An on-line cleanable pipe sight glass device

Abstract

The present application belongs to the technical field of pipeline sight glass, in particular to a pipeline sight glass device capable of online cleaning, which is sequentially fixed with a lower connecting pipe, a lower connecting plate, a glass sight glass pipe, an upper connecting plate and an upper sleeve on the top of a pipeline loop, a connecting rod is arranged in the upper sleeve and the glass sight glass pipe from top to bottom, a glass pipe inner wall cleaning device is arranged at the end of the connecting rod in the glass sight glass pipe, an operating device for driving the connecting rod to move up and down is arranged at the top end of the connecting rod, a circulating pipe is communicated with one side of the upper sleeve, and the outlet of the circulating pipe is connected to the flow loop of the pipeline. The sight glass device has good online cleaning effect, ensures good clarity and observation effect of the inside of the sight glass, can be applied to the pipeline, has wide application range and high practicability, and ensures observation effect.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of pipeline sight glasses, and particularly relates to a pipeline sight glass device capable of being cleaned on line. BACKGROUND

[0002] In the prior art, as the petrochemical industry has higher and higher requirements for environmental protection, it is necessary to frequently check whether sewage in the pipeline is oil-carrying to avoid oil running accidents.

[0003] In use, the glass tube wall of the existing sight glass is easily contaminated, and must be disassembled for cleaning, which brings many inconveniences to use.

[0004] Therefore, it is urgent to develop a pipeline sight glass device capable of being cleaned on line and capable of guaranteeing clear transparency and observation effect of the sight glass. SUMMARY

[0005] The present application aims at overcoming the shortcomings of the prior art, and specifically discloses a pipeline sight glass device capable of being cleaned on line, which can achieve good cleaning effect by using a simple cleaning method, guarantee better clarity and observation effect of the sight glass, and can be applied to a pipeline, has wide application range and high practicability.

[0006] In order to achieve the above technical purpose, the present application is implemented according to the following technical scheme:

[0007] The pipeline sight glass device capable of being cleaned on line comprises a lower connecting pipe, a lower connecting plate, a glass sight glass tube, an upper connecting plate and an upper sleeve pipe which are sequentially fixed above a flow loop of a pipeline, a connecting rod is arranged in the upper sleeve pipe and the glass sight glass tube from top to bottom, a glass tube inner wall cleaning device is arranged at the end of the connecting rod in the glass sight glass tube, an operating device for driving the connecting rod to move up and down is arranged at the top end of the connecting rod, a circulating pipe is connected to one side of the upper sleeve pipe, and the outlet of the circulating pipe is connected to the flow loop of the pipeline.

[0008] As a further improvement of the above-mentioned technology, when the pipeline is full, the rear end of the circulating pipe is a curved water outlet pipe, the water outlet of the curved water outlet pipe is higher than the water inlet of the pipeline loop, and a water seal is formed.

[0009] As a further improvement of the above-mentioned technology, the cleaning device comprises an upper push rod, a cleaning ring and a lower sealing plate from top to bottom, the upper push rod is a cross-shaped fork rod fixed on the connecting rod and arranged above the cleaning ring, the cleaning ring is sleeved on the connecting rod, the lower sealing plate is fixed at the bottom end of the connecting rod, a groove is arranged at the edge of the cleaning ring, a sealing ring capable of tightly abutting against the inner wall of the glass sight glass tube is embedded in the groove, and the diameter of the lower sealing plate is greater than the diameter of the central hole of the cleaning ring.

[0010] As a further improvement of the above technology, a sealing cover is further fixed on the top of the upper sleeve, a containing cavity for storing lubricating oil is arranged in the sealing cover, the sealing cover is threadedly connected with the upper sleeve, a sealing rubber ring is arranged on the inner wall of the sealing cover and in contact with the upper sleeve, and a plurality of sealing rubber rings are arranged between the upper sleeve and the connecting rod.

[0011] As a further improvement of the above technology, a floating ball capable of floating at the oil-water mixing interface is arranged in the lower connecting pipe, the density of the floating ball is between the density of oil and the density of water, a stop rod for preventing the floating ball from escaping is arranged at the liquid inlet of the lower connecting pipe, the stop rod is fixed on one side wall of the lower connecting pipe, and the length of the stop rod is greater than the difference between the inner diameter of the lower connecting pipe and the diameter of the floating ball.

[0012] As a further improvement of the above technology, the inner diameter of the upper sleeve is greater than the inner diameter of the glass sight tube.

[0013] In the present application, the operating device has the following two structural forms:

[0014] Firstly, the operating device is a manual operating mode, which comprises an operating handle fixed on the top end of the connecting rod, a through hole is arranged at the bottom of the operating handle, a through hole is arranged at the top of the connecting rod, and the connecting rod is fixed by a hexagonal pin after penetrating through the through hole of the operating handle.

