CN201149617Y - Portable load instrument for measurement specially - Google Patents

Abstract

The utility model discloses a special portable measuring load instrument, comprising a case body(1), an ammeter(2), a voltmeter(3), a switch knob(4), a tripping knob(5) and a temperature controller(9). The special portable measuring load instrument is characterized in that an upper current transformator(6) is fixed on the upper part of the external front side of the case body(1); an upper relay protection AC contactor(7) and a control AC contactor(7`) are fixed in parallel on the lower part of the external front side of the case body(1); an upper electric load(8)is fixed on the external back side of the case body(1); the electric load(8)provides artificial load to the user to enable a site electric energy check instrument to work normally. The special portable measuring load instrument can examine and check the lines at the site to ensure accurate measurement of the electricity consumption of the client even if the client fails to satisfy the loading requirement, thus avoiding second examine and check and saving cost; meanwhile the special portable measuring load instrument is simple in structure and is convenient to operate and can greatly improve work efficiency; therefore the special portable measuring load instrument is widely applied in power supply corporations for wiring detection on electric energy meters.

Description

Portable metrology charge instrument

Technical field

The utility model relates to the utility appliance of a kind of power supply enterprise verification electric energy meter, and a particularly a kind of auxiliary electric energy performance tester detects the portable metrology charge instrument of connection box of electric energy meter and error.

Background technology

Whether the wiring that electric energy meter and mutual inductor detect in power supply enterprise correctly is a numerous and diverse job, normally when the user queries or regularly patrols, the band electric energy meter on-site calibrator is just pinpointed the problems when site inspection is measured, this has often caused certain loss, and the labour cost height is unfavorable for the raising of power supply enterprise's measurement Management Level.Present employed electric energy meter on-site calibrator, form by voltage, current sampling circuit, Programmable Gain Amplifier Circuit, modulus converter A/D, central processing unit or digital signal processor, pulse input circuit, this electric energy meter on-site calibrator structure is little, can be easy to carry, help on-the-spot the detection.During at the scene to electrical energy meter calibration, to be inserted the sample circuit of electric energy meter on-site calibrator by the voltage of school electric energy meter, current signal, by central processing unit or DSP CONTROL, the A/D analog to digital converter is digital signal with analog signal conversion and calculates electric parameter in real time, simultaneously, system receives by the verification of the pulse signal of school electric energy meter realization to electric energy meter by pulsating sampler.Obviously, this electric energy meter on-site calibrator only having under the situation of load, just can be had current signal by the school electric energy meter, could be examined by the school.Therefore, present employed electric energy meter on-site calibrator still has the following disadvantages: the one, and do not have the electric power frequent customer under the situation of power load and can't on-the-spotly detect, have only when the client just can carry out the scene under the situation of electricity consumption and detect, make the on-the-spot restriction that has been subjected to the client that detects; The 2nd, along with power customer increases gradually, already expand in the new clothes client transmission process at electric power, most power customers make the electric-power metering personnel can't utilize electric energy meter on-site calibrator to carry out the inspection of on-the-spot school because of suitable measurement load can not be provided; During in addition because of capacitive loads such as power customer electric welding, smeltings, metrological personnel also is difficult to utilize electric energy meter on-site calibrator to judge the correctness of its measuring apparatus wiring, this repeatedly tests client's measuring apparatus with regard to causing metrological personnel, the human and material resources cost of power supply enterprise is improved, if there is error connection to take place, also can cause electric quantity loss, directly endanger the economic interests of electric power enterprise; The 3rd, in testing process, need and user's coordination, inconvenient operation, also lack of standardization.

Summary of the invention

The purpose of this utility model is to provide a kind of and makes that power supply enterprise can independently carry out, standard operation, fast detecting, and can stop to measure mistake, improve disposable electricity metering wiring accuracy, the portable metrology charge instrument of raising labour efficiency of sending.

