CN104729950A - Ammonia liquid concentration measurement device - Google Patents
Ammonia liquid concentration measurement device Download PDFInfo
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- CN104729950A CN104729950A CN201510089748.8A CN201510089748A CN104729950A CN 104729950 A CN104729950 A CN 104729950A CN 201510089748 A CN201510089748 A CN 201510089748A CN 104729950 A CN104729950 A CN 104729950A
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- senke
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Abstract
The invention provides an ammonia liquid concentration measurement device. The ammonia liquid concentration measurement device comprises a fixed clamping system, a Lysenko bearing device, a heating circulating system, a depressurization system and a controller, wherein the fixed clamping system is used for fixing the Lysenko bearing device in the heating circulating system; the depressurization system is connected with the Lysenko bearing device; and the controller is connected with a resistance wire heater, a circulating water pump, a temperature sensor, a pressure sensor and a vacuum pump in the heating circulating system and the depressurization system by circuits. The device can be used for rapidly measuring the ammonia liquid concentration on site; the measurement is not influenced by environment temperature and weather; and the ammonia liquid concentration value can be measured in rated time.
Description
Technical field
The invention belongs to ammonia density checking measurements technical field, be specifically related to a kind of ammoniacal liquor apparatus for measuring concentration.
Background technology
Liquefied ammonia as a kind of economy of freezer and excellent cold-producing medium, use by most of freezer.Ammonia has good water absorptivity, even if water also can not be separated out and freeze from ammoniacal liquor at low temperatures, therefore " ice berg " phenomenon can not occur in system.Containing after moisture in ammoniacal liquor, there is corrosive attack to Copper and its alloy, and evaporating temperature is improved slightly.Therefore, can not use Copper and its alloy material in ammonia refrigerating installation, and in regulation ammonia, water cut should more than 0.2%, the liquefied ammonia of water cut more than 0.2% can produce stress corrosion to some steel, has a strong impact on the serviceable life of steel systeming equipment.Liquefied ammonia concentration is a heavy factor of the equipment safety operation affecting bed rearrangement freezer, and the liquefied ammonia concentration of national special safety equipment specification TSG R7001-2013 " pressure vessel periodic inspection rule " regulation freezer must detect once every year.
At present, ammoniacal liquor measurement of concetration is mainly tested according to standard GB/T/T8570-2010 " liquid is without the assay method of ammonia ", the method utilizes the principle of ammoniacal liquor spontaneous evaporation under normal temperature, when ammoniacal liquor is evaporated completely, then measures remaining raffinate Weight computation ammoniacal liquor concentration.The method is easily influenced by ambient temperature, and when being in low-temperature environment in winter, testing efficiency is extremely low.
Summary of the invention
Slow in order to overcome existing ammoniacal liquor concentration measurement equipment measuring speed, by environment, problem that seasonal effect is large, the invention provides that a kind of structure is simple, design and manufaction cost is low, can the device of Quick Measurement ammoniacal liquor concentration.
The present invention realizes especially by following technical scheme:
A kind of ammoniacal liquor apparatus for measuring concentration, comprise fixed clamp system, Li Senke receiver, heating circulation system, depressurizing system and controller, wherein said fixed clamp system comprises support and cantilever, described heating circulation system comprises heating tank, water circulating pump, resistance heater, temperature sensor, described Li Senke receiver is vertically fixed on central authorities in heating tank by cantilever, described heating tank, water circulating pump and resistance heater are by placed in series, and described temperature sensor is fixed near heating tank top end; Described depressurizing system comprises vacuum tank, vacuum pump, pressure transducer, and described vacuum tank is communicated with Li Senke receiver by pipeline, and described pressure transducer and vacuum pump are connected to the tank mouth place of vacuum tank; Described controller is connected by circuit with resistance heater, water circulating pump, temperature sensor, pressure transducer and vacuum pump respectively.
Support in described fixed clamp system is fixed on heating tank top by screw, and cantilever is provided with fixture, for fixing Li Senke receiver.
Described heating tank is provided with water inlet and water delivering orifice, and water inlet is positioned at bottom heating tank, and water delivering orifice is positioned at heating tank top.
Described heating tank is built with water, and temperature sensor is covered completely by water.
In described vacuum tank, absolute pressure scope is 10000-30000Pa.
