Pressure detection anti-blocking device for easy-to-crystallize pipeline

Abstract

The utility model belongs to the technical field of gas treatment devices, and particularly relates to a pressure detection anti-blocking device for an easy-to-crystallize pipeline, which comprises a first valve, a sight glass, a first connecting pipe, a second connecting pipe, a second valve, a first purging port, a third connecting pipe, a third valve, a teletransmission pressure gauge, a fourth connecting pipe, a fourth valve and a second purging port. The first valve is used for connecting a to-be-detected port of the easy-to-crystallize pipeline and the sight glass, one end of the first connecting pipe is used for connecting the sight glass, the other end is connected with the connecting pipe, and the other end of the fourth connecting pipe is sequentially connected with the fourth valve and the second purging port; an opening in the side wall of the first connecting pipe is connected with a second connecting pipe, and the other end of the second connecting pipe is sequentially connected with a second valve and a first purging opening; the side wall opening of the second connecting pipe is connected with the connecting pipe, and the other end of the third connecting pipe is sequentially connected with the third valve and the transmissible pressure gauge. Visibility of the blocking process is achieved, early discovery and effective purging operation are achieved, and stable operation and anti-blocking of the pressure tapping pipe are met.

Description

Technical Field

[0001] The utility model belongs to the technical field of coal gas processing devices, and in particular relates to a pressure detection and anti-blocking device for a crystallization-prone pipeline. Background Art

[0002] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the utility model, and shall not necessarily be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to ordinary technicians in this field.

[0003] In the production process of coking gas purification, each unit is equipped with an on-site pressure gauge or a remote pressure gauge to reflect the operation of the equipment. The change of the inlet and outlet pressure values ​​of the equipment is one of the characteristic values ​​that characterizes whether the equipment is running stably.

[0004] When the ambient temperature drops in winter, the naphthalene in the medium such as raw gas and naphthalene-containing VOCs in the gas purification process is easy to crystallize in the pipeline and pressure detection device, causing blockage, resulting in pressure detection failure, and unable to truly represent the pressure changes at the inlet and outlet of the equipment, which is prone to misoperation, causing adverse factors on production stability and posing safety hazards.

[0005] In order to solve the problem of blockage of the pressure detection device, the prior art CN207405193U discloses a smelting flue gas pressure taking device, in which the ash is cleaned by a cleaning rod or a soot blower, and the degree of cleaning depends on the operation level of the process personnel, and it is not easy to clean the dirt attached to the wall of the pressure branch pipe, and it is difficult to achieve complete cleaning. In addition, the pressure taking device can only judge whether the pressure taking device is blocked by the signal change of the transmitter, and cannot detect the accumulation of ash in time before the pressure change occurs. Utility Model Content

[0006] In order to solve the deficiencies of the prior art, the purpose of the utility model is to provide a pressure detection and anti-blocking device for a pipeline that is easy to crystallize. The utility model realizes the visibility and early detection of the blockage process by setting a sight glass, and realizes the operability and convenience of the purge by setting multiple connecting pipelines and purge ports, so as to meet the stable operation of the pipeline or device for conveying naphthalene-containing gas or other easy-to-crystallize media during the pressure detection process, ensure the anti-blockage of the pressure-taking pipe for pressure detection, and ensure the smooth passage.

[0007] In order to achieve the above purpose, the utility model is implemented through the following technical solutions:

[0008] In a first aspect, the utility model provides a pressure detection and anti-blocking device for a crystallization-prone pipeline, comprising a first valve, a sight glass, a first connecting pipe, a second connecting pipe, a second valve, a first purge port, a third connecting pipe, a third valve, a remote pressure gauge, a fourth connecting pipe, a fourth valve, and a second purge port;

[0009] One end of the first valve is used to be connected to the to-be-tested port of the easy-to-crystallize pipeline, and the other end is connected to one end of the sight glass, the other end of the sight glass is connected to one end of the first connecting pipe, the other end of the first connecting pipe is connected to one end of the fourth connecting pipe, and the other end of the fourth connecting pipe is connected to the fourth valve and the second purge port in sequence;

[0010] The side wall opening of the first connecting pipe is connected to one end of the second connecting pipe, and the other end of the second connecting pipe is connected to the second valve and the first purge port in sequence;

[0011] The side wall opening of the second connecting pipe is connected to one end of the third connecting pipe, and the other end of the third connecting pipe is connected to the third valve and the remote pressure gauge in sequence.

