Automatic drainage device for differential pressure gauge

Abstract

The utility model discloses a differential pressure gauge automatic drainage device, and belongs to the field of differential pressure gauge novel combination installation devices, the device comprises a differential pressure gauge arranged on a barrel body, and a high-pressure connector and a low-pressure connector of the differential pressure gauge are both connected with hoses communicated with the barrel body; automatic liquid discharging structures are symmetrically arranged on the barrel body, and each automatic liquid discharging structure comprises a liquid sealing pipe arranged on the barrel body and communicated with the hose, a water supplementing pipe fixedly arranged at the end, close to the hose, of the liquid sealing pipe and communicated with the liquid sealing pipe, and a liquid discharging pipe fixedly arranged at the end, away from the hose, of the liquid sealing pipe. When liquid is discharged, accumulated liquid in the hose can be discharged into the liquid sealing pipe, the liquid can be automatically discharged under the condition that excessive accumulated liquid exists in the liquid sealing pipe, part of the accumulated liquid always exists in the liquid sealing pipe, and the liquid sealing effect is achieved. According to the differential pressure gauge, the function of automatically discharging the accumulated liquid in the transparent hose of the differential pressure gauge can be achieved through the automatic liquid discharging structure, and the phenomenon that the transparent hose of the differential pressure gauge is blocked by the accumulated liquid, and consequently reading distortion or differential pressure gauge damage is caused is effectively avoided.

Description

Technical Field

[0001] This application relates to the technical field of a new combined installation device for a differential pressure gauge, specifically a device for automatically draining liquid from a differential pressure gauge. Background Art

[0002] In industry, differential pressure gauges are often used to measure the pressure drop of equipment to display the magnitude of equipment resistance and determine whether the pressure drop is abnormal during equipment operation. For wet equipment such as a packed absorption tower, differential pressure gauges are also often used to measure the pressure drop of the packing. However, in conventional installations, the flexible hose of the differential pressure gauge is directly inserted into the position of the equipment to be measured.

[0003] As Figure 2 shown, the traditional differential pressure gauge device includes a differential pressure gauge 2 provided on a barrel 1, and transparent flexible hoses 3 communicating with the barrel 1 are connected to both the high-pressure interface and the low-pressure interface of the differential pressure gauge 2. It is found during operation that due to the spraying of wet equipment and liquid droplets entrained in the gas, after running for a period of time, more and more accumulated liquid will build up in the flexible hose of the differential pressure gauge, resulting in blockage of the flexible hose of the differential pressure gauge and distortion of the data displayed by the differential pressure gauge. When the accumulated liquid is corrosive, it will also cause the measuring diaphragm of the differential pressure gauge to be corroded, resulting in damage to the differential pressure gauge.

[0004] Therefore, this application provides a device for automatically draining liquid from a differential pressure gauge to solve the above problems. Utility Model Content

[0005] This application provides a device for automatically draining liquid from a differential pressure gauge, aiming to solve the problems in the background art that due to the spraying of wet equipment and liquid droplets entrained in the gas, after running for a period of time, more and more accumulated liquid will build up in the flexible hose of the differential pressure gauge, resulting in blockage of the flexible hose of the differential pressure gauge and distortion of the data displayed by the differential pressure gauge. When the accumulated liquid is corrosive, it will also cause the measuring diaphragm of the differential pressure gauge to be corroded, resulting in damage to the differential pressure gauge, etc.

[0006] To achieve the above object, this application provides the following technical solution: A device for automatically draining liquid from a differential pressure gauge includes a differential pressure gauge provided on the barrel, and transparent flexible hoses communicating with the barrel are connected to both the high-pressure interface and the low-pressure interface of the differential pressure gauge;

[0007] An automatic liquid discharging structure for discharging the accumulated liquid inside the transparent hose is symmetrically arranged on the barrel body. The automatic liquid discharging structure includes a liquid sealing pipe arranged on the barrel body and communicated with the transparent hose, a water replenishing pipe fixedly arranged at one end of the liquid sealing pipe close to the transparent hose and communicated with the liquid sealing pipe for introducing liquid, and a liquid discharging pipe fixedly arranged at the other end of the liquid sealing pipe far from the transparent hose. When discharging liquid, when there is accumulated liquid in the transparent hose, it will be discharged into the liquid sealing pipe. When there is too much accumulated liquid in the liquid sealing pipe, it will be automatically discharged. There will always be some accumulated liquid in the liquid sealing pipe, which plays a role of liquid seal. Through the automatic liquid discharging structure of the present application, the automatic discharging function of the accumulated liquid in the transparent hose of the differential pressure gauge can be realized, effectively avoiding the phenomenon that the transparent hose of the differential pressure gauge is blocked by the accumulated liquid, resulting in reading distortion or damage to the differential pressure gauge.