[0015] Secondly, the operating device is a pneumatic operating mode, which comprises a pneumatic cylinder fixed above the upper sleeve and comprising the top end of the connecting rod, a piston rod is arranged in the pneumatic cylinder, the bottom of the pneumatic cylinder is threadedly connected with the top of the upper sleeve, an air inlet is arranged at the bottom of the side wall of the pneumatic cylinder, a pressure relief port is arranged at the top of the pneumatic cylinder, the piston rod is sleeved on the top end of the connecting rod and fixedly connected with the top of the connecting rod, and a sealing rubber ring is arranged between the piston rod and the inner wall of the pneumatic cylinder.

[0016] In addition, in the present application, it is also applicable to the general form of the flow circulation loop, that is, it is applicable to the case that the flow circulation loop is not full, a buffer pipe is arranged below the lower connecting pipe, the buffer pipe is connected with the flow circulation loop through a connecting flange group, a sampling pipe is arranged in the buffer pipe from top to bottom and extends to the pipeline circulation loop, and the other end of the circulating pipe is in communication with the buffer pipe.

[0017] Compared with the prior art, the present application has the following beneficial effects:

[0018] (1) The pipeline sight device has a good cleaning effect, effectively guarantees the cleanliness, clarity and observability of the inner wall of the glass sight tube, and can accurately observe the condition of the medium in the pipeline.

[0019] (2) The pipeline sight glass device, the cleaning ring is sleeved on the connecting rod and can move between the upper push rod and the lower sealing plate, and is not rigidly connected with the connecting rod, so that the cleaning ring can better adapt to the inner wall of the glass sight tube, and ensure that the inner wall can be completely cleaned, and the cleaning effect is good;

[0020] (3) The pipeline sight glass device, the sealing cover at the top of the upper sleeve has a containing cavity for storing lubricating oil in the inside, has good lubricating effect, so that the connecting rod moves up and down easily and labor-saving, and the sealing cover, the upper sleeve and the connecting rod are all sealed by sealing rubber rings, so that liquid in the glass sight tube is prevented from leaking out, and good sealing effect is achieved;

[0021] (4) The pipeline sight glass device, because the float ball is arranged, the float ball can be in the oil-water mixture, and the demarcation surface of the oil-water mixture can be detected in real time through the fixed position of the float ball, so that the medium condition in the pipeline can be observed better;

[0022] (5) The pipeline sight glass device, the inner diameter of the upper sleeve can be greater than the inner diameter of the glass sight tube, so that the liquid in the glass sight tube will not be cracked when expanding in a low-temperature area, the upper sleeve with a large inner diameter provides sufficient expansion space, avoids the glass sight tube from being broken, and enhances the reliability;

[0023] (6) The pipeline sight glass device, the operating device for driving the connecting rod to move up and down can be manual or pneumatic, and can be applied to different use scenes, and has high practicability. BRIEF DESCRIPTION OF DRAWINGS

[0024] The application will be described in detail below with reference to the drawings and specific embodiments:

[0025] Figure 1 is a structural schematic view of the pipeline sight glass device of embodiment one (lowering state);

[0026] Figure 2 is a structural schematic view of the pipeline sight glass device of embodiment one (rising state);

[0027] Figure 3 is a structural schematic view of the upper cleaning device in embodiment one;

[0028] Figure 4 is a structural schematic view of the upper push rod in embodiment one;

[0029] Figure 5 is a structural schematic view of the cleaning ring in embodiment one;

[0030] Figure 6 is a structural schematic view of the connecting rod in embodiment one;

[0031] Figure 7 is the structure diagram of the sealing cover of the embodiment one of the present application;

[0032] Figure 8 is the structure diagram of the pipeline sight glass device of the embodiment two of the present application (lowering state);

[0033] Figure 9 is the structure diagram of the pipeline sight glass device of the embodiment two of the present application (rising state);

[0034] Figure 10 is the structure diagram of the pipeline sight glass device of the embodiment three of the present application (lowering state);

[0035] Figure 11 is the structure diagram of the pipeline sight glass device of the embodiment three of the present application (rising state);

[0036] Figure 12 is the structure diagram of the pipeline sight glass device of the embodiment four of the present application (lowering state);

[0037] Figure 13 is the structure diagram of the pipeline sight glass device of the embodiment four of the present application (rising state);

[0038] Figure 14 is the structure diagram of the pneumatic operating device of the embodiment four of the present application;

[0039] Figure 15 is the structure diagram of the cylinder of the embodiment four of the present application;

[0040] Figure 16 is the structure diagram of the piston rod of the embodiment four of the present application;

[0041] Figure 17 is the structure diagram of the sight glass device of the embodiment five of the present application. DETAILED DESCRIPTION

