CN205067457U - Sulfur hexafluoride and oxygen concentration analogue means - Google Patents
Sulfur hexafluoride and oxygen concentration analogue means Download PDFInfo
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- CN205067457U CN205067457U CN201520799302.XU CN201520799302U CN205067457U CN 205067457 U CN205067457 U CN 205067457U CN 201520799302 U CN201520799302 U CN 201520799302U CN 205067457 U CN205067457 U CN 205067457U
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Abstract
The utility model discloses a sulfur hexafluoride and oxygen concentration analogue means, including the controller and the airtight cabinet body, internal air distributor of setting of airtight cabinet and the gas sensor who is connected with the controller, air distributor sets up on the upper portion in the airtight space of the airtight cabinet body, and it has two intake pipe, is sulfur hexafluoride intake pipe and oxygen intake pipe respectively, gas sensor includes oxygen concentration sensor group and sulfur hexafluoride concentration sensor group, and each sensor is installed on the inside wall of the airtight cabinet body. The utility model discloses can simulate in the airtight space sulfur hexafluoride gas strength and oxygen concentration's change process. When simulating, sulfur hexafluoride and oxygen get into from sulfur hexafluoride intake pipe and oxygen intake pipe respectively to by air distributor with two kinds of gas uniform distribution in the airtight space of the airtight cabinet body, oxygen concentration sensor and sulfur hexafluoride consistency transmitter detect oxygen and sulfur hexafluoride's concentration respectively, and with concentration signal feedback to controller.
Description
Technical field
The utility model relates to a kind of sulfur hexafluoride and oxygen concentration analogue means.
Background technology
In power industry, sulfur hexafluoride gas is a kind of widely used insulating medium, in confined space, leakage of sulfur hexafluoride gas constitutes a threat to safely to operating personnel's life, the confined space being provided with sulfur hexafluoride electrical equipment must install sulfur hexafluoride leakage alarming device, uninterruptedly monitors sulfur hexafluoride gas concentration in space and oxygen concentration.
For a long time, owing to lacking effective method of calibration, sulfur hexafluoride leakage alarming device result of use is unsatisfactory, and ubiquity probe prohibited data detection really, probe cannot normally work and the fault such as false alarm, adds the security risk of sulfur hexafluoride equipment operator.
Utility model content
The purpose of this utility model is to provide a kind of sulfur hexafluoride and oxygen concentration dynamic analog device, and it can simulate the change procedure of sulfur hexafluoride gas concentration and oxygen concentration in confined space.This analogue means utilizes sulfur hexafluoride calibrating gas and oxygen calibrating gas as external source of the gas, entering the volume of analogue means by controlling sulfur hexafluoride calibrating gas and oxygen calibrating gas, realizing sulfur hexafluoride gas concentration in analogue means and oxygen concentration reaches predetermined numerical value.And the speed that sulfur hexafluoride calibrating gas and oxygen calibrating gas enter analogue means can be controlled, the change procedure of sulfur hexafluoride gas concentration and oxygen concentration in leakage of sulfur hexafluoride gas accident in simulation confined space.
The utility model object is achieved through the following technical solutions, a kind of sulfur hexafluoride and oxygen concentration analogue means, comprise controller and closed cabinet body, gas distributor and gas sensor are set in described closed cabinet body, described gas distributor is arranged on the top of the confined space of closed cabinet body, it has two draft tube, be respectively sulfur hexafluoride draft tube and oxygen intake pipe, described gas sensor comprises oxygen concentration sensor group and concentration of sulfur hexafluoride sensor group, and each sensor is arranged on the madial wall of described closed cabinet body; When simulating, sulfur hexafluoride and oxygen enter from sulfur hexafluoride draft tube and oxygen intake pipe respectively, and by gas distributor by two kinds of even gas distributions in closed cabinet body, oxygen concentration sensor and concentration of sulfur hexafluoride sensor detect the concentration of oxygen and sulfur hexafluoride respectively, and concentration signal is fed back to controller.
Described gas distributor comprises sulfur hexafluoride draft tube, oxygen intake pipe, gas distribution house steward and four gas distribution pipes, and described sulfur hexafluoride draft tube is connected with gas distribution house steward respectively with oxygen intake pipe, and two draft tube are equipped with valve; Described four gas distribution pipes are connected with gas distribution house steward, and these four gas distribution pipes are horizontally disposed with; Described gas distribution pipe is covered with pore, and the gas entering gas distributor is flowed out by pore and enters in the confined space of closed cabinet body.
Described oxygen concentration sensor group comprises two oxygen concentration sensors be separately positioned on the relative both sides madial wall of closed cabinet body.Described concentration of sulfur hexafluoride sensor group comprises two the concentration of sulfur hexafluoride sensors be separately positioned on the relative both sides madial wall of closed cabinet body.Described each sensor is high-precision sensor.