The principle of work of apparatus of the present invention is: the solubleness of ammonia in water to temperature and air pressure very responsive, the rising of the solubility with temperature of ammonia and the reduction of air pressure and reduce fast; Namely the present invention adopts artificial heating ammoniacal liquor and reduces the method for ammoniacal liquor air pressure, and accelerate ammonia and water velocity of separation, Quick Measuring obtains the concentration of ammonia.
Beneficial effect of the present invention is: 1) can on-site rapid measurement ammoniacal liquor concentration; 2) measure not by environment temperature, seasonal effect, ammoniacal liquor concentration value can be recorded within time rating; 3) carry out monitoring for freezer enterprise controls liquefied ammonia concentration, reduce A leak of liquefied ammonia accident, extend freezer serviceable life.
Accompanying drawing explanation
Fig. 1 is the structural representation of apparatus of the present invention;
Indicate in accompanying drawing and illustrate: 1 resistance heater, 2 water circulating pumps, 3 heating tanks, 4 temperature sensors, 5 supports, 6 cantilevers, 7 Li Senke receivers, 8 vacuum tanks, 9 pressure transducers, 10 vacuum pumps, 11 controllers.
Embodiment
Below in conjunction with drawings and Examples, ammoniacal liquor apparatus for measuring concentration of the present invention is made further explanation and description.
As shown in Figure 1, a kind of ammoniacal liquor apparatus for measuring concentration, comprises fixed clamp system, Li Senke receiver 7, heating circulation system, depressurizing system and controller 11.
Wherein fixed clamp system comprises support 5 and cantilever 6, heating circulation system comprises resistance heater 1, water circulating pump 2, heating tank 3, temperature sensor 4, support 5 is fixed on heating tank 3 top by screw, cantilever 6 is provided with fixture, Li Senke receiver 7 is vertically fixed on xsect central authorities in heating tank 3 by the fixture on cantilever 6, resistance heater 1, water circulating pump 2 and heating tank 3 are contacted by pipeline, temperature sensor 4 is fixed near heating tank 3 top end, heating tank 3 is built with water, and temperature sensor 4 is covered completely by water, heating tank 3 is provided with water inlet and water delivering orifice, water inlet is positioned at bottom heating tank 3, water delivering orifice is positioned at heating tank 3 top.
Depressurizing system comprises vacuum tank 8, pressure transducer 9, vacuum pump 10, and vacuum tank 8 is communicated with Li Senke receiver 7 by pipeline, and in vacuum tank 8, absolute pressure scope is 10000-30000Pa, and pressure transducer 9 and vacuum pump 10 are connected to the tank mouth place of vacuum tank 8.
Controller 11 is connected by circuit with resistance heater 1, water circulating pump 2, temperature sensor 4, pressure transducer 9 and vacuum pump 10 respectively.
The using method that apparatus of the present invention are concrete is:
1) operating personnel wear protective device, take out ammoniacal liquor, put into Li Senke receiver, and write down total measurement (volume) L1, L1 × density p=quality G1 from ammoniacal liquor hold-up vessel;
2) Li Senke receiver is loaded fixed clamp system, Li Senke receiver mouth connects vacuum pipe, and opens the vacuum tank valve be attached thereto;
3) open vacuum pump, make the vacuum tightness of Li Senke receiver remain 20000 ± 50
Pa；
4) opening resistor silk well heater, starts heating;
5) open hot water circulating pump, make the temperature of Li Senke receiver remain 40 ± 2 DEG C;
6) in Li Senke receiver, ammoniacal liquor evaporates, and closes down resistance heater, closes down hot water circulating pump;
7) observe Li Senke receiver scale, write down raffinate volume L2, claim to obtain quality G2;
8) ammoniacal liquor concentration (η=(G1-G2)/G1) is calculated.
The principle of this device is that the solubleness of ammonia in water is very responsive to temperature, and the rising of the solubility with temperature of ammonia reduces fast, and adopt the method for artificial heating ammoniacal liquor, accelerate ammonia and water velocity of separation, Quick Measuring obtains the concentration of ammonia; The solubleness of ammonia in water is very responsive to air pressure, and the solubleness of ammonia reduces rapidly with the reduction of air pressure, and adopt the artificial method reducing ammoniacal liquor air pressure, accelerate ammonia and water velocity of separation, Quick Measuring obtains the concentration of ammonia.