[0042] Embodiment one:

[0043] As Figure 1 , Figure 2As shown, the present invention discloses an online cleaning pipe sight glass device, wherein a lower connecting pipe 1, a lower connecting plate 2, a glass sight glass tube 3, an upper connecting plate 4, and an upper sleeve 5 are sequentially fixed above the flow loop 10 of the pipe. A connecting rod 6 is inserted from top to bottom inside the upper sleeve 5 and the glass sight glass tube 3. The upper connecting plate 4 and the lower connecting plate 2 are connected at one end by a lead screw 11. A glass tube inner wall cleaning device 7 is provided at the end of the connecting rod 6 inside the glass sight glass tube 3. An operating device 8 for driving the connecting rod 6 to move up and down is provided at the top end of the connecting rod 6. A circulation pipe 20 is connected to one side of the upper sleeve 5, and the outlet of the circulation pipe 20 is connected to the flow loop 10 of the pipe.

[0044] In this invention, when the pipe is full, the rear end of the circulation pipe 20 on the flow circuit 10 is a curved water outlet pipe 12, and the position of the water outlet O of the curved water outlet pipe 12 is higher than the position of the water inlet I of the flow circuit 10, forming a water seal.

[0045] like Figures 1 to 6 As shown, the cleaning device 7 includes, from top to bottom, an upper push rod 71, a cleaning ring 72, and a lower sealing plate 73. The upper push rod 71 is a cross-shaped fork fixed on the connecting rod 6 and positioned above the cleaning ring 72. The cleaning ring 72 is fitted onto the connecting rod 6. The lower sealing plate 73 is fixed to the bottom end of the connecting rod 6. A groove 721 is provided around the edge of the cleaning ring 72. A sealing ring 74 that can fit tightly against the inner wall of the glass sight glass tube 3 is embedded in the groove 721. The diameter of the lower sealing plate 73 is larger than the diameter of the central hole of the cleaning ring 72.

[0046] like Figure 1 , Figure 2 , Figure 6 As shown, a sealing cover 9 is also fixed on the top of the upper sleeve 5. The sealing cover 9 has a accommodating cavity 91 for storing lubricating oil. The sealing cover 9 is threadedly connected to the upper sleeve 5. A sealing rubber ring 30 is provided at the contact point between the inner wall of the sealing cover 9 and the upper sleeve 5. Multiple sealing rubber rings 40 are provided between the upper sleeve 5 and the connecting rod 6 for sealing.

[0047] In this embodiment, as Figure 1 , Figure 2 , Figure 7 As shown, the operating device 8 is a manual operation mode, which includes an operating handle 81 fixed to the top of the connecting rod 6. The operating handle 81 has a through hole at the bottom center, and the connecting rod 6 has a through hole 61 at the top. The connecting rod 6 passes through the through hole 811 of the operating handle 81 and is fixed by a hexagonal pin 82.

[0048] Example 2:

[0049] This embodiment is basically the same as Embodiment 1 above, except that:Figure 8 , Figure 9 As shown, the lower connecting pipe 1 is equipped with a float 50 that can suspend at the interface between oil and water. The density of the float 50 is between that of oil and water. A stop rod 60 is provided at the inlet of the lower connecting pipe 1 to prevent the float 50 from escaping. The stop rod 60 is fixed to one side wall of the lower connecting pipe 1, and its length is greater than the difference between the inner diameter of the lower connecting pipe 1 and the diameter of the float 50. Because the float 50 can suspend at the interface between oil and water, the interface can be detected in real time by observing the stop position of the float 50. This allows for better observation of the medium within the pipeline, and is particularly suitable for light-colored or transparent crude oil, such as kerosene.

[0050] Example 3:

[0051] This embodiment is basically the same as Embodiment 2 above, except that: Figure 10 , Figure 11 As shown, the inner diameter D1 of the upper sleeve 5 is larger than the inner diameter D2 of the glass sight glass tube 3. This ensures that the liquid inside the glass sight glass tube 3 will not burst when it expands in areas with low temperatures. The larger inner diameter of the upper sleeve 5 provides sufficient expansion space, preventing the glass sight glass tube 3 from breaking and enhancing its reliability.

[0052] Example 4:

[0053] This embodiment is basically the same as Embodiment 3 above, except that: Figures 12 to 17 As shown, the operating device 8' is pneumatically operated, comprising a cylinder 81' fixed above the upper sleeve 5 and containing the top end of the connecting rod 6 within it. The cylinder 81' has a piston rod 82' inside, and its bottom is threadedly connected to the top of the upper sleeve 5. An air inlet 811' is located at the bottom of the side wall of the cylinder 81', and a pressure relief port 812' is located at the top of the cylinder 81'. The piston rod 82' is fitted onto the top end of the connecting rod 6 and fixedly connected to it. A sealing ring is provided between the piston rod 82' and the inner wall of the cylinder 81'. The up-and-down movement of the piston rod 82' drives the up-and-down movement of the connecting rod 6, thereby achieving the up-and-down cleaning of the inner wall of the glass sight glass tube 3. It features good automation, can be applied to different usage scenarios, and is highly practical.

