CN112629834B - Pressure drop flow testing system and method for pipeline flame arrester test - Google Patents
Pressure drop flow testing system and method for pipeline flame arrester test Download PDFInfo
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- CN112629834B CN112629834B CN201910948557.0A CN201910948557A CN112629834B CN 112629834 B CN112629834 B CN 112629834B CN 201910948557 A CN201910948557 A CN 201910948557A CN 112629834 B CN112629834 B CN 112629834B
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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Abstract
The invention discloses a pressure drop flow testing system and a pressure drop flow testing method for testing a pipeline flame arrester, which belong to the technical field of performance testing of flame arresters. The invention realizes the pressure drop flow test in the mass label, keeps stable at different pressure drop numerical points, can manually adjust pressure drop parameters through the controller, reads corresponding flow and reduces measurement errors.
Description
Technical Field
The invention belongs to the technical field of performance test of flame arresters, and particularly relates to a pressure drop flow test system and a pressure drop flow test method for testing a pipeline flame arrestor.
Background
The pressure drop flow system of the flame arrester in the prior art cannot adjust the pressure drop flow value, and can only conduct measurement from a larger pressure storage space, pressure relief through the pipeline flame arrester immediately. There are several inconveniences: 1. the pressure cannot be controlled to reach the maximum value desired to be selected; 2. the pressure can not be regulated, and only the pressure can be rapidly read in the descending process, so that the error is larger; 3. the requirement on the pressure storage space is higher, because the pressure drop required to be measured is larger as the pipe diameter of the flame arrester is larger, the pressure requirement on the pressure storage space is higher, and thus potential safety hazards are also easily caused; 4. each position needs to be provided with fixed personnel to read data, the process is complex, and errors are easily caused.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides a pressure drop flow test system and a pressure drop flow test method for testing a pipeline flame arrester, which realize pressure drop flow test in a group mark, keep stable at different pressure drop numerical points, can manually regulate pressure drop parameters through a computer, read corresponding flow and reduce measurement errors; meanwhile, the pressure storage space can be canceled, air can be directly provided from an air compressor or a fan, and potential safety hazards are reduced; the manual error interference can be reduced by reading the data through the computer.
In order to solve the technical problems, the invention adopts the following technical scheme:
the pressure drop flow testing system for testing the pipeline flame arresters comprises an air supply device, a pressure control device, a pressure drop flow testing device and a controller, wherein the air supply device, the pressure control device and the pressure drop flow testing device are sequentially connected.
Further, the pressure control device comprises an electronic pressure controller, a pressure transmitter, a flowmeter, an integrating instrument and a thermocouple, the pressure drop flow testing device comprises a pipeline flame arrester and an electronic pressure gauge, and the air supply device, the electronic pressure controller, the pressure transmitter, the flowmeter and the pipeline flame arrester are sequentially connected through pipelines.
Further, the electronic pressure controller, the integrating instrument and the electronic pressure gauge are respectively connected with the controller.
Furthermore, pressure guiding pipes are arranged on two sides of the pipeline flame arrester, and the electronic pressure gauge is connected to the pressure guiding pipes and used for reading the pressure drop of the pipeline flame arrester.
Furthermore, the flowmeter, the pressure transmitter in front of the flowmeter and the thermocouple behind the flowmeter are respectively connected with an integrating instrument, and the integrating instrument is used for converting collected data into flow data under standard conditions and feeding back the flow data to the controller.
Further, the controller adjusts the pressure of the connecting pipeline behind the electronic pressure controller by adjusting the electronic pressure controller.
Further, a test tube section L1 is arranged in front of the inlet end of the pressure guiding tube arranged on two sides of the pipeline flame arrester, a test tube section L2 is arranged between the inlet end and the pipeline flame arrester, a test tube section L3 is arranged between the pipeline flame arrester and the outlet end of the pressure guiding tube, a test tube section L4 is arranged behind the outlet end of the pressure guiding tube, L1 is more than or equal to 10D, L2=2D, L3 is more than or equal to 10D, L4=2D, and D is the nominal diameter of the pipeline.
Further, the air supply device is an air compressor or a fan.
Further, the controller is a computer.
