CN111853543A - Natural gas calorific capacity dynamic monitoring adjusting device - Google Patents
Natural gas calorific capacity dynamic monitoring adjusting device Download PDFInfo
- Publication number
- CN111853543A CN111853543A CN202010437620.7A CN202010437620A CN111853543A CN 111853543 A CN111853543 A CN 111853543A CN 202010437620 A CN202010437620 A CN 202010437620A CN 111853543 A CN111853543 A CN 111853543A
- Authority
- CN
- China
- Prior art keywords
- lng
- gas
- sampler
- input pipeline
- transmitter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 239000003345 natural gas Substances 0.000 title claims abstract description 22
- 238000012544 monitoring process Methods 0.000 title claims abstract description 15
- 239000007789 gas Substances 0.000 claims abstract description 61
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 56
- 238000002156 mixing Methods 0.000 claims abstract description 40
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 27
- 239000006200 vaporizer Substances 0.000 claims abstract description 14
- 239000002808 molecular sieve Substances 0.000 claims abstract description 9
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims abstract description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000001301 oxygen Substances 0.000 claims abstract description 7
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 7
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims description 34
- 230000020169 heat generation Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 150000001335 aliphatic alkanes Chemical class 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims 1
- 239000003949 liquefied natural gas Substances 0.000 description 48
- 239000002737 fuel gas Substances 0.000 description 17
- 230000001105 regulatory effect Effects 0.000 description 9
- 238000002485 combustion reaction Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- -1 Shaangan Ning gas Chemical compound 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000013178 mathematical model Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
- F17D1/065—Arrangements for producing propulsion of gases or vapours
- F17D1/07—Arrangements for producing propulsion of gases or vapours by compression
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/12—Arrangements for supervising or controlling working operations for injecting a composition into the line
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/18—Arrangements for supervising or controlling working operations for measuring the quantity of conveyed product
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/005—Protection or supervision of installations of gas pipelines, e.g. alarm
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a natural gas calorific capacity dynamic monitoring and adjusting device, wherein a nitrogen input pipeline is provided with a compressor, a filter, an electric valve, a molecular sieve adsorber, an oxygen analyzer, a pressure regulator, a pressure transmitter, an ultrasonic flowmeter, a temperature transmitter, a flow regulator, a check valve and other equipment. The LNG input pipeline is provided with an LNG storage tank, an electric valve, an LNG vaporizer, a filter, a pressure regulator, a pressure transmitter, an ultrasonic flowmeter, a temperature transmitter, a flow regulator, a check valve, a sampler and other equipment. The pre-blending part comprises: a pressure transmitter, an ultrasonic flowmeter, a temperature transmitter and a sampler; the blended part comprises: a pressure transmitter, an ultrasonic flowmeter, a temperature transmitter and a sampler; the problem of quick, dynamic mixing add the gas is solved, the technical requirement that reaches fine setting gas calorific capacity through the micro-adjustment main gas composition has been satisfied, the safety risk that has probably appeared in the gas mixture has been avoided.
Description
Technical Field
The invention relates to the field of gas, in particular to a device for dynamically monitoring and adjusting the calorific value of natural gas.
Background
In the domestic gas industry, as the sources of natural gas are more and more, in addition to pipeline natural gas such as Shaangan Ning gas, Tukumamestan gas, Russia gas and the like, Liquefied Natural Gas (LNG), new gas sources such as coal gas, landfill gas, biomass gas and the like continuously enter, and the gas quality compositions of the gas sources are different, and the heating values are also different. The heating value of the town natural gas in different seasons and different time periods is continuously changed due to multiple gas sources, but the gas equipment is operated safely and stably, and the heating value of the gas is required to be stable and stabilized within a certain range due to low emission of nitrogen oxides; in addition, with the implementation of natural gas energy metering in the future, the heating value of town natural gas is one of the necessary conditions, because it is not practical to install a large number of high-price online gas chromatographs in a complex town pipe network, so that the heating value of town natural gas is necessarily stabilized, and when the heating value of gas is too low, LNG or LPG with high heating value should be blended into the gas; if the calorific value of the fuel gas is too high, nitrogen gas, air, or the like having a low calorific value should be blended. Therefore, how to dynamically monitor the change of the calorific value of the main gas source and accurately control the amount of the mixed gas is necessary, but no special dynamic natural gas calorific value adjusting device is available at present. Meanwhile, the fuel gas belongs to explosive gas, and how to ensure the safety of the blending process is also very important research content.