[0012] Preferably, the sight glass is a scraper-type sight glass.

[0013] Preferably, the diameter of the fourth connecting tube is smaller than that of the first connecting tube, and the fourth connecting tube is connected to the first connecting tube via a concentric reducer.

[0014] Preferably, the side wall opening of the first connecting tube is located in the middle of the first connecting tube.

[0015] Preferably, the included angle between the second connecting tube and the portion between the side wall opening of the first connecting tube and the end connected to the fourth connecting tube is an acute angle.

[0016] Further preferably, the included angle between the second connecting pipe and the portion between the side wall opening of the first connecting pipe and the end connected to the fourth connecting pipe is 45°.

[0017] Preferably, the angle between the third connecting pipe and the portion between the side wall opening of the second connecting pipe and the end connected to the second valve is an acute angle.

[0018] Further preferably, the included angle between the third connecting pipe and the portion between the side wall opening of the second connecting pipe and the end connected to the second valve is 45°.

[0019] Preferably, the first valve, the second valve, the third valve and the fourth valve are ball valves.

[0020] Preferably, the first purge port and the second purge port are used for externally connected steam pipelines for purging.

[0021] The beneficial effects achieved by one or more technical solutions of the above utility model are as follows:

[0022] The problem of blockage not being able to be detected in advance is solved by setting up a sight glass to make the blockage process visible and detect it in advance.

[0023] By arranging the first purge port and the second purge port on different connecting pipes, the stable operation of the whole device can be ensured by regular purge, and online purge can be carried out after blockage to stabilize production operation.

[0024] When the degree of crystal blockage increases, the pressure detection and anti-blocking device can also be unblocked by offline blowing. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0026] Figure 1 It is a schematic diagram of a pressure detection and anti-blocking device for a crystallization-prone pipeline of the present invention;

[0027] Among them, 1 is the first valve, 2 is the sight glass, 3 is the first connecting pipe, 4 is the second connecting pipe, 5 is the second valve, 6 is the first purge port, 7 is the third connecting pipe, 8 is the third valve, 9 is the remote pressure gauge, 10 is the concentric reducer, 11 is the fourth connecting pipe, 12 is the fourth valve, and 13 is the second purge port. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to more clearly understand the technical solution of the present invention, the technical solution of the present invention will be described in detail below in combination with specific embodiments and comparative examples.

[0029] Example 1

[0030] like Figure 1 As shown, a pressure detection and anti-blocking device for a crystallization-prone pipeline includes a first valve 1, a sight glass 2, a first connecting pipe 3, a second connecting pipe 4, a second valve 5, a first purge port 6, a third connecting pipe 7, a third valve 8, a remote pressure gauge 9, a fourth connecting pipe 11, a fourth valve 12, and a second purge port 13.

[0031] One end of the first valve 1 is used to be connected to the port to be inspected of the easy-to-crystallize pipeline, and the other end is connected to one end of the sight glass 2, the other end of the sight glass 2 is connected to one end of the first connecting pipe 3, the other end of the first connecting pipe 3 is connected to one end of the fourth connecting pipe 11 through a concentric reducer 10, the other end of the fourth connecting pipe 11 is connected to the fourth valve 12 and the second purge port 13 in sequence, and the diameter of the fourth connecting pipe 11 is smaller than that of the first connecting pipe 3.

[0032] The side wall opening of the first connecting pipe 3 is connected to one end of the second connecting pipe 4, and the angle between the second connecting pipe 4 and the part from the side wall opening of the first connecting pipe 3 to one end connected to the fourth connecting pipe 11 is 45°. The other end of the second connecting pipe 4 is connected to the second valve 5 and the first purge port 6 in sequence.