The pressure drop flow test system method for testing the pipeline flame arresters is carried out by using the pressure drop flow test system and comprises the following steps of:
(1) Opening an air supply device to convey air with pressure into the pipeline;
(2) The electronic pressure controller is regulated by the controller, the gas pressure passing through the electronic pressure controller is regulated, and air with stable pressure is provided for the subsequent pipeline;
(3) The data of the air in the pipeline measured by the pressure transmitter, the flowmeter and the thermocouple are converted in an integrating instrument, and finally, the flow result under the standard condition is fed back to the controller;
(4) The air in the pipeline passes through the front pressure guiding pipe and the rear pressure guiding pipe of the pipeline flame arrester, and the pressure result can be fed back to the controller through the electronic pressure gauge, so that the pressure drop data of the pipeline flame arrester can be read from the controller;
(5) And (3) adjusting the electronic pressure controller through the size setting of the pressure drop data in the controller, controlling the size of the pressure drop data, and reading the flow data after the flow data fed back to the controller by the integrating instrument are stable, so as to obtain corresponding data of each group of pressure drop flow required to be tested.
Further, preparation work is required before starting the test: comprises a zero calibration of a flowmeter and an electronic pressure gauge, and connection of a pipeline and a device.
Further, the air supply device is an air compressor or a fan, and is in a closed state before use.
Compared with the prior art, the invention has the advantages that:
(1) A pressure controller is arranged in front of a flame arrester of a pipeline, a flowmeter is arranged behind the pressure controller and is provided with a temperature and pressure compensation system, pressure guiding pipes are arranged on two sides of the pipeline flame arrester, and the pressure guiding pipes are connected with an electronic pressure meter to read the pressure drop of the pipeline flame arrester, so that pressure drop and flow reading can be realized when stable pressure values are realized, and measurement errors are reduced;
(2) The pressure storage space is canceled, and air can be directly provided from an air compressor or a fan, so that potential safety hazards are reduced;
(3) Pressure drop parameter adjustment can be manually set through a computer, stability is kept at different pressure drop numerical values, and corresponding flow is read at the same time; the manual error interference can be reduced by reading the data through the computer.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the system for testing pressure drop and flow rate according to the present invention.
In the figure, 1. An air supply device; 2. an electronic pressure controller; 3. a pressure transmitter; 4. a flow meter; 5. an integrating instrument; 6. a thermocouple; 7. a pipe flame arrester; 8. an electronic pressure gauge; 9. a computer; 10. and (5) a pressure guiding pipe.
Detailed Description
The invention will be further described with reference to the accompanying drawings and specific examples.
Example 1
As shown in fig. 1, a pressure drop flow rate testing system for testing a pipeline flame arrester comprises an air supply device 1, a pressure control device, a pressure drop flow rate testing device and a controller, wherein the air supply device 1, the pressure control device and the pressure drop flow rate testing device are connected in sequence. The air supply device 1 can be an air compressor or a fan and is mainly used for directly providing air for a system, eliminating a pressure storage space and reducing potential safety hazards; the controller is a computer 9 which,
the pressure control device comprises an electronic pressure controller 2, a pressure transmitter 3, a flowmeter 4, an integrating instrument 5 and a thermocouple 6. The pressure drop flow testing device comprises a pipeline flame arrester 7 and an electronic pressure gauge 8, wherein the air supply device 1, the electronic pressure controller 2, the pressure transmitter 3, the flowmeter 4 and the pipeline flame arrester 7 are sequentially connected through pipelines. Pressure guiding pipes 10 are arranged at two sides of the pipeline flame arrester 7, and an electronic pressure gauge 8 is connected to the pressure guiding pipes 10 and used for reading the pressure drop of the pipeline flame arrester 7; the electronic pressure controller 2, the integrating instrument 5 and the electronic pressure gauge 8 are respectively connected with a computer 9.
The flowmeter 4, the pressure transmitter 3 in front of the flowmeter 4 and the thermocouple 6 behind the flowmeter 4 are respectively connected with an integrating instrument 5, and the integrating instrument 5 is used for converting collected data into flow data under standard conditions and feeding back the flow data to the computer 9.
And, the computer 9 adjusts the pressure of the connecting pipe behind the electronic pressure controller 2 by adjusting the electronic pressure controller 2. The method realizes that parameter adjustment can be set manually through a computer 9, the stability is kept at different pressure drop numerical values, and the corresponding flow is read.
During test, a test pipe section L1 is arranged in front of the inlet end of the pressure guiding pipe 10 arranged on two sides of the pipeline flame arrester 7, a test pipe section L2 is arranged between the inlet end and the pipeline flame arrester 7, a test pipe section L3 is arranged between the pipeline flame arrester 7 and the outlet end of the pressure guiding pipe 10, and a test pipe section L4 is arranged behind the outlet end of the pressure guiding pipe 10. L1 is greater than or equal to 10D, L2=2D, L3 is greater than or equal to 10D, L4=2D, where D is the nominal diameter of the pipe.