The gas mixing device is used for dynamically monitoring the gas heating amount, is quickly, accurately and uniformly adjusted, does not exceed a set range, solves the problem of quickly and dynamically mixing and adding gas, meets the technical requirement of finely adjusting the gas heating amount by micro-adjusting the main gas source components, and avoids the safety risk possibly occurring in gas mixing.
Disclosure of Invention
The invention aims to provide a device for dynamically monitoring and adjusting the calorific value of natural gas, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a natural gas calorific capacity dynamic monitoring adjusting device is characterized in that: the device consists of key equipment, namely a dynamic mixer, an electric valve, a nitrogen input pipeline, an LNG input pipeline, a gas main pipeline, an online gas chromatograph, a PLC control box and a computer, wherein the electric valve is internally provided with two electric valves for controlling the switch of a mixing pipeline, and the main equipment on the nitrogen input pipeline comprises: compressor, filter, electric valve, molecular sieve adsorber, oxygen analysis appearance, voltage regulator, pressure transmitter, ultrasonic flowmeter, temperature transmitter, flow regulator and check valve etc. equipment, the main equipment on the LNG input pipeline includes: LNG storage tank, electric valve, LNG vaporizer, filter, voltage regulator, pressure transmitter, ultrasonic flowmeter, temperature transmitter, flow regulator, check valve and equipments such as sampler, the gas main line divide into the mixing front part again and mixes the back part, and the mixing front part includes: a pressure transmitter, an ultrasonic flowmeter, a temperature transmitter and a sampler; the blended part comprises: the system comprises a pressure transmitter, an ultrasonic flowmeter, a temperature transmitter and a sampler, wherein the calorific value is monitored by regularly collecting components at the sampler. When the heating value is in the set range, the heating value is in a non-blending state; when the heating value is lower than the set range, starting a program for inputting high-heating-value LNG; when the heat generation is higher than the set range, the process of inputting nitrogen is started.
Furthermore, the molecular sieve adsorber 4 in the nitrogen input pipeline is replaced by an air input pipeline.
Furthermore, an LNG storage tank and an LNG vaporizer in the LNG input pipeline are eliminated, and an LPG storage tank, an LPG vaporizer and other equipment are added, so that the LNG storage tank and the LPG vaporizer are changed into the LPG input pipeline.
Furthermore, an LNG storage tank and an LNG vaporizer in the LNG input pipeline are eliminated, and the LNG storage tank and the LNG vaporizer are changed into other high-heat-value alkane input pipelines.