[0008] Preferably, in order to facilitate the control of the connection between the water replenishing pipe and the liquid sealing pipe: the water replenishing pipe is in a T shape, and both ends of the water replenishing pipe are respectively communicated with the two liquid sealing pipes. A first ball valve is fixedly installed at one end of the water replenishing pipe close to the liquid sealing pipe. When it is necessary to inject water into the interior of one of the water replenishing pipes, the corresponding first ball valve is opened and the other first ball valve is closed. At this time, the liquid inside the water replenishing pipe will flow into the liquid sealing pipe that needs to be replenished with liquid, which can reduce the use of pipelines and control the flow direction of the liquid inside the water replenishing pipe at the same time. When there is no liquid seal in the liquid sealing pipe, the first ball valve is opened to replenish tap water into the liquid sealing pipe to make the liquid sealing pipe full of tap water to form a liquid seal.

[0009] Preferably, in order to facilitate the control of the opening and closing of the liquid discharging pipe: a second ball valve is fixedly installed on the liquid discharging pipe. When it is necessary to discharge the liquid inside the liquid sealing pipe, the second ball valve is opened, and when the discharging is completed, the second ball valve is closed. Under normal circumstances, the second ball valve is opened. When there is too much accumulated liquid in the liquid sealing pipe, it will overflow automatically to avoid the accumulation of accumulated liquid.

[0010] Preferably, in order to facilitate the separate discharge of the liquid at the connection sections of the transparent hose with the differential pressure gauge and the barrel body: a three-way pipe communicated with the liquid sealing pipe is fixedly installed on the transparent hose. A third ball valve is fixedly installed at one end of the three-way pipe close to the differential pressure gauge, and a fourth ball valve is fixedly installed at one end of the three-way pipe close to the barrel body. When there is accumulated liquid in the transparent hose, the third ball valve and the fourth ball valve are opened, and the accumulated liquid will be discharged into the liquid sealing pipe. When there is too much accumulated liquid in the liquid sealing pipe, it will be automatically discharged.

[0011] Preferably, the liquid sealing pipe is in a U shape, the liquid discharging pipe is in an L shape, and the liquid sealing pipe and the liquid discharging pipe form an S-shaped elbow pipe. There will always be some accumulated liquid in the liquid sealing pipe, which plays a role of liquid seal.

[0012] Preferably, for the convenience of connecting the transparent hose to the barrel body: a flange blind plate is fixedly installed at the port of the communication pipe of the barrel body, and a through hole for inserting the transparent hose is provided on the flange blind plate. When it is necessary to measure the pressure difference of the barrel body: only need to insert one end of the transparent hose far away from the differential pressure gauge into the through hole on the flange blind plate, so that one end of the transparent hose extends into the inner space of the barrel body. When the equipment is running, a fan will be configured at the front end or the end of the equipment to provide positive pressure or negative pressure through the fan, so that the internal gas can flow, and the pressure loss value of the equipment at this time can be read on the differential pressure gauge. The two pressure tapping ports and the measuring port of the differential pressure gauge are connected through a transparent hose to measure the pressure loss value inside the barrel body of the measuring equipment.

[0013] Through the automatic liquid discharge structure of the present application, the automatic liquid discharge function of the liquid accumulation in the transparent hose of the differential pressure gauge can be realized, effectively avoiding the phenomenon that the transparent hose of the differential pressure gauge is blocked by the liquid accumulation, resulting in distorted readings or damage to the differential pressure gauge. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic structural diagram of a device for automatically discharging liquid of a differential pressure gauge;

[0015] Figure 2 It is a schematic structural diagram of a traditional differential pressure gauge device.

