Full-automatic steam pipeline testing device

Abstract

The utility model discloses a full-automatic steam pipeline testing device which comprises a testing steam pipeline, a pipeline purging assembly, a steam injection pressurizing assembly and a controller. The steam injection pressurizing assembly comprises an air inlet pipe, an exhaust pipe, a steam generator, a first valve, a second valve, a pressurizing pump and a first bypass pipe, the air inlet end and the air outlet end of the air inlet pipe are connected with the steam generator and the first valve correspondingly, and the air inlet end of the exhaust pipe is connected with the second valve; the two ends of the testing steam pipeline are detachably connected with the first valve and the second valve respectively. The booster pump is arranged on the first bypass pipe; and the pipeline purging assembly is connected with the air inlet pipe. According to the utility model, impurities such as foreign matters, iron slag and the like in the steam pipeline can be automatically purged before testing, the whole process of injection, pressurization, pressure maintaining, circular flow and pressure relief of steam during testing can be automatically completed, the sealing property, the pressure bearing property and the heat insulation property of the steam pipeline can be accurately and efficiently detected, and the reliable and normal use of the steam pipeline can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of steam pipeline testing, in particular to a full-automatic steam pipeline testing device. Background Art

[0002] Steam pipes have good mechanical and thermal insulation properties. Existing steam pipes are usually put into use directly after production. This will cause the following problems:

[0003] 1. Because the sealing, pressure bearing and thermal insulation of the steam pipeline were not tested, it was impossible to accurately judge whether the pressure bearing, thermal insulation and other performances of the pipeline met the standard requirements;

[0004] 2. Because foreign matter, iron slag and other impurities in the steam pipeline are not removed, these impurities will be damaged if they remain in the steam pipeline for a long time, affecting the normal steam transportation;

[0005] Therefore, in order to solve the above problems, it is necessary to develop a fully automatic steam pipeline testing device, which can automatically purge foreign matter, iron slag and other impurities in the steam pipeline before testing. During the test, the steam injection, pressurization, pressure maintenance, circulation flow and pressure relief are all completed automatically. It can accurately and efficiently test the sealing, pressure bearing and thermal insulation of the steam pipeline to ensure the reliability and normal use of the steam pipeline. Utility Model Content

[0006] In order to solve the above problems, the technical solutions adopted by the utility model are as follows:

[0007] A fully automatic steam pipeline testing device, characterized in that it comprises a test steam pipeline and a pipeline purge component and a steam injection and pressurization component connected to the test steam pipeline;

[0008] The steam injection and pressurizing assembly comprises an air inlet pipe, an exhaust pipe, a steam generator, a first valve, a second valve and a boosting pump, the air inlet end and the air outlet end of the air inlet pipe are respectively connected to the steam generator and the first valve, the air inlet end of the exhaust pipe is connected to the second valve, and the two ends of the test steam pipeline are respectively detachably connected to the first valve and the second valve;

[0009] The steam injection boosting assembly further comprises a first bypass pipe connected to the air intake pipe, and the boosting pump is arranged on the first bypass pipe;

[0010] Also included is a controller electrically connected to the steam generator, the first valve, the second valve and the booster pump;

[0011] The pipeline purge assembly is connected to the air intake pipe, and the connection point between the pipeline purge assembly and the air intake pipe is close to the first valve. The pipeline purge assembly is used to purge foreign matter, iron slag and other impurities in the test steam pipeline before testing.

[0012] Preferably, the steam injection and supercharging assembly further comprises a third valve connected to the intake pipe and a fourth valve connected to the exhaust pipe, and the steam injection and supercharging assembly further comprises a second bypass pipe having two ends respectively connected to the intake pipe and the exhaust pipe, wherein the connection point between the second bypass pipe and the intake pipe is located between the first valve and the third valve, and the connection point between the second bypass pipe and the exhaust pipe is located between the second valve and the fourth valve;

[0013] The second bypass pipe is provided with a circulation pump.