Compared with the prior art, the invention has the following beneficial effects:
the gas mixing device is used for dynamically monitoring the gas heating amount, is quickly, accurately and uniformly adjusted, does not exceed a set range, solves the problem of quickly and dynamically mixing and adding gas, meets the technical requirement of finely adjusting the gas heating amount by micro-adjusting the main gas source components, and avoids the safety risk possibly occurring in gas mixing.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in 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 it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a device for dynamically monitoring and adjusting a calorific value of natural gas according to an embodiment of the present invention;
reference numerals:
1 compressor, 2 filters (including 2a, 2 b), 3 electric valves (including 3a, 3b, 3c and 3 d), molecular sieve adsorbers (4), oxygen analyzers (5), temperature transmitters (6 a, 6b, 6c and 6 d), pressure regulators (7 a and 7 b), pressure transmitters (9 a, 9b, 9c and 9 d), ultrasonic flow meters (8 a, 8b, 8c and 8 d), flow regulators (10 a and 10 b), check valves (11 a and 11 b), dynamic mixers (12), samplers (13 a, 13b and 13 c), on-line gas chromatographs (14), LNG vaporizers (15), PLC control box control (16), computers (17), LNG storage tanks (18) and other equipment.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "top", "bottom", "one side", "the other side", "front", "back", "middle part", "inside", "top", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1, according to the technical solution of the embodiment of the present invention: the overall structure of the natural gas heating value dynamic monitoring and adjusting device is shown in the attached drawing and mainly comprises the following parts: the dynamic mixer 12 (which is internally provided with two electric valves 3b and 3c for controlling the switch of a blending pipeline, a nitrogen input pipeline 20, an LNG input pipeline 21, a gas main pipeline 19, an online gas chromatograph 14, a PLC control box 16 and a computer 17, wherein the nitrogen input pipeline 20 is provided with a compressor 1, a filter 2a, an electric valve 3a, a molecular sieve adsorber 4, an oxygen analyzer 5, a pressure regulator 7a, a pressure transmitter 9a, an ultrasonic flowmeter 8b, a temperature transmitter 6b, a flow regulator 10a, a check valve 11a and other equipment, the LNG input pipeline 21 is provided with an LNG storage tank 18, an electric valve 3d, an LNG vaporizer 15, a filter 2b, a pressure regulator 7b, a pressure transmitter (9 d), an ultrasonic flowmeter 8d, a temperature transmitter 6d, a flow regulator 10b, a check valve 11b, a sampler 13b and other equipment, and the gas main pipeline 19 is further divided into a front blending part and a blended part, the pre-blending part comprises: a pressure transmitter 9b, an ultrasonic flow meter 8c, a temperature transmitter 6c and a sampler 13 a; the blended part comprises: a pressure transmitter 9c, an ultrasonic flow meter 8a, a temperature transmitter 6a and a sampler 13 c.
The principle of the natural gas heating value dynamic monitoring and adjusting device is as follows:
the on-line gas chromatograph 14 is controlled by a PLC control box 16, and can be respectively communicated with the samplers 13a, 13b and 13c at regular time according to instructions of a computer 17 to collect and analyze corresponding positions (the natural gas before blending, the gasified LNG and the fuel gas components of the natural gas after blending, and then the on-line gas chromatograph 14 uploads the measured data to the computer 17 to calculate the fuel gas heating value.
When the calorific value of the primary pipeline sampler 13a before blending is lower than the set range, starting a program for inputting high calorific value LNG, closing the electric valve 3b and the electric valve 3a, sequentially opening the electric valve 3d and the electric valve 3c, testing the calorific value of the LNG pipeline 21 sampler 13b, injecting the gasified LNG into the gas primary pipeline 19 through the dynamic mixer 12 according to the blending flow calculated by the computer 17, and adjusting the LNG flow to the flow calculated by the computer 17 program through the flow adjusting valve 10b and the ultrasonic flow meter 8 d. Testing the heat productivity of the gas main pipeline sampler 13c after the set time is exceeded, and if the heat productivity is still lower than the set range, adjusting the flow regulating valve 10b to increase the LNG flow until the heat productivity of the sampler 13c is in the set range; if the calorific value of the sampler 13c is higher than the set range, the flow rate control valve 10b is adjusted to reduce the LNG flow rate until the calorific value of the sampler 13c is within the set range.