For reaching above purpose; the technical scheme that the utility model adopted is: this portable metrology charge instrument; by casing; reometer; voltage table; switch knob; opening button constitutes; reometer; voltage table; switch knob and opening button are installed on the upper face of casing; it is characterized in that preceding upper lateral part in casing fixing on current transformer; relay protection A.C. contactor and control A.C. contactor on side by side fixing of preceding side lower part in casing; power consumption load on rear side in casing is fixing; the power consumption load is connected with the control A.C. contactor by lead; on the upper face of casing, also establish temperature controller; the relay protection A.C. contactor is connected in series with the control A.C. contactor; the upper end of control A.C. contactor is connected with the lower end of temperature controller with the relay protection A.C. contactor by lead respectively; realize the on-off function of power consumption load by temperature controller; provide the simulation output load by the power consumption load; the duty of temperature controller control power consumption load, thus reach a kind of balancing the load.The utility model is also implemented by following measure: the preceding side lower part in casing is also established earth leakage protective device and fuse, earth leakage protective device is connected with the upper end of fuse by lead, the lower end of fuse is connected with opening button by lead, and be connected with the relay protection A.C. contactor simultaneously, when the switch closure of earth leakage protective device is served electricity, the upper end of three-phase firewire input relay protection A.C. contactor, wherein a phase firewire is imported fuse simultaneously, and through fuse input relay protection A.C. contactor, the relay protection A.C. contactor is by lead-in wire and branch, switch knob connects, and realizes dividing, switch knob running protection function; On the upper face of casing, also be provided with combined floodgate run signal pilot lamp and separating brake stop signal pilot lamp; Described power consumption load, by seal case, liquid heat medium, the combined heated pipe constitutes, liquid heat medium and combined heated Guan Jun are contained in the seal case, the combined heated pipe is connected with the relay protection A.C. contactor by lead, heating realizes the power consumption load to liquid heat medium by the combined heated pipe, adjustment by temperature controller realizes the power consumption size, needed power consumption payload during with accurate simulation test, establish liquid heat medium in upper end wall one side of seal case and add pipe, opposite side is established safety valve, on a sidewall of seal case, establish liquid level and show glass tube, on the sidewall of the bottom of seal case, establish the bleeder valve of liquid heat medium, temperature probe inserts in the thermometer hole of seal case, and is connected with temperature controller by lead; Described casing is the rectangular parallelepiped housing, establishes junction block on the right side wall of casing, establishes insulcrete at the base portion of junction block, establishes chamber door in the front side of casing, establishes liquid level and show the glass tube view window on the casing left side wall, is provided with roller in the bottom of casing.When using the utility model, adopt cable that junction block is connected with client's low pressure leading-out terminal, and the client's that closes low pressure goes out wiretap, electric energy meter field effect instrument is connected on the tested electric energy meter, can carry out the scene detection.Under the situation that no client's load, portable metrology charge instrument also do not start, the imperfect phasor graph that electric energy meter on-site calibrator is tested, electric current I on indicator gauge (A), active power P (W), reactive power Q, phasing degree

, being blank, line inspection table as a result also is blank.Along with the startup of portable metrology charge instrument, the standard phasor graph appears in electric energy meter on-site calibrator, electric current I on indicator gauge (A), active power P, reactive power Q, phasing degree

, and the line inspection all have accurate data to represent in each hurdle as a result.

The beneficial effects of the utility model are: detect with the electric energy meter field effect instrument of present use and compare, owing to increased and carried load device, so, not reaching load because of various reasons the client send under the electric condition, by provide the simulation load to carry out field-checking for the client, the line inspection, guaranteed that client's electricity consumption accurately measures, stop the generation of error connection, prevent electric quantity loss, solved and already expanded the new family of going up because of the zero load difficult problem that can't look into wiring, avoided secondary to look into wiring, saved enterprise cost, simultaneously, simple in structure, easy to operate standard, can significantly improve operating personnel's efficiency, the wiring that can be widely used in power supply enterprise's metering electric energy meter detects.

Description of drawings

Fig. 1 is the utility model structure front-view schematic diagram.

Fig. 2 is the utility model structure schematic top plan view.

Fig. 3 looks synoptic diagram for the utility model right side.

Fig. 4 looks synoptic diagram for the utility model left side.

Fig. 5 is an assembly structure front-view schematic diagram in the utility model casing.

Fig. 6 is that the utility model is along the horizontal cross-sectional schematic of power consumption load.

Fig. 7 is the utility model circuit theory diagrams.