[0033] The side wall opening of the second connecting pipe 4 is connected to one end of the third connecting pipe 7. The angle between the third connecting pipe 7 and the part from the side wall opening of the second connecting pipe 4 to the end connected to the second valve 5 is 45°. The other end 7 of the third connecting pipe is connected to the third valve 8 and the remote pressure gauge 9 in sequence.

[0034] The first valve 1 , the second valve 5 , the third valve 8 and the fourth valve 12 are all ball valves.

[0035] During normal production, the pressure-taking pipe is inspected regularly, and whether it is blocked can be observed through the sight glass 2. If crystals are found on the sight glass, the second purge port 113 can be connected to an external steam pipeline, and the fourth valve 12 can be opened to perform the purge of the pressure-taking device to prevent crystals from accumulating and causing irreversible effects.

[0036] To ensure the stable operation of the whole device, the steam pipe connected to the first purge port 6 is purged regularly. When the ambient temperature rises and the medium to be detected does not crystallize, the first valve 1 is closed, the remote pressure gauge 9 is removed, and the third valve 8 is opened. Steam is purged at the first purge port 6 and the second purge port 13 respectively to ensure that the pressure taking device is unobstructed.

[0037] If the entire device is clogged due to crystals and online purging cannot solve the problem, close the first valve 1 and remove the remote pressure gauge 9, purge the entire device offline, and resume operation after the purging is completed.

[0038] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A pressure detection and anti-blocking device for a crystallization-prone pipeline, characterized in that: It includes a first valve, a sight glass, a first connecting pipe, a second connecting pipe, a second valve, a first purge port, a third connecting pipe, a third valve, a remote pressure gauge, a fourth connecting pipe, a fourth valve, and a second purge port; One end of the first valve is used to be connected to the to-be-tested port of the easy-to-crystallize pipeline, and the other end is connected to one end of the sight glass, the other end of the sight glass is connected to one end of the first connecting pipe, the other end of the first connecting pipe is connected to one end of the fourth connecting pipe, and the other end of the fourth connecting pipe is connected to the fourth valve and the second purge port in sequence; The side wall opening of the first connecting pipe is connected to one end of the second connecting pipe, and the other end of the second connecting pipe is connected to the second valve and the first purge port in sequence; The side wall opening of the second connecting pipe is connected to one end of the third connecting pipe, and the other end of the third connecting pipe is connected to the third valve and the remote pressure gauge in sequence.

2. The pressure detection and anti-blocking device according to claim 1, characterized in that: The sight glass is a scraper type sight glass.

3. The pressure detection and anti-blocking device according to claim 1, characterized in that: The fourth connecting pipe has a smaller diameter than the first connecting pipe, and the fourth connecting pipe is connected to the first connecting pipe via a concentric reducer.

4. The pressure detection and anti-blocking device according to claim 1, characterized in that: The side wall opening of the first connecting tube is located in the middle of the first connecting tube.

5. The pressure detection and anti-blocking device according to claim 1, characterized in that: The included angle between the second connecting pipe and the portion between the side wall opening of the first connecting pipe and the end connected to the fourth connecting pipe is an acute angle.

6. The pressure detection and anti-blocking device according to claim 5, characterized in that: The included angle between the second connecting pipe and the portion between the side wall opening of the first connecting pipe and the end connected to the fourth connecting pipe is 45°.

7. The pressure detection and anti-blocking device according to claim 1, characterized in that: The included angle between the third connecting pipe and the portion between the side wall opening of the second connecting pipe and the end connected to the second valve is an acute angle.

8. The pressure detection and anti-blocking device according to claim 7, characterized in that: The included angle between the third connecting pipe and the portion between the side wall opening of the second connecting pipe and the end connected to the second valve is 45°.

9. The pressure detection and anti-blocking device according to claim 1, characterized in that: The first valve, the second valve, the third valve and the fourth valve are ball valves.

10. The pressure detection and anti-blocking device according to claim 1, characterized in that: The first purge port and the second purge port are used for connecting to an external steam pipeline for purge.

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