When the heat output of the main pipeline sampler 13a before mixing is higher than the set range, a program for inputting nitrogen is started, the electric valve 3c and the electric valve 3d are closed, the electric valve 3a and the electric valve 3b are opened in sequence, the nitrogen is injected into the fuel gas main pipeline 19 through the dynamic mixer 12 according to the mixing flow calculated by the computer 17, and the flow regulating valve 10a and the ultrasonic flowmeter 8b regulate the flow of the nitrogen to the flow calculated by the program of the computer 17. After the set time is exceeded, testing the heat productivity of the gas main pipeline sampler 13c, and if the heat productivity is still higher than the set range, adjusting the flow regulating valve 10a to increase the nitrogen flow; if the amount of heat generation of the sampler 13c is lower than the set range, the flow rate adjustment valve 10a is adjusted to reduce the flow rate of nitrogen until the amount of heat generation of the sampler 13c falls within the set range.
The mathematical model is as follows:
1 volume heating value before mixing of fuel gas in main pipeline
The volume heating value before gas blending in the main pipeline is calculated according to the formula:
⑴
in the formula:
xj-the mole fraction of component j in the fuel gas;
at the combustion temperature t1, the metering temperature t2 and the pressure p2, the volumetric heating value of the fuel gas in the main pipeline before mixing is obtained;
-at the metering temperature t2 and pressure p2, the compression factor of the gas in the main line before blending;
-the desired gas volume heating value of fuel gas component j at combustion temperature t1, metering temperature t2 and pressure p 2;
2 volume heating value of fuel gas in main pipeline after nitrogen mixing
The volume calorific capacity of gas is two calculations according to the formula in the main line behind the mixing nitrogen gas:
⑵
in the formula:
the volume heating value of the fuel gas mixed with the nitrogen in the main pipeline is measured at the combustion temperature t1, the metering temperature t2 and the pressure p 2;
the compression factor of the fuel gas after nitrogen blending in the main pipeline is measured at the temperature t2 and the pressure p 2;
qN2 — volumetric flow rate of nitrogen blend;
qNG — volumetric flow of gas in the main pipeline.
3 volume heating value of fuel gas in main pipeline after mixing LNG
The volume heating value of the fuel gas in the main pipeline after the LNG is mixed is calculated according to a formula:
⑶
in the formula:
-the mole fraction of fuel gas component j in the LNG;
the volume heating value of the fuel gas mixed with the LNG in the main pipeline is measured at the combustion temperature t1, the metering temperature t2 and the pressure p 2;
the compression factor of the fuel gas after blending the LNG in the main pipeline is measured at the temperature t2 and the pressure p 2;
qLNG-volumetric flow of blended LNG
The working principle is as follows:
by means of the above-mentioned solution of the present invention,
1. in a non-blended state: the electric valve 3a, the electric valve 3b, the electric valve 3c and the electric valve 3d are closed. The compressor 1, the molecular sieve adsorber 4, the oxygen analyzer 5, the flow regulator 10a and other devices on the nitrogen input pipeline 20 are in a standby state. The LNG vaporizer 15, the flow regulator 10b, and the like on the LNG feed line 21 are in a standby state. The computer 17 periodically samples the sampler 13a on the main line 19 via the PLC control box 16, performs a component analysis using the on-line gas chromatograph 14, calculates the calorific value of the gas, compares the calorific value with a designed calorific value range, and determines whether the calorific value is out of range. If the calculated heat output is higher than the design range, starting a nitrogen mixing mode; if the calculated heating value is lower than the design range, the blended LNG mode is started.
2. Blending nitrogen mode: the electric valve 3c and the electric valve 3d are closed, the electric valve 3a and the electric valve 3b are opened in sequence, the compressor 1, the molecular sieve adsorber 4, the oxygen analyzer 5, the flow regulator 10a and other equipment are started, nitrogen is injected into the gas main pipeline 19 through the dynamic mixer 12, and the flow of the nitrogen is regulated to the flow calculated by the computer 17 program through the flow regulating valve 10a and the ultrasonic flow meter 8 b. After the set time has elapsed, the samplers 13a and 13c of the gas main line 19 are sampled again, and the respective heating amounts are calculated. If the calorific value at the sampler 13a is still higher than the set range and the calorific value at the sampler 13c is also higher than the set range, the flow regulating valve 10a is adjusted to increase the nitrogen flow until the calorific value at the sampler 13c is within the set range; if the calorific value at the sampler 13a is still higher than the set range and the calorific value at the sampler 13c is lower than the set range, the flow regulating valve 10b is adjusted to reduce the nitrogen flow until the calorific value at the sampler 13c is within the set range; if the calorific value at the sampler 13a is already within the set range, entering a non-blending state; if the calorific value at the sampler 13a has fallen below the set range, the blended LNG state is entered.
