CN213207291U - Odorization process system in natural gas station - Google Patents
Odorization process system in natural gas station Download PDFInfo
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- CN213207291U CN213207291U CN202021340267.2U CN202021340267U CN213207291U CN 213207291 U CN213207291 U CN 213207291U CN 202021340267 U CN202021340267 U CN 202021340267U CN 213207291 U CN213207291 U CN 213207291U
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Abstract
The utility model provides an odorizing process system in a natural gas station, which comprises a natural gas pipeline, a controller, a gas flowmeter and an odorizing pump, wherein the gas flowmeter and the odorizing pump are sequentially arranged on the natural gas pipeline according to the flow direction of natural gas; the odorizing pump comprises a pump body and an electric adjusting knob, the electric adjusting knob is connected with the pump body, and the electric adjusting knob comprises an electric actuating mechanism, a linkage rod connected with the electric actuating mechanism and an actuating rod connected with the linkage rod; the electric actuator is electrically connected with the controller, and the gas flowmeter is electrically connected with the controller. When the odorizing standard after the natural gas flow changes is met, the operating frequency of the odorizing pump is fixed, the current is fixed, all parts are stressed uniformly, and the service life of the odorizing pump is prolonged to a great extent; meanwhile, when the natural gas flow is low, manual and automatic switching is not needed frequently, and the labor intensity of personnel is reduced.
Description
Technical Field
The utility model belongs to the technical field of the natural gas adds smelly technique and specifically relates to an add smelly process systems in natural gas station.
Background
The main component of natural gas is methane, which is colorless, odorless, flammable and explosive gas and cannot be detected when leaked into the air. Therefore, natural gas must be odorized for use by urban users.
The existing natural gas odorization process flow is that a motor pump injects an odorizing agent (tetrahydrothiophene) into a natural gas pipeline. When the flow of the natural gas changes, the control module correspondingly increases or decreases the rotation frequency of the pump so as to control the odorizing amount to be consistent; the single filling amount of the motor pump is a fixed value, and the stroke adjustment of the pump can be controlled through a manual adjusting knob. The odorization mode is a mode for adapting to the change of the natural gas flow by changing the operation frequency of the pump, and has the following defects: firstly, when the natural gas flow is small, the operation frequency of a pump is low, the single injection amount is inaccurate, and the problem that the odorizing standard does not reach the standard easily is caused; secondly, when the flow of the natural gas changes frequently, the control frequency of the odorizing pump also changes frequently, the current of the equipment also changes continuously, and the equipment is easy to damage; finally, the components of the pump are stressed unevenly during the working process, so that the leakage of the odor agent is easily caused, and environmental pollution and complaints of residents are caused.
However, if the change in natural gas flow rate is accommodated by changing the amount of single injection rather than changing the frequency of rotation of the pump, the above-described problems can be solved; therefore, it is necessary to design an odorizing process system, that is, when the natural gas flow rate in the natural gas pipeline changes, the required single injection amount is calculated under the condition that the rotation frequency of the pump is not changed, and then a control signal is output to correspondingly adjust and change the stroke of the pump, so that the odorizing single injection amount is changed.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides an add smelly process systems in natural gas station.
In order to achieve the above purpose, the utility model discloses a realize through following technical scheme:
a odorizing process system in a natural gas station comprises a natural gas pipeline, a controller, a gas flowmeter and an odorizing pump, wherein the gas flowmeter and the odorizing pump are sequentially arranged on the natural gas pipeline according to the flow direction of natural gas; the odorizing pump comprises a pump body and an electric adjusting knob, the electric adjusting knob is connected with the pump body, and the electric adjusting knob comprises an electric actuating mechanism, a linkage rod connected with the electric actuating mechanism and an actuating rod connected with the linkage rod; the electric actuating mechanism is electrically connected with the controller, and the gas flowmeter is electrically connected with the controller.