Example 2
The embodiment provides a pressure drop flow testing system method for testing a pipeline flame arrester, which is performed by using the pressure drop flow testing system described in the embodiment 1, and comprises the following steps:
(1) Opening the air supply device 1 to convey air with pressure into the pipeline;
(2) The electronic pressure controller 2 is regulated through the computer 9, the gas pressure passing through the electronic pressure controller 2 is regulated, and air with stable pressure is provided for the subsequent pipeline, namely, the pressure of the connecting pipeline behind the electronic pressure controller 2 can be controlled by the electronic pressure controller 2 and regulated by the computer 9;
(3) The measured data of the air in the pipeline through the pressure transmitter 3, the flowmeter 4 and the thermocouple 6 are converted in the integrating instrument 5, and finally, the flow result under the standard condition is fed back to the computer 9, so that the flow data can be read from the computer 9;
(4) The air in the pipeline passes through the front and rear pressure guiding pipes 10 of the pipeline flame arrester 7, and the pressure result can be fed back to the computer 9 through the electronic pressure gauge 8, so that the pressure drop data of the pipeline flame arrester 7 can be read from the computer 9;
(5) And through the size setting of the pressure drop data in the computer 9, the electronic pressure controller 2 is regulated to control the size of the pressure drop data, and then after the flow data fed back to the computer 9 by the integrating instrument 5 are stable, the flow data is read to obtain corresponding data of various groups of pressure drop flow needed to be tested.
In addition, preparation work is required before starting the test: including calibration of the flow meter 4 and electronic pressure gauge 8, piping and connection of the devices. The air compressor or the fan is in a closed state before use.
Example 3
The pressure drop flow test of the pipeline flame arrester with the nominal diameter of the pipeline being DN50 is exemplified by:
preparation work before testing: the flow meter 4, the electronic pressure meter 8 were zeroed and the tubing and the apparatus were connected, wherein the tubing length l1=500 mm, l2=100 mm, l3=500 mm, l4=100 mm.
The test flow is as follows:
(1) Starting an air compressor or a fan to convey air with pressure into a pipeline, wherein the electronic pressure controller 2 is in a closed state at the beginning, namely, air cannot be supplied to a pipeline behind the electronic pressure controller 2;
(2) The computer 9 sets the pressure drop parameter to 100Pa and records the pressure drop data at this time. Regulating the electronic pressure controller 2 through the computer 9, regulating the pressure of the gas passing through the electronic pressure controller 2, and providing air with stable pressure for the subsequent pipeline;
(3) The measured data of the air in the pipeline through the pressure transmitter 3, the flowmeter 4 and the thermocouple 6 are converted in the integrating instrument 5, and finally, the flow result under the standard condition is fed back to the computer 9, the flow data when the pressure drop is 100Pa is read from the computer 9, and the flow data A1 at the moment is recorded;
repeating the steps (1) - (3), changing the pressure drop parameters in the step (2), and recording the corresponding flow data under different pressure drop data. For example, when the pressure drop parameter is set to 200Pa, the flow data is A2, and when the pressure drop parameter is set to 300Pa, the flow data is A3 … …, and corresponding flow data under different pressure drops of the pipeline flame arrestor can be tested.
In summary, the pressure controller is arranged in front of the flame arrester of the pipeline, the flowmeter is arranged behind the pressure controller and is provided with the temperature and pressure compensation system, the pressure guiding pipes are arranged on two sides of the flame arrester of the pipeline and are connected with the electronic pressure meter to read the pressure drop of the flame arrester of the pipeline, so that the pressure drop and the flow can be read when the pressure value is stable, and the pressure drop and the flow in the group mark can be tested. The pressure drop parameters can be adjusted manually by a computer while corresponding flow is read, and measurement errors and manual error interference are reduced.
It should be understood that the above description is not intended to limit the invention to the particular embodiments disclosed, but to limit the invention to the particular embodiments disclosed, and that various changes, modifications, additions and substitutions can be made by those skilled in the art without departing from the spirit and scope of the invention.