3. Blending LNG mode: the electric valve 3b and the electric valve 3a are closed, the electric valve 3d and the electric valve 3c are opened in sequence, the LNG vaporizer 15, the flow regulator 10b and other equipment are started, the heat productivity of the LNG pipeline 21 sampler 13b is tested, the gasified LNG is injected into the gas main pipeline 19 through the dynamic mixer 12 according to the mixing flow calculated by the computer 17, and the flow regulator 10b and the ultrasonic flowmeter 8d regulate the LNG flow to the flow calculated by the computer 17 program. After the set time has elapsed, the samplers 13a and 13c of the gas main line 19 and the sampler 13b of the LNG import line 21 are sampled again, and the heating values are calculated respectively.
If the calorific value at the sampler 13a is lower than the set range and the calorific value at the sampler 13c is also lower than the set range, the flow regulating valve 10b is adjusted to increase the LNG flow until the calorific value at the sampler 13c is within the set range;
4. if the calorific value at the sampler 13a is lower than the set range and the calorific value at the sampler 13c is higher than the set range, the flow regulating valve 10b is adjusted to reduce the flow of the LNG until the calorific value at the sampler 13c is within the set range; if the calorific value at the sampler 13a is already within the set range, entering a non-blending state; if the calorific value at the sampler 13a has become higher than the set range, the nitrogen-blended state is entered.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (4)
1. A natural gas calorific capacity dynamic monitoring adjusting device is characterized in that: the device consists of key equipment, namely a dynamic mixer (12), electric valves (3 b and 3 c) for controlling the switch of a mixing pipeline, a nitrogen input pipeline (20), an LNG input pipeline (21), a gas main pipeline (19), an online gas chromatograph (14), a PLC control box (16) and a computer (17), wherein the main equipment on the nitrogen input pipeline (20) comprises a compressor (1), a filter (2 a), the electric valves (3 a), a molecular sieve adsorber (4), an oxygen analyzer (5), a pressure regulator (7 a), a pressure transmitter (9 a), an ultrasonic flowmeter (8 b), a temperature transmitter (6 b), a flow regulator (10 a) and a check valve (11 a), and the main equipment on the LNG input pipeline (21) comprises an LNG storage tank (18), an electric valve (3 d), an LNG vaporizer (15), a liquid level sensor and a, Equipment such as filter (2 b), voltage regulator (7 b), pressure transmitter (9 d), ultrasonic flowmeter (8 d), temperature transmitter (6 d), flow regulator (10 b), check valve (11 b) and sampler (13 b), gas main line (19) divide into again and mix preceding part and mix the back part, and the preceding part of mixing includes: a pressure transmitter (9 b), an ultrasonic flowmeter (8 c), a temperature transmitter (6 c) and a sampler (13 a); the blended part comprises: a pressure transmitter (9 c), an ultrasonic flowmeter (8 a), a temperature transmitter (6 a) and a sampler (13 c), which monitors the calorific value by collecting the components at the sampler (13 a) at a fixed time;
When the heating value is in the set range, the heating value is in a non-blending state; when the heating value is lower than the set range, starting a program for inputting high-heating-value LNG; when the heat generation is higher than the set range, the process of inputting nitrogen is started.
2. The device for dynamically monitoring and adjusting the calorific value of natural gas according to claim 1, wherein the molecular sieve adsorber (4) in the nitrogen input pipeline (20) is replaced by an air input pipeline.