Embodiment

Make the utility model with reference to accompanying drawing 1,2,3,4,5,6,7.This portable metrology charge instrument; by casing 1; reometer 2; voltage table 3; switch knob 4; opening button 5 constitutes; reometer 2; voltage table 3; switch knob 4 and opening button 5 are installed on the upper face of casing 1; it is characterized in that preceding upper lateral part in casing 1 fixing on current transformer 6; relay protection A.C. contactor 7 and control A.C. contactor 7 on side by side fixing of preceding side lower part in casing 1 '; power consumption load 8 on rear side in casing 1 is fixing; power consumption load 8 is by lead and control A.C. contactor 7 ' be connected; on the upper face of casing 1, also establish temperature controller 9; relay protection A.C. contactor 7 and control A.C. contactor 7 ' be connected in series, control A.C. contactor 7 ' the upper end be connected with the lower end of temperature controller 9 by lead respectively with relay protection A.C. contactor 7.The utility model is also implemented by following measure: the preceding side lower part in casing 1 is also established earth leakage protective device 16 and fuse 12, earth leakage protective device 16 is connected by the upper end of lead with fuse 12, the lower end of fuse 12 is connected with opening button 5 by lead, and be connected with relay protection A.C. contactor 7 simultaneously, when the switch closure of earth leakage protective device 16 is served electricity, the upper end of three-phase firewire input relay protection A.C. contactor 7, wherein a phase firewire is imported fuse 12 simultaneously, and through fuse 12 input relay protection A.C. contactors 7, relay protection A.C. contactor 7 is by lead-in wire and branch, switch knob 5,4 connect, and realize dividing, switch knob 5,4 running protection functions; On the upper face of casing 1, also be provided with combined floodgate run signal pilot lamp 10 and separating brake stop signal pilot lamp 11; Described power consumption load 8 is by seal case 8a, liquid heat medium 8b, combined heated pipe 8c constitutes, liquid heat medium 8b and combined heated pipe 8c all are contained in the seal case 8a, combined heated pipe 8c is connected with relay protection A.C. contactor 7 by lead, establish liquid heat medium in upper end wall one side of seal case 8a and add pipe 8e, opposite side is established safety valve 8d, on the sidewall of seal case 8a, establish liquid level and show glass tube 8f, on the sidewall of the bottom of seal case 8a, establish the bleeder valve 8g of liquid heat medium 8b, temperature probe 8m inserts in the thermometer hole of seal case 8a, and is connected with temperature controller 9 by lead; Described casing 1 is the rectangular parallelepiped housing, on the right side wall of casing 1, establish junction block 13, establish insulcrete 17, establish chamber door 18 in the front side of casing 1 at the base portion of junction block 13, on casing 1 left side wall, establish liquid level and show glass tube view window 14, be provided with roller 15 in the bottom of casing 1.

Claims (5)

1; a kind of portable metrology charge instrument; by casing (1); reometer (2); voltage table (3); switch knob (4); opening button (5) constitutes; reometer (2); voltage table (3); switch knob (4) and opening button (5) are installed on the upper face of casing (1); it is characterized in that the fixing current transformer (6) of going up of preceding upper lateral part in casing (1); preceding side lower part in casing (1) fixing relay protection A.C. contactor (7) and the control A.C. contactor (7 ') gone up side by side; the fixing upward power consumption load (8) of rear side in casing (1); power consumption load (8) is connected with control A.C. contactor (7 ') by lead; on the upper face of casing (1), also establish temperature controller (9); relay protection A.C. contactor (7) is connected in series with control A.C. contactor (7 '), and the upper end of control A.C. contactor (7 ') is connected with the lower end of temperature controller (9) with relay protection A.C. contactor (7) by lead respectively.

2; portable metrology charge instrument according to claim 1; it is characterized in that the preceding side lower part in casing (1) also establishes earth leakage protective device (16) and fuse (12); earth leakage protective device (16) is connected by the upper end of lead with fuse (12); the lower end of fuse (12) is connected with opening button (5) by lead; and be connected with relay protection A.C. contactor (7) simultaneously; when the switch closure of earth leakage protective device (16) is served electricity; the upper end of three-phase firewire input relay protection A.C. contactor (7); wherein a phase firewire is imported fuse (12) simultaneously; and through fuse (12) input relay protection A.C. contactor (7), relay protection A.C. contactor (7) is by lead-in wire and branch; switch knob (5; 4) connect.

3, portable metrology charge instrument according to claim 1 is characterized in that also being provided with combined floodgate run signal pilot lamp (10) and separating brake stop signal pilot lamp (11) on the upper face of casing (1).

4; portable metrology charge instrument according to claim 1; it is characterized in that described power consumption load (8) is by seal case (8a); liquid heat medium (8b); combined heated pipe (8c) constitutes; liquid heat medium (8b) and combined heated pipe (8c) all are contained in the seal case (8a); combined heated pipe (8c) is connected with relay protection A.C. contactor (7) by lead; establish liquid heat medium in upper end wall one side of seal case (8a) and add pipe (8e); opposite side is established safety valve (8d); on a sidewall of seal case (8a), establish liquid level and show glass tube (8f); on the bottom sidewall of seal case (8a), establish the bleeder valve (8g) of liquid heat medium (8b); temperature probe (8m) inserts in the thermometer hole of seal case (8a), and is connected with temperature controller (9) by lead.

5, according to claim 1 or 3 described portable metrology charge instruments, it is characterized in that described casing (1) is the rectangular parallelepiped housing, on the right side wall of casing (1), establish junction block (13), establish insulcrete (17) at the base portion of junction block (13), establish chamber door (18) in the front side of casing (1), on casing (1) left side wall, establish liquid level and show glass tube view window (14), be provided with roller (15) in the bottom of casing (1).

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