[0014] Preferably, a first pressure sensor is provided at one end of the air inlet pipe close to the first valve, and a second pressure sensor is provided on the test steam pipeline.

[0015] Preferably, a first temperature sensor is provided on the air intake pipe at a side close to the first pressure sensor, and a second temperature sensor is provided on the test steam pipe.

[0016] Preferably, a one-way valve is provided at one end of the second bypass pipe close to the end connected to the exhaust pipe, and the one-way valve is used to prevent impurities generated when the steam pipeline is purged and tested from entering the second bypass pipe.

[0017] Preferably, the pipeline purge assembly includes a connecting pipe, a fifth valve and a compressed air source, the two ends of the connecting pipe are respectively connected to the air inlet pipe and the compressed air source, and the fifth valve is arranged on the connecting pipe to control the opening and closing of the connecting pipe.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] The utility model can automatically purge foreign matter, iron slag and other impurities in the steam pipe before testing. During the test, the steam injection, pressurization, pressure maintenance, circulation flow and pressure relief are all completed automatically. The sealing, pressure bearing and insulation properties of the steam pipe can be accurately and efficiently tested to ensure the reliability and normal use of the steam pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Among them: test steam pipeline 1, pipeline purge assembly 2, steam injection boosting assembly 3, controller 4, circulation pump 5, first pressure sensor 6, second pressure sensor 7, first temperature sensor 8, second temperature sensor 9, one-way valve 10, connecting pipe 21, fifth valve 22, compressed gas source 23, second bypass pipe 30, intake pipe 31, exhaust pipe 32, steam generator 33, first valve 34, second valve 35, boosting pump 36, first bypass pipe 37, third valve 38, fourth valve 39. DETAILED DESCRIPTION

[0022] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the accompanying drawings. The accompanying drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0023] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right", "up", "down", "front", "rear" and similar expressions used herein are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0025] Below, in conjunction with the accompanying drawings and specific implementation methods, the utility model is further described:

[0026] like Figure 1 As shown, a fully automatic steam pipeline testing device comprises a testing steam pipeline 1 and a pipeline purge assembly 2 and a steam injection and pressurizing assembly 3 connected to the testing steam pipeline 1;

[0027] The steam injection and boosting assembly 3 comprises an air inlet pipe 31, an exhaust pipe 32, a steam generator 33, a first valve 34, a second valve 35 and a boosting pump 36. The air inlet end and the air outlet end of the air inlet pipe 31 are respectively connected to the steam generator 33 and the first valve 34, the air inlet end of the exhaust pipe 32 is connected to the second valve 35, and the two ends of the test steam pipeline 1 are respectively detachably connected to the first valve 34 and the second valve 35;

[0028] The steam injection boosting assembly 3 further includes a first bypass pipe 37 connected to the air intake pipe 31, and the boosting pump 36 is disposed on the first bypass pipe 37;

[0029] It also includes a controller 4 electrically connected to the steam generator 33, the first valve 34, the second valve 35 and the booster pump 36;

[0030] The pipeline purge assembly 2 is connected to the air intake pipe 31, and the connection point between the pipeline purge assembly 2 and the air intake pipe 31 is close to the first valve 34. The pipeline purge assembly 2 is used to purge foreign matter, iron slag and other impurities in the test steam pipeline 1 before testing.