3. The device for dynamically monitoring and adjusting the calorific value of natural gas according to claim 1, wherein the LNG storage tank (18) and the LNG vaporizer (15) in the LNG input pipeline (21) are eliminated, and the LPG storage tank and the LPG vaporizer are added to the LPG input pipeline instead.
4. The device for dynamically monitoring and adjusting the calorific value of natural gas according to claim 1, wherein the LNG storage tank (18) and the LNG vaporizer (15) in the LNG feed line (21) are replaced by other high calorific value alkane feed lines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010437620.7A CN111853543A (en) | 2020-05-21 | 2020-05-21 | Natural gas calorific capacity dynamic monitoring adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010437620.7A CN111853543A (en) | 2020-05-21 | 2020-05-21 | Natural gas calorific capacity dynamic monitoring adjusting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111853543A true CN111853543A (en) | 2020-10-30 |
Family
ID=72985208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010437620.7A Pending CN111853543A (en) | 2020-05-21 | 2020-05-21 | Natural gas calorific capacity dynamic monitoring adjusting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111853543A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112946167A (en) * | 2021-02-04 | 2021-06-11 | 成都秦川物联网科技股份有限公司 | Energy metering perception control method and system based on chromatography and ultrasonic waves |
| US11796528B2 (en) | 2021-02-04 | 2023-10-24 | Chengdu Qinchuan Iot Technology Co., Ltd. | Method and system for measuring energy of natural gas |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4277254A (en) * | 1980-02-15 | 1981-07-07 | Energy Systems, Incorporated | Control system and apparatus for producing compatible mixtures of fuel gases |
| CN201375883Y (en) * | 2009-03-19 | 2010-01-06 | 天津市华迈燃气技术发展有限公司 | Device utilizing static mixer to mix coal mine gas |
| CN201568739U (en) * | 2009-12-18 | 2010-09-01 | 建设部沈阳煤气热力研究设计院 | Supply device for mine gas stable heat value |
| CN103521101A (en) * | 2013-10-12 | 2014-01-22 | 青岛新奥燃气有限公司 | Natural gas calorific value adjusting method and apparatus |
| CN204852936U (en) * | 2015-06-10 | 2015-12-09 | 东莞新奥燃气有限公司 | But natural gas peak regulation system of automatic adjustment calorific value |
| CN106764437A (en) * | 2016-12-23 | 2017-05-31 | 东莞新奥燃气有限公司 | A kind of many source of the gas gas air supply systems |
| CN210237553U (en) * | 2019-06-11 | 2020-04-03 | 武汉市燃气热力规划设计院有限公司 | Facility system for effectively adjusting heat value of natural gas |
| CN212776830U (en) * | 2020-05-21 | 2021-03-23 | 北京市公用事业科学研究所 | Natural gas calorific capacity dynamic monitoring adjusting device |
-
2020
- 2020-05-21 CN CN202010437620.7A patent/CN111853543A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4277254A (en) * | 1980-02-15 | 1981-07-07 | Energy Systems, Incorporated | Control system and apparatus for producing compatible mixtures of fuel gases |
| CN201375883Y (en) * | 2009-03-19 | 2010-01-06 | 天津市华迈燃气技术发展有限公司 | Device utilizing static mixer to mix coal mine gas |
| CN201568739U (en) * | 2009-12-18 | 2010-09-01 | 建设部沈阳煤气热力研究设计院 | Supply device for mine gas stable heat value |
| CN103521101A (en) * | 2013-10-12 | 2014-01-22 | 青岛新奥燃气有限公司 | Natural gas calorific value adjusting method and apparatus |
| CN204852936U (en) * | 2015-06-10 | 2015-12-09 | 东莞新奥燃气有限公司 | But natural gas peak regulation system of automatic adjustment calorific value |
| CN106764437A (en) * | 2016-12-23 | 2017-05-31 | 东莞新奥燃气有限公司 | A kind of many source of the gas gas air supply systems |
| CN210237553U (en) * | 2019-06-11 | 2020-04-03 | 武汉市燃气热力规划设计院有限公司 | Facility system for effectively adjusting heat value of natural gas |