Described closed cabinet body is provided with exhausr port, and this exhausr port is provided with unidirectional gas bleed valve, can unidirectional by the gas discharging in closed cabinet body to outside closed cabinet body, stop the outer gas of closed cabinet body to enter closed cabinet body.
The utility model also comprises sensor mount, and described sensor mount is arranged on closed cabinet body inside, and this sensor mount is provided with and sulfur hexafluoride leakage alarming device sensor.
The utility model is provided with line channel on closed cabinet body, when verifying sulfur hexafluoride leakage alarming device, may be used for connection line is installed, connect the sulfur hexafluoride leakage alarming device sensor be placed in closed cabinet body and the sulfur hexafluoride leakage alarming device main frame be placed on outside closed cabinet body.
Closed cabinet body described in the utility model has openable closed cabinet door.
The utility model also comprises touch-screen, and this touch-screen is arranged on closed cabinet body.
the utility model has the following advantages:
(1) the utility model can simulate the gas concentration of sulfur hexafluoride gas and oxygen in confined space, can also control sulfur hexafluoride gas concentration and oxygen concentration reaches predetermined numerical value simultaneously.
(2) the utility model can sulfur hexafluoride gas and oxygen concentration change procedure in dynamic similation confined space, sulfur hexafluoride gas concentration can be simulated and oxygen concentration is high numerical process from low numerical value change, also can simulate sulfur hexafluoride gas concentration and oxygen concentration is low numerical process from high numerical value change.
(3) the utility model adopts PLC control circui, can carry out self-defined process of compilation to control program, simulates leakage of sulfur hexafluoride gas process under multiple leakage speed.
(4) the utility model adopts openable closed cabinet door, conveniently can take article turnover closed cabinet body, and maintain the closed environment of closed cabinet body.
Accompanying drawing explanation
Fig. 1 is the vertical view cutaway drawing of the utility model sulfur hexafluoride and oxygen concentration analogue means;
Fig. 2 is the side view cutaway drawing of the utility model sulfur hexafluoride and oxygen concentration analogue means;
Fig. 3 is the cut-open view of the utility model sulfur hexafluoride and oxygen concentration analogue means;
Fig. 4 is the theory diagram of the utility model sulfur hexafluoride and oxygen concentration analogue means;
Wherein, 1. touch-screen; 2.PLC controller; 3. closed cabinet body; 4. gas distribution pipe; 5. sulfur hexafluoride air inlet pipeline; 6. oxygen intake pipe road; 7. electrically operated valve A; 8. electrically operated valve B; 9. high precision oxygen concentration sensor; 10. high precision oxygen concentration sensor; 11. high precision concentration of sulfur hexafluoride sensors; 12. high precision concentration of sulfur hexafluoride sensors; 13. sensor mounts; 14. unidirectional air-outlet valves.
Embodiment
Sulfur hexafluoride shown in Fig. 1 and oxygen concentration analogue means are an embodiment of the present utility model, comprise closed cabinet body 3 and the touch-screen 1 that is arranged on closed cabinet body 3 and PLC 2.Closed cabinet body 3 has openable closed cabinet door, arranges gas distributor, gas sensor, sensor mount 13 and be arranged on the sulfur hexafluoride leakage alarming device sensor on sensor mount 13 in closed cabinet body 3.Gas distributor 4 is positioned at the confined space top of closed cabinet body 3, weld fastening by connecting link with closed cabinet body 3, it comprises sulfur hexafluoride draft tube 5, oxygen intake pipe 6, gas distribution house steward and four gas distribution pipes 4, and sulfur hexafluoride draft tube 5 is connected with gas distribution house steward respectively with oxygen intake pipe 6.Sulfur hexafluoride draft tube 5 is provided with electrically operated valve A7, and oxygen intake pipe 6 is provided with electrically operated valve B8.Electrically operated valve A7 is connected with PLC 2 with electrically operated valve B8.Four gas distribution pipes 4 are connected with gas distribution house steward, and four gas distribution pipes 4 are horizontally disposed with.Each gas distribution pipe 4 is covered with pore, and the gas entering gas distributor is flowed out by pore and enters in the confined space of closed cabinet body 3.Gas sensor comprises oxygen concentration sensor group and concentration of sulfur hexafluoride sensor group.Oxygen concentration sensor group comprises two the high precision oxygen concentration sensors 9,10 be separately positioned on the relative both sides madial wall of closed cabinet body 3.Concentration of sulfur hexafluoride sensor group comprises two the high precision concentration of sulfur hexafluoride sensors 11,12 be separately positioned on the relative both sides madial wall of closed cabinet body.When simulating, sulfur hexafluoride and oxygen enter from sulfur hexafluoride draft tube 5 and oxygen intake pipe 6 respectively, and by gas distributor by two kinds of even gas distributions in closed cabinet body 3, oxygen concentration sensor group and concentration of sulfur hexafluoride sensor components do not detect the concentration of oxygen and sulfur hexafluoride, and concentration signal is fed back to PLC 2.