[0031] In this embodiment, before the test, both ends of the test steam pipeline 1 are connected to the first valve 34 and the second valve 35, and then the controller 4 controls the first valve 34 and the second valve 35 to open, and starts the pipeline purge assembly 2 to discharge all foreign matter, iron slag and other impurities in the test steam pipeline 1. After completion, the pipeline purge assembly 2 is paused and the test is started;

[0032] During the test, the controller 4 controls the first valve 34 to open, the second valve 35 to close, and starts the steam generator 33, and then the steam generated by the steam generator 33 is injected into the test steam pipeline 1 according to the set requirements and time. After the steam injection is completed, the controller 4 starts the booster pump 36 to increase the air pressure in the test steam pipeline 1 to the target value. After the boosting is completed, the first valve 34 is closed, and the test steam pipeline 1 enters the pressure holding state to maintain the pressure for the set time. After the pressure holding is completed, the second valve 35 is controlled to open to release the pressure, and the pressure and temperature changes of the test steam pipeline 1 are monitored during the process;

[0033] In summary, the device only needs to be connected to the test steam pipe 1. Before the test, it can automatically purge foreign matter, iron slag and other impurities in the test steam pipe 1. During the test, the steam injection, pressurization, pressure maintenance and pressure relief are all completed automatically. The sealing and pressure bearing capacity of the steam pipe can be accurately and efficiently tested to ensure the reliability and normal use of the steam pipe.

[0034] In this embodiment, the first valve 34 and the second valve 35 are solenoid valves.

[0035] Further, such as Figure 1 As shown, the steam injection and supercharging assembly 3 further includes a third valve 38 connected to the intake pipe 31 and a fourth valve 39 connected to the exhaust pipe 32, and the steam injection and supercharging assembly 3 further includes a second bypass pipe 30 whose two ends are respectively connected to the intake pipe 31 and the exhaust pipe 32, and the connection point of the second bypass pipe 30 and the intake pipe 31 is located between the first valve 34 and the third valve 38, and the connection point of the second bypass pipe 30 and the exhaust pipe 32 is located between the second valve 35 and the fourth valve 39;

[0036] The second bypass pipe 30 is provided with a circulation pump 5 .

[0037] In this embodiment, when purging foreign matter, iron slag and other impurities in the test steam pipeline 1 , the third valve 38 is closed; the third valve 38 , the fourth valve 39 and the circulation pump 5 are electrically connected to the controller 4 .

[0038] In this embodiment, in order to further test the sealing and pressure bearing performance of the steam pipe 1, the steam needs to be circulated in the test steam pipe 1 before changing from the pressure maintaining state to the pressure releasing state;

[0039] After the pressure maintenance test, the controller 4 controls the first valve 34 and the second valve 35 to open, the third valve 38 and the fourth valve 39 to close, and starts the circulation pump 5 to allow the high-pressure steam to circulate in the test steam pipe 1 according to the set time, thereby simulating the sealing and pressure bearing properties of the test steam pipe 1 in the application scenario, and further ensuring the reliability of the steam pipe.

[0040] In this embodiment, the third valve 38 and the fourth valve 39 are solenoid valves.

[0041] Further, such as Figure 1 As shown, a first pressure sensor 6 is provided at one end of the air inlet pipe close to the first valve 34 , and a second pressure sensor 7 is provided on the test steam pipeline 1 .

[0042] In this embodiment, the first pressure sensor 6 and the second pressure sensor 7 are electrically connected to the controller 4. The first pressure sensor 6 is used to monitor the air pressure during steam injection and pressurization in real time, and control the steam generator 33 and the booster pump 36 to work according to the air pressure value, and the process is automatically controlled;

[0043] The second pressure sensor 7 is used to monitor the pressure value of the test steam pipeline 1 in the pressure maintaining state and the steam circulating flow state in real time, so as to judge the sealing and pressure bearing capacity of the test steam pipeline 1 according to the changes of the monitored pressure value.

[0044] Further, such as Figure 1 As shown, a first temperature sensor 8 is provided on one side of the air intake pipe close to the first pressure sensor 6 , and a second temperature sensor 9 is provided on the test steam pipeline 1 .

[0045] In this embodiment, the first temperature sensor 8 and the second temperature sensor 9 are electrically connected to the controller 4. The first temperature sensor 8 is used to monitor the temperature value of the steam in the intake pipe 31 during steam injection and pressurization in real time. According to the temperature value, the second pressure sensor 7 is used to monitor the temperature value of the steam in the test steam pipe 1 in the pressure maintaining state and the steam circulating flow state in real time, so as to judge the insulation of the test steam pipe 1 according to the difference in temperature values ​​monitored by the first temperature sensor 8 and the second temperature sensor 9.