| CN212776830U (en) * | 2020-05-21 | 2021-03-23 | 北京市公用事业科学研究所 | Natural gas calorific capacity dynamic monitoring adjusting device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112946167A (en) * | 2021-02-04 | 2021-06-11 | 成都秦川物联网科技股份有限公司 | Energy metering perception control method and system based on chromatography and ultrasonic waves |
| CN112946167B (en) * | 2021-02-04 | 2022-05-27 | 成都秦川物联网科技股份有限公司 | Energy metering perception control method and system based on chromatography and ultrasonic waves |
| US11796528B2 (en) | 2021-02-04 | 2023-10-24 | Chengdu Qinchuan Iot Technology Co., Ltd. | Method and system for measuring energy of natural gas |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111853543A (en) | Natural gas calorific capacity dynamic monitoring adjusting device | |
| CN201543389U (en) | Follow-up gas-air mixing device | |
| Stansberry et al. | Experimental dynamic dispatch of a 60 kW proton exchange membrane electrolyzer in power-to-gas application | |
| US20160354742A1 (en) | System and method for blending biogas | |
| US12000542B2 (en) | Systems and methods for optimization of a petroleum distribution system | |
| CN101037627B (en) | Method and device for producing town gas by using refinery exhaust | |
| CN212776830U (en) | Natural gas calorific capacity dynamic monitoring adjusting device | |
| CN112649042A (en) | Experimental measurement device for urban natural gas hydrogen-doped mixing effect | |
| CN203453771U (en) | Gas supplying device capable of continuously distributing gas and stabilizing wobbe index | |
| CN103861489A (en) | Gas mixing system and method applicable to gas distribution system of internal combustion engine | |
| CN101014686A (en) | Gas reforming equipment | |
| CN201245630Y (en) | Gas-phase blending device for dimethyl ether and liquefied petroleum gas or natural gas | |
| CN111830192B (en) | Air-mixed fuel gas combustion performance test system and test method thereof | |
| CN205806935U (en) | A kind of major and minor pipe switched system for mixed gas pressurization | |
| CN204347191U (en) | A kind of intrinsic safety ternary gas distribution pilot system | |
| RU2600484C1 (en) | Modular automated system for mixing natural gas with atmospheric air | |
| CN203750434U (en) | Gas mixing system for internal combustion engine air distribution system | |
| EP2413409B1 (en) | Central media supply unit for reformer fuel cell systems | |
| CN216976520U (en) | Mixed gas transmission and distribution system for natural gas and hydrogen | |
| CN201148418Y (en) | Dimethyl ether and liquefied petroleum gas-liquid phase mixing apparatus | |
| CN102660333A (en) | Method and system for stably controlling calorific value of converter gas | |
| CN213680558U (en) | Gas mixing system for power station | |
| CN203494410U (en) | Automatic flow-adjusted gas mixer | |
| CN113719834A (en) | Multi-medium mixed-phase gas generation system and method for regulating and controlling gas production of generator | |
| CN112648081A (en) | IGCC (integrated gasification combined cycle) -based power generation fuel heat value regulation and control method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20240229 Address after: Room 201, 2nd Floor, Building 13, Anhuali (Beijing Institute of Public Utility Science), Wuluju Community, Chaoyang District, Beijing, 100000 Applicant after: Beijing Public Utility Science Research Institute Co.,Ltd. Country or region after: China Address before: 100011 Beijing, Chaoyang District Anwai museum outside East Backstreet No. 35 Applicant before: BEIJING PUBLIC UTILITY Research Institute Country or region before: China |