Touch-screen 1 is connected with PLC 2 by data line, is operated by touch-screen 1, can realize assigning operational order and operating parameter to PLC 2.PLC 2 is connected with high precision oxygen concentration sensor 9,10 by data line.PLC 2 is connected with high precision concentration of sulfur hexafluoride sensor 11,12 by data line.PLC 2 is connected with electrically operated valve A7 and electrically operated valve B7 by operation circuit.Unidirectional air-outlet valve 14 is arranged on the exhaust ports bottom closed cabinet body 3, and sensor mount 13 is arranged on closed cabinet body 3 bosom position, is screwed.
Sulfur hexafluoride air inlet pipeline 5 and oxygen intake pipe road 6 are arranged on closed cabinet body 3, and inlet end stretches out outside closed cabinet body 3, and outlet side is positioned at closed cabinet body 3, and air inlet pipeline and closed cabinet body 3 are fixed by welding manner, airtight.
The utility model is provided with line channel on closed cabinet body 3, when verifying sulfur hexafluoride leakage alarming device, may be used for connection line is installed, connect the sulfur hexafluoride leakage alarming device sensor be placed in closed cabinet body 3 and the sulfur hexafluoride leakage alarming device main frame be placed on outside closed cabinet body 3.
During utility model works, carry out operational processes by PLC 2 according to the program compiled, started or terminating operation program by touch-screen 1.First input by touch-screen 1 sulfur hexafluoride gas concentration and oxygen concentration numerical value that analogue means need realize, the cabinet door of closedown closed cabinet body 3, now analogue means is in preparation work state.Sulfur hexafluoride calibrating gas and oxygen calibrating gas are accessed respectively the air intake opening of gas distributor, controlled the opening degree of sulfur hexafluoride calibrating gas gas circuit electrically operated valve A7 and oxygen calibrating gas gas circuit electrically operated valve B8 by PLC 2, sulfur hexafluoride calibrating gas and oxygen calibrating gas are entered in closed cabinet body 3 by gas distributor according to certain speed simultaneously.High precision oxygen concentration sensor 9,10 and high precision concentration of sulfur hexafluoride sensor 11,12 detect the oxygen concentration in closed cabinet body 3 and sulfur hexafluoride gas concentration respectively, and testing result is sent back PLC 2.By PLC 2, detection data and setting data are compared, and gas circuit electrically operated valve A7 and electrically operated valve B8 is fed back.Sulfur hexafluoride gas concentration detects data higher than setting numerical value, the opening degree of sulfur hexafluoride calibrating gas gas circuit electrically operated valve A7 is then strengthened by PLC 2, otherwise, then the opening degree of electrically operated valve A7 is reduced, until sulfur hexafluoride gas concentration detects data reach setting numerical value; Oxygen concentration detects data higher than setting numerical value, then strengthened the opening degree of oxygen calibrating gas gas circuit electrically operated valve B8 by PLC 2, otherwise, then reduce the opening degree of electrically operated valve B8, until oxygen concentration detects data reach setting numerical value.
concrete operations flow process of the present utility model:
1. analogue means prepares
Close closed cabinet body 3 cabinet door, sulfur hexafluoride calibrating gas and oxygen calibrating gas are linked into respectively sulfur hexafluoride air inlet pipeline 5 and oxygen intake pipe road 6, open device power supply (DPS).
2. analogue means work
Open touch-screen 1, case simulator and parameter, click " beginning ", open electrically operated valve A7 and electrically operated valve B8 by PLC 2, PLC 2 detects oxygen and sulfur hexafluoride gas concentration in closed cabinet body 3 by two high precision oxygen concentration sensors 9,10 and high precision concentration of sulfur hexafluoride sensor 11,12.Electrically operated valve A7 and electrically operated valve B8 opening degree is regulated, until sulfur hexafluoride gas concentration and oxygen concentration reach setting numerical value in closed cabinet body 3 by PLC 2.
3. analogue means cuts out
After end simulation work, point touching screen 1, closes simulator program, closes electrically operated valve A7 and electrically operated valve B8 by PLC 2.Disconnect sulfur hexafluoride air inlet pipeline 5 and the sulfur hexafluoride calibrating gas on oxygen intake pipe road 6 and oxygen calibrating gas, closing device power supply.