Claims (6)
1. A pressure drop flow test system for pipeline spark arrester test, its characterized in that: the pressure drop flow testing device comprises an air supply device, a pressure control device, a pressure drop flow testing device and a controller, wherein the air supply device, the pressure control device and the pressure drop flow testing device are sequentially connected;
the pressure control device comprises an electronic pressure controller, a pressure transmitter, a flowmeter, an integrating instrument and a thermocouple, the pressure drop flow testing device comprises a pipeline flame arrester and an electronic pressure gauge, and the air supply device, the electronic pressure controller, the pressure transmitter, the flowmeter and the pipeline flame arrester are sequentially connected through pipelines;
the electronic pressure controller, the integrating instrument and the electronic pressure gauge are respectively connected with the controller;
pressure guiding pipes are arranged on two sides of the pipeline flame arrester, and the electronic pressure gauge is connected to the pressure guiding pipes and used for reading the pressure drop of the pipeline flame arrester;
the flowmeter, the pressure transmitter in front of the flowmeter and the thermocouple behind the flowmeter are respectively connected with an integrating instrument, and the integrating instrument is used for converting collected data into flow data under standard conditions and feeding back the flow data to the controller;
the controller adjusts the pressure of a connecting pipeline behind the electronic pressure controller by adjusting the electronic pressure controller;
the test tube section L1 is arranged in front of the inlet end of the pressure guiding tube arranged on two sides of the pipeline flame arrester, the test tube section L2 is arranged between the inlet end and the pipeline flame arrester, the test tube section L3 is arranged between the pipeline flame arrester and the outlet end of the pressure guiding tube, the test tube section L4 is arranged behind the outlet end of the pressure guiding tube, L1 is more than or equal to 10D, L2=2D, L3 is more than or equal to 10D, L4=2D, and D is the nominal diameter of the pipeline.
2. The pressure drop flow test system for pipe flame arrestor testing as defined in claim 1, wherein: the air supply device is an air compressor or a fan.
3. The pressure drop flow test system for pipe flame arrestor testing as defined in claim 1, wherein: the controller is a computer.
4. A pressure drop flow testing system method for testing a pipe flame arrestor, characterized by using the pressure drop flow testing system of claim 1, comprising the steps of:
(1) Opening an air supply device to convey air with pressure into the pipeline;
(2) The electronic pressure controller is regulated by the controller, the gas pressure passing through the electronic pressure controller is regulated, and air with stable pressure is provided for the subsequent pipeline;
(3) The data of the air in the pipeline measured by the pressure transmitter, the flowmeter and the thermocouple are converted in an integrating instrument, and finally, the flow result under the standard condition is fed back to the controller;
(4) The air in the pipeline passes through the front pressure guiding pipe and the rear pressure guiding pipe of the pipeline flame arrester, the pressure result can be fed back to the controller through the electronic pressure gauge, and the pressure drop data of the pipeline flame arrester is read from the controller;
(5) And (3) adjusting the electronic pressure controller through the size setting of the pressure drop data in the controller, controlling the size of the pressure drop data, and reading the flow data after the flow data fed back to the controller by the integrating instrument are stable, so as to obtain corresponding data of each group of pressure drop flow required to be tested.
5. The method of pressure drop flow testing system for pipe flame arresters of claim 4, wherein preparation is required before beginning the test: comprises a zero calibration of a flowmeter and an electronic pressure gauge, and connection of a pipeline and a device.
6. The method of claim 4, wherein the air supply is an air compressor or blower and is turned off prior to use.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910948557.0A CN112629834B (en) | 2019-10-08 | 2019-10-08 | Pressure drop flow testing system and method for pipeline flame arrester test |
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| CN201910948557.0A CN112629834B (en) | 2019-10-08 | 2019-10-08 | Pressure drop flow testing system and method for pipeline flame arrester test |
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| JP5175521B2 (en) * | 2007-11-08 | 2013-04-03 | 株式会社東芝 | Lightning arrester discharge test device and lightning arrester discharge test method |
| CN201339812Y (en) * | 2008-12-12 | 2009-11-04 | 胜利油田胜利动力机械集团有限公司 | Novel air distributing device of fire retardant experiment of flame arrester in gas pipeline |
| CN203881698U (en) * | 2014-03-28 | 2014-10-15 | 广东产品质量监督检验研究院 | Device for detecting burning resistance and explosion resistance of flame arrester |
| CN204142475U (en) * | 2014-03-28 | 2015-02-04 | 广东产品质量监督检验研究院 | A kind of flame arrester for petroleum tank pressure loss and throughput pick-up unit |
| CN106248363A (en) * | 2016-08-26 | 2016-12-21 | 江苏远望仪器有限公司 | Pipeline spark arrester detection device |
| CN106290018A (en) * | 2016-10-12 | 2017-01-04 | 南京理工大学 | Spark arrester explosion arrestment method for testing performance |
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Effective date of registration: 20230517 Address after: Yanan City, Shandong province Qingdao City three road 266071 No. 218 Patentee after: CHINA PETROLEUM & CHEMICAL Corp. Patentee after: Sinopec Safety Engineering Research Institute Co.,Ltd. Address before: Yanan City, Shandong province Qingdao City three road 266071 No. 218 Patentee before: CHINA PETROLEUM & CHEMICAL Corp. Patentee before: SINOPEC Research Institute OF SAFETY ENGINEERING |
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