Further, the controller comprises a microprocessor and a control module in electrical signal connection with the microprocessor, the microprocessor is in electrical signal connection with the gas flowmeter, and the control module is electrically connected with the electric actuating mechanism; when the natural gas flow in the natural gas pipeline changes, the natural gas flow value obtained by the gas flowmeter is transmitted to the microprocessor, the odorizing single injection amount is calculated in the microprocessor according to the natural gas flow, then the stroke of the execution rod is correspondingly adjusted through the control module, and finally the odorizing amount meeting the natural gas flow change is added under the condition that the rotation frequency of the execution rod is not changed.
Furthermore, an outlet one-way valve and an inlet one-way valve are respectively arranged at the left end and the right end of the pump body, the inlet one-way valve is communicated with an odor source, the outlet one-way valve is communicated with the natural gas pipeline, a cavity and a stroke cavity are arranged in the pump body, a diaphragm is arranged in the cavity, the diaphragm divides the cavity into an oil cavity and an air cavity, the oil cavity is communicated with the stroke cavity, and the air cavity is communicated with the outlet one-way valve and the inlet one-way valve; the actuating rod is arranged inside the stroke cavity; by the operation of the actuating lever, the odorous agent is transported from the outlet check valve into the natural gas pipe.
Furthermore, an exhaust valve and an oil supplementing valve which are communicated with the oil cavity are arranged on the pump body; ensure the normal operation of odorization.
The utility model has the advantages that: when the odorizing standard after the natural gas flow changes is met, the operating frequency of the odorizing pump is fixed, the current is fixed, all parts are stressed uniformly, and the service life of the odorizing pump is prolonged to a great extent; meanwhile, when the natural gas flow is low, manual and automatic switching is not needed frequently, and the labor intensity of personnel is reduced.
Drawings
FIG. 1 is a flow chart of the present invention;
FIG. 2 is a schematic view of the structure of the odorizing pump of the present invention;
in the figure: 1. an electric actuator; 2. a linkage rod; 3. an actuating lever; 4. a pump body; 5. a stroke chamber; 6. a cavity; 7. a diaphragm; 8. an inlet check valve; 9. an outlet check valve; 10. an exhaust valve; 11. oil supply valve.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings:
as shown in fig. 1 and 2, the odorizing process system in the natural gas station comprises a natural gas pipeline, a controller, a gas flowmeter and an odorizing pump, wherein the gas flowmeter and the odorizing pump are sequentially arranged on the natural gas pipeline according to the flow direction of natural gas; the odorizing pump comprises a pump body 4 and an electric adjusting knob, the electric adjusting knob is connected with the pump body 4, and the electric adjusting knob comprises an electric actuating mechanism 1, a linkage rod 2 connected with the electric actuating mechanism 1 and an actuating rod 3 connected with the linkage rod 2; the electric actuator 1 is electrically connected with the controller, and the gas flowmeter is electrically connected with the controller.
The controller comprises a microprocessor and a control module in electrical signal connection with the microprocessor, the microprocessor is in electrical signal connection with the gas flowmeter, and the control module is electrically connected with the electric actuator 1; when the natural gas flow in the natural gas pipeline changes, the natural gas flow value obtained by the gas flowmeter is transmitted to the microprocessor, the odorizing single injection amount is calculated in the microprocessor according to the natural gas flow, then the stroke of the execution rod 3 is correspondingly adjusted through the control module, and finally the odorizing amount meeting the natural gas flow change is added under the condition that the rotation frequency of the execution rod 3 is not changed.
An outlet one-way valve 9 and an inlet one-way valve 8 are respectively arranged at the left end and the right end of the pump body 4, the inlet one-way valve 8 is communicated with an odor source, the outlet one-way valve 9 is communicated with a natural gas pipeline, a cavity 6 and a stroke cavity 5 are arranged inside the pump body 4, a diaphragm 7 is arranged inside the cavity 6, the cavity 6 is divided into an oil cavity and an air cavity by the diaphragm 7, the oil cavity is communicated with the stroke cavity 5, and the air cavity is communicated with the outlet one-way valve 9 and the inlet one-way valve; the actuating rod 3 is arranged inside the stroke chamber 5; by performing the operation of the lever 3, the odorous agent is transported from the outlet check valve 9 into the natural gas pipe.