[0046] Further, such as Figure 1 As shown, a one-way valve 10 is provided at one end of the second bypass pipe 30 close to the exhaust pipe 32 , and the one-way valve 10 is used to prevent impurities generated when the test steam pipeline 1 is purged from entering the second bypass pipe 30 .

[0047] In this embodiment, the above structure effectively prevents impurities from entering the test steam pipeline 1 during the steam circulation flow test.

[0048] Further, such as Figure 1 As shown, the pipeline purge assembly 2 includes a connecting pipe 21, a fifth valve 22 and a compressed air source 23. The two ends of the connecting pipe 21 are respectively connected to the air inlet pipe 31 and the compressed air source 23. The fifth valve 22 is arranged on the connecting pipe 21 to control the on-off of the connecting pipe 21.

[0049] In this embodiment, after the test steam pipeline 1 is installed, before the test, the controller 4 controls the fifth valve 22, the first valve 34, the second valve 35 and the fourth valve 39 to open, and the third valve 38 to close, and the compressed gas source 23 enters the test steam pipeline 1 from the connecting pipe 21 to purge foreign matter, iron slag and other impurities in the test steam pipeline 1, so that the impurities are quickly discharged from the test steam pipeline 1, thereby realizing automatic cleaning of the test steam pipeline 1 before the test.

[0050] In this embodiment, the fifth valve 22 is a solenoid valve.

[0051] Working principle:

[0052] Step 1 (installation of the test steam pipeline 1): connect the two ends of the test steam pipeline 1 to the first valve 34 and the second valve 35 respectively.

[0053] Step 2 (purging impurities in the pipeline before testing): The controller 4 controls the fifth valve 22, the first valve 34, the second valve 35 and the fourth valve 39 to open, and the third valve 38 to close. The compressed gas source 23 enters the test steam pipeline 1 from the connecting pipe 21 to purge foreign matter, iron slag and other impurities in the test steam pipeline 1, so that the impurities are quickly discharged from the test steam pipeline 1.

[0054] Step three (injecting steam into the test steam pipe 1): After the purging is completed, the controller 4 controls the first valve 34 and the third valve 38 to open, the second valve 35, the fourth valve 39 and the fifth valve 22 to close, and starts the steam generator 33. Then the steam generated by the steam generator 33 is injected into the test steam pipe 1 according to the set requirements and time, and the pressure and temperature of the steam output are monitored by the first temperature sensor 8 and the first pressure sensor 6.

[0055] Step 4 (increasing the air pressure of the test steam pipeline 1): After completing the steam injection, the controller 4 starts the booster pump 36. When the first pressure sensor 6 detects that the air pressure reaches the boost target value, the booster pump 36 is controlled to stop working.

[0056] Step 5 (pressure maintenance of the test steam pipeline 1): After the pressurization is completed, the controller 4 controls the first valve 34 to close, and monitors the pressure of the test steam pipeline 1 in real time through the second pressure sensor 7, and maintains the pressure according to the set time; when the pressure value is less than the pressure maintenance target value, the test steam pipeline 1 is unqualified, otherwise it is qualified; thus, the sealing and pressure bearing capacity of the test steam pipeline 1 are judged according to the monitored pressure changes;

[0057] At the same time, the thermal insulation of the test steam pipeline 1 is determined based on the difference in temperature values ​​monitored by the first temperature sensor 8 and the second temperature sensor 9 .