[0016] In the figure:

[0017] 1. Barrel body; 2. Differential pressure gauge; 3. Transparent hose; 4. Automatic liquid discharge structure; 41. Liquid sealing pipe; 42. Water replenishing pipe; 421. First ball valve; 43. Drain pipe; 431. Second ball valve; 5. Three-way pipe; 51. Third ball valve; 52. Second ball valve; 6. Flange blind plate; 61. Through hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0019] This embodiment provides a device for automatically discharging liquid of a differential pressure gauge, as Figure 1 shown, the device includes a differential pressure gauge 2 provided on the barrel body 1, and transparent hoses 3 communicating with the barrel body 1 are connected to both the high-pressure interface and the low-pressure interface of the differential pressure gauge 2;

[0020] Symmetrically arranged on the barrel body 1 is an automatic liquid drainage structure 4 for draining the accumulated liquid inside the transparent hose 3. The automatic liquid drainage structure 4 includes a liquid sealing pipe 41 arranged on the barrel body 1 and communicated with the transparent hose 3, a water replenishing pipe 42 fixedly arranged at one end of the liquid sealing pipe 41 close to the transparent hose 3 and communicated with the liquid sealing pipe 41 for introducing liquid, and a liquid drainage pipe 43 fixedly arranged at the other end of the liquid sealing pipe 41 away from the transparent hose 3. When draining liquid, when there is accumulated liquid in the transparent hose 3, it will be drained into the liquid sealing pipe 41. When there is too much accumulated liquid in the liquid sealing pipe 41, it will be automatically drained. There will always be some accumulated liquid in the liquid sealing pipe 41, which plays a role of liquid sealing. Through the automatic liquid drainage structure 4 of the present application, the automatic drainage function of the accumulated liquid in the transparent hose 3 of the differential pressure gauge 2 can be realized, effectively avoiding the phenomenon that the transparent hose 3 of the differential pressure gauge 2 is blocked by the accumulated liquid, resulting in distorted readings or damage to the differential pressure gauge 2.

[0021] Specifically, the water replenishing pipe 42 is in a T shape. The two ends of the water replenishing pipe 42 are respectively communicated with the two liquid sealing pipes 41. A first ball valve 421 is fixedly installed at one end of the water replenishing pipe 42 close to the liquid sealing pipe 41. When in use, first install the two first ball valves 421 on the water replenishing pipe 42. When it is necessary to inject water into the inside of one of the water replenishing pipes 42, open the corresponding first ball valve 421 and close the other first ball valve 421. At this time, the liquid inside the water replenishing pipe 42 will flow into the liquid sealing pipe 41 that needs to be replenished with liquid, which can reduce the use of pipelines and at the same time control the flow direction of the liquid inside the water replenishing pipe 42.

[0022] Specifically, a second ball valve 431 is fixedly installed on the liquid drainage pipe 43. When in use, first fixedly install the second ball valve 431 on the liquid drainage pipe 43; when it is necessary to drain the liquid inside the liquid sealing pipe 41, open the second ball valve 431, and close the second ball valve 431 when the drainage is completed.

[0023] Specifically, a three-way pipe 5 communicated with the liquid sealing pipe 41 is fixedly installed on the transparent hose 3. A third ball valve 51 is fixedly installed at one end of the three-way pipe 5 close to the differential pressure gauge 2, and a fourth ball valve 52 is fixedly installed at one end of the three-way pipe 5 close to the barrel body 1. When in use, first install the third ball valve 51 and the fourth ball valve 52 on the three-way pipe 5 respectively (corresponding Figure 1 as shown). Open the third ball valve 51 and the fourth ball valve 52. When there is accumulated liquid in the transparent hose 3, it will be drained into the liquid sealing pipe 41. When there is too much accumulated liquid in the liquid sealing pipe 41, it will be automatically drained; when the differential pressure gauge 2 needs to be disassembled and repaired, the third ball valve 51 and the fourth ball valve 52 can be all closed, which also avoids the internal gas of the equipment from being discharged from the transparent hose 3 and also avoids the outside air from entering the equipment internal, achieving the purpose of safe maintenance.

[0024] More specifically, the liquid sealing pipe 41 is in a U shape, and the liquid discharge pipe 43 is in an L shape. The liquid sealing pipe 41 and the liquid discharge pipe 43 form an S-shaped elbow pipe. There will always be some accumulated liquid in the liquid sealing pipe 41, which plays a role in liquid sealing.

[0025] It should be noted that: the liquid sealing pipe 41 is made of a transparent PVC pipe, and it is convenient to observe the liquid condition inside the liquid sealing pipe 41 through the transparent PVC pipe.