The pump body 4 is provided with an exhaust valve 10 and an oil supplementing valve 11 which are communicated with the oil cavity; ensure the normal operation of odorization.
The utility model discloses a theory of operation does:
as shown in fig. 1 and 2, when the natural gas flow rate in the natural gas pipeline changes, the natural gas flow rate value obtained by the gas flowmeter is transmitted to the microprocessor, the odorizing single injection amount is calculated in the microprocessor according to the natural gas flow rate, then the stroke of the execution rod 3 is correspondingly adjusted through the control module, and finally the odorizing amount meeting the natural gas flow rate change is added under the condition that the rotation frequency of the execution rod 3 is not changed; that is, under the operation of the electric actuator 1, the actuating rod 3 makes reciprocating piston motion in the stroke cavity 5 and drives the diaphragm 7 to move, so that the odorous agent enters the air cavity from the inlet one-way valve 8 and then is conveyed into the natural gas pipeline from the outlet one-way valve 9.
Compared with the prior art, the utility model discloses the beneficial effect who has does:
when the odorizing standard after the natural gas flow changes is met, the operating frequency of the odorizing pump is fixed, the current is fixed, all parts are stressed uniformly, and the service life of the odorizing pump is prolonged to a great extent; meanwhile, when the natural gas flow is low, manual and automatic switching is not needed frequently, and the labor intensity of personnel is reduced.
The above is only the preferred embodiment of the present invention, and not the patent protection scope of the present invention is limited thereby, all the equivalent structure changes made by the contents of the specification and the drawings of the present invention can be directly or indirectly applied to other related technical fields, and all the same principles are included in the protection scope of the present invention.
Claims (4)
1. The odorizing process system in the natural gas station is characterized by comprising a natural gas pipeline, a controller, a gas flowmeter and an odorizing pump, wherein the gas flowmeter and the odorizing pump are sequentially arranged on the natural gas pipeline according to the flow direction of natural gas; the odorizing pump comprises a pump body and an electric adjusting knob, the electric adjusting knob is connected with the pump body, and the electric adjusting knob comprises an electric actuating mechanism, a linkage rod connected with the electric actuating mechanism and an actuating rod connected with the linkage rod; the electric actuating mechanism is electrically connected with the controller, and the gas flowmeter is electrically connected with the controller.
2. The odorizing process system in the natural gas station according to claim 1, wherein the controller includes a microprocessor and a control module in electrical signal connection with the microprocessor, the microprocessor is in electrical signal connection with the gas flow meter, and the control module is electrically connected with the electric actuator.
3. The odorizing process system in a natural gas station according to claim 1, wherein an outlet check valve and an inlet check valve are respectively provided at the left end and the right end of the pump body, a cavity and a stroke cavity are provided inside the pump body, a diaphragm is provided inside the cavity, the diaphragm divides the cavity into an oil cavity and an air cavity, the oil cavity is communicated with the stroke cavity, and the air cavity is communicated with the outlet check valve and the inlet check valve; the actuating rod is arranged inside the stroke cavity.
4. The odorizing process system in the natural gas station as claimed in claim 3, wherein the pump body is provided with an exhaust valve and an oil replenishment valve which are communicated with the oil chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021340267.2U CN213207291U (en) | 2020-07-09 | 2020-07-09 | Odorization process system in natural gas station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021340267.2U CN213207291U (en) | 2020-07-09 | 2020-07-09 | Odorization process system in natural gas station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213207291U true CN213207291U (en) | 2021-05-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021340267.2U Active CN213207291U (en) | 2020-07-09 | 2020-07-09 | Odorization process system in natural gas station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213207291U (en) |
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2020
- 2020-07-09 CN CN202021340267.2U patent/CN213207291U/en active Active
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