embodiments, the detachable connection of the first flange 7 to the lower end of the inspection pipe 6 can also be achieved by means of snap-on, plug-in, etc.

[0043] In some embodiments, the low-pressure barrel also includes a sealing ring 9, which is pressed between the inspection pipe 6 and the first flange 7 to improve the sealing between the first flange 7 and the inspection pipe 6, and try to avoid the liquid Freon in the inspection pipe 6 from flowing out from between the first flange 7 and the inspection pipe 6, so as to improve the accuracy of the liquid level detection of the liquid Freon in the barrel body 1.

[0044] In some embodiments, the low-pressure barrel further includes a second flange 10, and the upper end of the inspection pipe 6 is also opened. The second flange 10 is detachably connected to the upper end of the inspection pipe 6 to seal the upper end of the inspection pipe 6, wherein the second flange 10 is detachably connected to the inspection pipe 6 in the same manner as the first flange 7. In practical applications, it is sometimes inconvenient to flow the liquid Freon in the inspection pipe 6 out of the lower end of the inspection pipe 6. In this case, the second flange 10 can be disassembled and the liquid Freon in the inspection pipe 6 can be extracted through an extraction device.

[0045] In some embodiments, the low-pressure barrel further includes two reinforcing support plates 11, one end of one reinforcing support plate 11 is fixedly connected to the barrel body 1, and the other end is fixedly connected to the first connecting pipe 2 to improve the installation stability of the first connecting pipe 2. One end of another reinforcing support plate 11 is fixedly connected to the barrel body 1, and the other end is fixedly connected to the second connecting pipe 3 to improve the installation stability of the second connecting pipe 3.

[0046] The implementation principle of this embodiment is as follows: in actual application, the first switch valve 4 and the second switch valve 5 are in an open state, and since the two ends of the first connecting pipe 2 are respectively connected to the barrel body 1 and the inspection pipe 6, and the two ends of the second connecting pipe 3 are respectively connected to the barrel body 1 and the inspection pipe 6, the liquid Freon in the barrel body 1 flows into the inspection pipe 6. According to the principle of communicating vessels, the liquid level height in the barrel body 1 is the same as the liquid level height in the inspection pipe 6, and the liquid level height of the liquid Freon in the barrel body 1 can be detected in real time by detecting the liquid level height of the inspection pipe 6 through the electronic liquid level meter.

[0047] Among them, when the electronic liquid level meter is damaged, the first switch valve 4 and the second switch valve 5 are closed to prevent the liquid Freon in the barrel body 1 from flowing into the inspection pipe 6 as much as possible, and then the first flange 7 is removed to allow the liquid Freon in the inspection pipe 6 to flow out, and then the electronic liquid level meter is repaired. At this time, there is no need to drain all the liquid Freon in the low-pressure barrel to achieve the maintenance of the electronic liquid level meter, thereby facilitating the maintenance of the electronic liquid level meter.

[0048] Embodiment 2:

[0049] Reference Figure 3 The other structures of this embodiment are the same as those of embodiment 1, except that an observation window 61 is provided in the vertical direction of the inspection pipe 6, and the staff can check the liquid level height in the inspection pipe 6 through the observation window 61, and can compare it with the liquid level height detected by the electronic liquid level meter, so as to roughly judge whether the detection of the electronic liquid level meter is accurate. If the error between the two is large, the electronic liquid level meter needs to be repaired to ensure the accuracy of the liquid level height detected by the electronic liquid level meter.

[0050] In some embodiments, the inspection pipe 6 is provided with scale lines 62 along the vertical direction, and the scale lines 62 match the position of the observation window 61 , so that the staff can more accurately understand the liquid level height in the inspection pipe 6 through the scale lines 62 .

[0051] The embodiment of the present application also discloses a cold storage.

[0052] The cold storage includes the low-pressure barrel described in the above embodiment.

[0053] The above are all preferred embodiments of this application, and the protection scope of this application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A low-pressure barrel, characterized in that: The invention comprises a barrel body (1), a first connecting pipe (2), a second connecting pipe (3), a first switch valve (4), a second switch valve (5), a maintenance pipe (6), a first flange (7) and an electronic liquid level gauge; one end of the first connecting pipe (2) is connected to the lower side of the barrel body (1), and the other end is connected to one side of the lower end of the maintenance pipe (6), and the first switch valve (4) is arranged on the first connecting pipe (2); one end of the second connecting pipe (3) is connected to the upper side of the barrel body (1), and the other end is connected to one side of the upper end of the maintenance pipe (6), and the second switch valve (5) is arranged on the second connecting pipe (3); the maintenance pipe (6) is vertical and has an open lower end, and the first flange (7) is detachably connected to the lower end of the maintenance pipe (6); the electronic liquid level gauge is arranged in the maintenance pipe (6).

2. A low-pressure barrel according to claim 1, characterized in that: The low-pressure barrel further comprises a plurality of fasteners (8), wherein the plurality of fasteners (8) are arranged at intervals along the circumference of the first flange (7), and the upper ends of the fasteners (8) are passed through the first flange (7) and are threadedly connected to the inspection pipe (6), and the lower ends of the fasteners (8) abut against the first flange (7).

3. A low-pressure barrel according to claim 2, characterized in that: The low-pressure barrel further comprises a sealing ring (9), wherein the sealing ring (9) is arranged between the inspection pipe (6) and the first flange (7).

4. A low-pressure barrel according to claim 1, characterized in that: The low-pressure barrel further comprises a second flange (10), and the upper end of the inspection pipe (6) is also open, and the second flange (10) is detachably connected to the upper end of the inspection pipe (6).

5. A low-pressure barrel according to claim 1, characterized in that: The low-pressure barrel further comprises two reinforcing support plates (11), wherein one end of one of the reinforcing support plates (11) is arranged on the barrel body (1) and the other end is arranged on the first connecting pipe (2), and the other end of the reinforcing support plate (11) is arranged on the barrel body (1) and the other end is arranged on the second connecting pipe (3).

6. A low-pressure barrel according to claim 1, characterized in that: The inspection pipe (6) is provided with an observation window (61) along the vertical direction.

7. A low-pressure barrel according to claim 6, characterized in that: The inspection pipe (6) is provided with a scale line (62) along the vertical direction, and the position of the scale line (62) matches the position of the observation window (61).

8. A cold storage, characterized in that: Comprising a low-pressure barrel as described in any one of claims 1-7.

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