Claims (10)
1. a sulfur hexafluoride and oxygen concentration analogue means, it is characterized in that, comprise controller and closed cabinet body, gas sensor gas distributor being set in described closed cabinet body and being connected with controller, described gas distributor is arranged on the top of the confined space of closed cabinet body, it has two draft tube, be respectively sulfur hexafluoride draft tube and oxygen intake pipe, described gas sensor comprises oxygen concentration sensor group and concentration of sulfur hexafluoride sensor group, and each sensor is arranged on the madial wall of described closed cabinet body; When simulating, sulfur hexafluoride and oxygen enter from sulfur hexafluoride draft tube and oxygen intake pipe respectively, and by gas distributor by two kinds of even gas distributions in closed cabinet body, oxygen concentration sensor and concentration of sulfur hexafluoride sensor detect the concentration of oxygen and sulfur hexafluoride respectively, and concentration signal is fed back to controller.
2. sulfur hexafluoride according to claim 1 and oxygen concentration analogue means, it is characterized in that, described gas distributor comprises sulfur hexafluoride draft tube, oxygen intake pipe, gas distribution house steward and four gas distribution pipes, described sulfur hexafluoride draft tube is connected with gas distribution house steward respectively with oxygen intake pipe, and two draft tube are equipped with valve; Described four gas distribution pipes are connected with gas distribution house steward, and these four gas distribution pipes are horizontally disposed with; Described gas distribution pipe is covered with pore, and the gas entering gas distributor is flowed out by pore and enters in the confined space of closed cabinet body.
3. sulfur hexafluoride according to claim 1 and 2 and oxygen concentration analogue means, is characterized in that, described oxygen concentration sensor group comprises two oxygen concentration sensors be separately positioned on the relative both sides madial wall of closed cabinet body; Described concentration of sulfur hexafluoride sensor group comprises two the concentration of sulfur hexafluoride sensors be separately positioned on the relative both sides madial wall of closed cabinet body.
4. sulfur hexafluoride according to claim 3 and oxygen concentration analogue means, is characterized in that, described each sensor is high-precision sensor.
5. sulfur hexafluoride according to claim 1 and 2 and oxygen concentration analogue means, is characterized in that, described closed cabinet body is provided with exhausr port, and this exhausr port is provided with unidirectional gas bleed valve, unidirectional by the gas discharging in closed cabinet body to outside closed cabinet body.
6. sulfur hexafluoride according to claim 1 and 2 and oxygen concentration analogue means, it is characterized in that, also comprise sensor mount, described sensor mount is arranged on closed cabinet body inside, and this sensor mount is provided with and sulfur hexafluoride leakage alarming device sensor.
7. sulfur hexafluoride according to claim 6 and oxygen concentration analogue means, it is characterized in that, closed cabinet body is provided with line channel, when verifying sulfur hexafluoride leakage alarming device, for installing connection line, connect the sulfur hexafluoride leakage alarming device sensor be placed in closed cabinet body and the sulfur hexafluoride leakage alarming device main frame be placed on outside closed cabinet body.
8. sulfur hexafluoride according to claim 1 and oxygen concentration analogue means, is characterized in that, described closed cabinet body has openable closed cabinet door.
9. sulfur hexafluoride according to claim 1 and oxygen concentration analogue means, is characterized in that, also comprise touch-screen, and this touch-screen is arranged on closed cabinet body.
10. sulfur hexafluoride according to claim 1 and oxygen concentration analogue means, is characterized in that, described controller is PLC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520799302.XU CN205067457U (en) | 2015-10-16 | 2015-10-16 | Sulfur hexafluoride and oxygen concentration analogue means |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520799302.XU CN205067457U (en) | 2015-10-16 | 2015-10-16 | Sulfur hexafluoride and oxygen concentration analogue means |
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| CN205067457U true CN205067457U (en) | 2016-03-02 |
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| CN201520799302.XU Active CN205067457U (en) | 2015-10-16 | 2015-10-16 | Sulfur hexafluoride and oxygen concentration analogue means |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107607672A (en) * | 2017-08-29 | 2018-01-19 | 广州海洋地质调查局 | A kind of underwater gas sensor calibrator (-ter) unit and calibration method |
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2015
- 2015-10-16 CN CN201520799302.XU patent/CN205067457U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107607672A (en) * | 2017-08-29 | 2018-01-19 | 广州海洋地质调查局 | A kind of underwater gas sensor calibrator (-ter) unit and calibration method |
| CN107607672B (en) * | 2017-08-29 | 2018-12-28 | 广州海洋地质调查局 | A kind of underwater gas sensor calibrator (-ter) unit and calibration method |
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