[0058] Step six (making steam circulate in the test steam pipe 1): After maintaining the pressure, the controller 4 controls the first valve 34 and the second valve 35 to open, the third valve 38, the fourth valve 39 and the fifth valve 22 to close, and starts the circulation pump 5 to make the high-pressure steam circulate in the test steam pipe 1 according to the set time. During the process, the pressure value of the test steam pipe 1 is monitored by the second pressure sensor 7, and the temperature value of the steam is monitored by the second temperature sensor 9, and judgment is made based on the monitored pressure and temperature values; thereby, the sealing and pressure bearing properties of the test steam pipe 1 in the application scenario can be simulated.

[0059] Step 7 (pressure relief): After completing the action in step 6, the controller 4 controls the second valve 35 and the fourth valve 39 to open, and the first valve 34, the third valve 38 and the fifth valve 22 to close, and the high-pressure steam is discharged from the exhaust pipe 32 until the pressure is relieved to the target pressure.

[0060] In summary, the device can automatically purge foreign matter, iron slag and other impurities in the steam pipe before testing. During the test, the steam injection, pressurization, pressure maintenance, circulation flow and pressure relief are all completed automatically. It can accurately and efficiently test the sealing, pressure bearing and insulation of the steam pipe to ensure the reliability and normal use of the steam pipe.

[0061] For those skilled in the art, various other corresponding changes and deformations can be made according to the technical solutions and concepts described above, and all of these changes and deformations should fall within the scope of protection of the claims of the utility model patent.

Claims

1. A fully automatic steam pipeline testing device, characterized in that: It includes a test steam pipeline and a pipeline purge assembly and a steam injection pressurization assembly connected to the test steam pipeline; The steam injection and pressurizing assembly comprises an air inlet pipe, an exhaust pipe, a steam generator, a first valve, a second valve and a boosting pump, the air inlet end and the air outlet end of the air inlet pipe are respectively connected to the steam generator and the first valve, the air inlet end of the exhaust pipe is connected to the second valve, and the two ends of the test steam pipeline are respectively detachably connected to the first valve and the second valve; The steam injection boosting assembly further comprises a first bypass pipe connected to the air intake pipe, and the boosting pump is arranged on the first bypass pipe; Also included is a controller electrically connected to the steam generator, the first valve, the second valve and the booster pump; The pipeline purge assembly is connected to the air intake pipe, and the connection point between the pipeline purge assembly and the air intake pipe is close to the first valve. The pipeline purge assembly is used to purge foreign matter and iron slag impurities in the test steam pipeline before testing.

2. A fully automatic steam pipeline testing device according to claim 1, characterized in that: The steam injection and supercharging assembly further includes a third valve connected to the intake pipe and a fourth valve connected to the exhaust pipe, and the steam injection and supercharging assembly further includes a second bypass pipe having two ends respectively connected to the intake pipe and the exhaust pipe, wherein the connection point between the second bypass pipe and the intake pipe is located between the first valve and the third valve, and the connection point between the second bypass pipe and the exhaust pipe is located between the second valve and the fourth valve; The second bypass pipe is provided with a circulation pump.

3. A fully automatic steam pipeline testing device according to claim 1, characterized in that: A first pressure sensor is disposed on one end of the air inlet pipe close to the first valve, and a second pressure sensor is disposed on the test steam pipeline.

4. A fully automatic steam pipeline testing device according to claim 3, characterized in that: A first temperature sensor is arranged on one side of the air intake pipe close to the first pressure sensor, and a second temperature sensor is arranged on the test steam pipeline.

5. A fully automatic steam pipeline testing device according to claim 2, characterized in that: A one-way valve is provided at one end of the second bypass pipe close to the end connected to the exhaust pipe, and the one-way valve is used to prevent impurities generated when the steam pipeline is purged and tested from entering the second bypass pipe.

6. The fully automatic steam pipeline testing device according to claim 1, characterized in that: The pipeline purge assembly includes a connecting pipe, a fifth valve and a compressed air source. The two ends of the connecting pipe are respectively connected to the air inlet pipe and the compressed air source. The fifth valve is arranged on the connecting pipe to control the connection and disconnection of the connecting pipe.

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