The above embodiment is only further illustrate of the present invention; not other forms of restriction is done to the present invention; the present invention also can have other various embodiments; when not deviating from the present invention's spirit and essence thereof; those of ordinary skill in the art can make various corresponding change and distortion according to the present invention, but these change accordingly and are out of shape the protection domain that all should belong to the claims in the present invention.
Claims (5)
1. an ammoniacal liquor apparatus for measuring concentration, comprises fixed clamp system, Li Senke receiver (7), heating circulation system, depressurizing system and controller (11), it is characterized in that:
Described fixed clamp system comprises support (5) and cantilever (6), described heating circulation system comprises resistance heater (1), water circulating pump (2), heating tank (3), temperature sensor (4), described Li Senke receiver (7) is vertically fixed on central authorities in heating tank (3) by cantilever (6), described resistance heater (1), water circulating pump (2) and heating tank (3) are contacted by pipeline, and described temperature sensor (4) is fixed near heating tank (3) top end;
Described depressurizing system comprises vacuum tank (8), pressure transducer (9), vacuum pump (10), described vacuum tank (8) is communicated with Li Senke receiver (7) by pipeline, and described pressure transducer (9) and vacuum pump (10) are connected to the tank mouth place of vacuum tank (8);
Described controller (11) is connected by circuit with resistance heater (1), water circulating pump (2), temperature sensor (4), pressure transducer (9) and vacuum pump (10) respectively.
2. a kind of ammoniacal liquor apparatus for measuring concentration according to claim 1, it is characterized in that: described support (5) is fixed on heating tank (3) top by screw, cantilever (6) is provided with fixture, for fixing Li Senke receiver (7).
3. a kind of ammoniacal liquor apparatus for measuring concentration according to claim 1, it is characterized in that: described heating tank (3) is provided with water inlet and water delivering orifice, water inlet is positioned at heating tank (3) bottom, and water delivering orifice is positioned at heating tank (3) top.
4. a kind of ammoniacal liquor apparatus for measuring concentration according to claim 3, is characterized in that: described heating tank (3) is built with water, and temperature sensor (4) is covered completely by water.
5. a kind of ammoniacal liquor apparatus for measuring concentration according to claim 1, is characterized in that: the described interior absolute pressure scope of vacuum tank (8) is 10000-30000Pa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510089748.8A CN104729950B (en) | 2015-02-27 | 2015-02-27 | A kind of ammoniacal liquor apparatus for measuring concentration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510089748.8A CN104729950B (en) | 2015-02-27 | 2015-02-27 | A kind of ammoniacal liquor apparatus for measuring concentration |
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| Publication Number | Publication Date |
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| CN104729950A true CN104729950A (en) | 2015-06-24 |
| CN104729950B CN104729950B (en) | 2017-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510089748.8A Expired - Fee Related CN104729950B (en) | 2015-02-27 | 2015-02-27 | A kind of ammoniacal liquor apparatus for measuring concentration |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108443708A (en) * | 2018-03-16 | 2018-08-24 | 石河子天域新实化工有限公司 | A kind of liquefied ammonia security control method |
| CN110680286A (en) * | 2019-10-29 | 2020-01-14 | 上海交通大学 | Portable uterine contraction monitor and auxiliary analysis and diagnosis method thereof |
| CN111398086A (en) * | 2020-04-02 | 2020-07-10 | 台州龙江化工机械科技有限公司 | Liquid ammonia water content measuring device and measuring method thereof |
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2015
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108443708A (en) * | 2018-03-16 | 2018-08-24 | 石河子天域新实化工有限公司 | A kind of liquefied ammonia security control method |
| CN108443708B (en) * | 2018-03-16 | 2020-05-05 | 石河子天域新实化工有限公司 | Liquid ammonia security control method |
| CN110680286A (en) * | 2019-10-29 | 2020-01-14 | 上海交通大学 | Portable uterine contraction monitor and auxiliary analysis and diagnosis method thereof |
| CN111398086A (en) * | 2020-04-02 | 2020-07-10 | 台州龙江化工机械科技有限公司 | Liquid ammonia water content measuring device and measuring method thereof |
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| CN104729950B (en) | 2017-06-23 |
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Granted publication date: 20170623 |