[0026] Specifically, a flange blind plate 6 is fixedly installed at the connecting pipe port of the barrel body 1. A through hole 61 for inserting the transparent hose 3 is opened on the flange blind plate 6. When it is necessary to measure the pressure difference of the barrel body 1: only need to insert one end of the transparent hose 3 far away from the differential pressure gauge 2 into the through hole 61 on the flange blind plate 6, so that one end of the transparent hose 3 extends into the internal space of the barrel body 1. When the equipment is running, a fan will be configured at the front end or the end of the equipment. By providing positive pressure or negative pressure through the fan, the internal gas can flow, so that the pressure loss value of the equipment can be read on the differential pressure gauge 2 at this time. The two pressure tapping ports and the measuring port of the differential pressure gauge 2 are connected through the transparent hose 3 to realize the measurement of the pressure loss value inside the barrel body 1 of the equipment.

[0027] When in use, when the water volume inside the liquid sealing pipe 41 is small: first close the third ball valve 51, open the first ball valve 421 and the second ball valve 431, and inject water into the liquid sealing pipe 41 through the water replenishing pipe 42 until the water overflows from the liquid discharge pipe 43 at one end of the liquid sealing pipe 41;

[0028] When it is necessary to drain the accumulated liquid inside the transparent hose 3: then close the first ball valve 421, open the second ball valve 431, the third ball valve 51 and the fourth ball valve 52, and the device starts to work. When there is accumulated liquid in the transparent hose 3, it will be drained into the liquid sealing pipe 41 through the three-way pipe 5. When there is too much accumulated liquid in the liquid sealing pipe 41, it will be automatically drained. There will always be some accumulated liquid in the liquid sealing pipe 41, which plays a role in liquid sealing;

[0029] When the differential pressure gauge 2 needs to be disassembled and repaired, the third ball valve 51 and the fourth ball valve 52 can be completely closed, which also avoids the discharge of the internal gas of the equipment from the transparent hose 3 and the entry of external air into the equipment, achieving the purpose of safe maintenance.

[0030] The above is only the preferred specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application, according to the technical solution and its concept of the present application, makes equivalent substitutions or changes, and should be covered by the protection scope of the present application.

Claims

1. A device for automatically draining liquid from a differential pressure gauge, comprising a differential pressure gauge (2) arranged on a barrel (1), and transparent hoses (3) communicating with the barrel (1) are connected to both the high-pressure interface and the low-pressure interface of the differential pressure gauge (2); It is characterized in that: An automatic liquid draining structure (4) for draining the accumulated liquid inside the transparent hose (3) is symmetrically arranged on the barrel (1). The automatic liquid draining structure (4) includes a liquid sealing pipe (41) arranged on the barrel (1) and communicating with the transparent hose (3), a water replenishing pipe (42) fixedly arranged at one end of the liquid sealing pipe (41) close to the transparent hose (3) and communicating with the liquid sealing pipe (41) for introducing liquid, and a liquid draining pipe (43) fixedly arranged at one end of the liquid sealing pipe (41) far from the transparent hose (3).

2. The device for automatically draining liquid of the differential pressure gauge according to claim 1, wherein: The water replenishing pipe (42) is in a T shape, and both ends of the water replenishing pipe (42) communicate with two liquid sealing pipes (41) respectively. A first ball valve (421) is fixedly installed at one end of the water replenishing pipe (42) close to the liquid sealing pipe (41).

3. The device for automatically draining liquid of the differential pressure gauge according to claim 1, wherein: A second ball valve (431) is fixedly installed on the liquid draining pipe (43).

4. The device for automatically draining liquid of the differential pressure gauge according to claim 1, wherein: A three-way pipe (5) communicating with the liquid sealing pipe (41) is fixedly installed on the transparent hose (3). A third ball valve (51) is fixedly installed at one end of the three-way pipe (5) close to the differential pressure gauge (2), and a fourth ball valve (52) is fixedly installed at one end of the three-way pipe (5) close to the barrel (1).

5. The device for automatically draining liquid of the differential pressure gauge according to claim 1, wherein: The liquid sealing pipe (41) is in a U shape, the liquid draining pipe (43) is in an L shape, and the liquid sealing pipe (41) and the liquid draining pipe (43) form an S-shaped elbow.

6. The device for automatically draining liquid of the differential pressure gauge according to claim 1, characterized in that: A flange blind plate (6) is fixedly installed at the communicating pipe port of the barrel (1), and a through hole (61) for inserting the transparent hose (3) is opened on the flange blind plate (6).

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