[0054] Example 5:

[0055] This embodiment is basically the same as Embodiment 3 above, except that: Figure 17As shown, the cleaning device described in the present application is also applicable to a simple flow circuit 10, and can be applicable to the case where the flow circuit 10 is not full, and the lower end of the lower connecting pipe 1 is provided with a buffer pipe 70, the buffer pipe 70 is connected with the flow circuit 10 through a connecting flange group, and a sampling pipe 80 is arranged in the buffer pipe 70 from top to bottom and extends to the flow circuit 10, and the other end of the circulating pipe 20 is communicated with the buffer pipe 50.

[0056] The present application is not limited to the above-described embodiments, and various modifications or changes can be made to the present application without departing from the spirit and scope of the present application, and the present application also means to include these modifications and changes if they belong to the scope of the claims of the present application and the equivalent technical scope.

Claims

1. A pipe sight glass device capable of online cleaning, characterized in that: A lower connecting pipe, a lower connecting plate, a glass sight glass tube, an upper connecting plate, and an upper sleeve are fixedly installed in sequence above the flow loop of the pipeline. A connecting rod is installed from top to bottom inside the upper sleeve and the glass sight glass tube. A glass tube inner wall cleaning device is provided at the end of the connecting rod inside the glass sight glass tube. An operating device for driving the connecting rod to move up and down is provided at the top of the connecting rod. A circulation pipe is connected to one side of the upper sleeve. The outlet of the circulation pipe is connected to the flow loop of the pipeline. When the pipeline loop is full, the rear end of the circulation pipe on the flow loop is a bent water outlet pipe. The outlet of the bent water outlet pipe is higher than the inlet of the flow loop, forming a water seal. The cleaning device comprises, from top to bottom, an upper push rod, a cleaning ring, and a lower sealing plate. The upper push rod is a cross-shaped fork fixed to the connecting rod and positioned above the cleaning ring. The cleaning ring is fitted onto the connecting rod. The lower sealing plate is fixed to the bottom end of the connecting rod. The cleaning ring has a groove along its edge, and a sealing ring that fits tightly against the inner wall of the glass sight glass tube is embedded in the groove. The diameter of the lower sealing plate is larger than the diameter of the central hole of the cleaning ring. The cleaning ring is fitted onto the connecting rod and can move between the upper push rod and the lower sealing plate. A sealing cover is also fixed to the top of the upper sleeve. The sealing cover has a cavity for storing lubricating oil. The sealing cover is threaded to the upper sleeve. A sealing ring is provided at the contact point between the inner wall of the sealing cover and the upper sleeve. Multiple sealing rings are provided between the upper sleeve and the connecting rod for sealing connection.

2. The online-cleanable pipe sight glass device according to claim 1, characterized in that: The lower connecting pipe is equipped with a float that can be suspended at the oil-water mixing interface. The density of the float is between that of oil and water. The inlet of the lower connecting pipe is equipped with a stop rod to prevent the float from escaping. The stop rod is fixed to one side wall of the lower connecting pipe, and the length of the stop rod is greater than the difference between the inner diameter of the lower connecting pipe and the diameter of the float.

3. The online-cleanable pipe sight glass device according to claim 1, characterized in that: The inner diameter of the upper sleeve is larger than the inner diameter of the glass sight glass tube.

4. The online-cleanable pipe sight glass device according to claim 1, characterized in that: The operating device is a manual operation mode, which includes an operating handle fixed to the top of the connecting rod.

5. The online-cleanable pipe sight glass device according to claim 1, characterized in that: The operating device is pneumatically operated and includes a cylinder fixed above the upper sleeve and containing the top end of the connecting rod. The cylinder has a piston rod inside, the bottom of the cylinder is threaded to the top of the upper sleeve, the bottom of the cylinder side wall has an air inlet, the top of the cylinder has a pressure relief port, the piston rod is sleeved on the top end of the connecting rod and fixedly connected to the top of the connecting rod, and a sealing ring is provided between the piston rod and the inner wall of the cylinder.

6. The online-cleanable pipe sight glass device according to claim 1, characterized in that: When the flow loop is not full, a buffer pipe is provided below the lower connecting pipe. The buffer pipe is connected to the flow loop through a connecting flange assembly. A sampling pipe is provided inside the buffer pipe extending from top to bottom onto the flow loop. The other end of the circulation pipe is connected to the buffer pipe.

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