A kind of retaining valve opening pressure pick-up unit
Technical field
The invention belongs to retaining valve opening pressure pick-up unit technical field, more particularly, relate to a kind of retaining valve opening pressure pick-up unit.
Background technology
Retaining valve is that fluid can only flow the device that the water delivering orifice medium can't reflux along water inlet.In the prior art, the opening pressure that detects retaining valve all adopts air pressure or hydraulic means to carry out, but; If required minimum pressure when using air pressure and hydraulic means to detect the retaining valve unlatching; The cost of pick-up unit is higher on the one hand, and complex structure, detecting operation get up difficult relatively; On the other hand, detected retaining valve unlatching minimum pressure value is inaccurate, and the numerical value than actual is big usually.
Summary of the invention
Technical matters to be solved by this invention is: the deficiency to prior art, provide a kind of simple in structure, and can be convenient for measuring out the retaining valve opening pressure pick-up unit of the minimum opening pressure of retaining valve.
Solve above-described technical matters, the technical scheme that the present invention takes is:
The present invention is a kind of retaining valve opening pressure pick-up unit; Described retaining valve opening pressure pick-up unit comprises device body; The pressure transducer that can move along device body is installed on the device body; Pressure transducer with can be connected with the sensor contact of retaining valve contact, between the valve body of retaining valve and the one-way valve spring DC circuit is set, installation is used to detect the pilot lamp of DC circuit break-make on the DC circuit.
Described device body is set to square platy structure; Recessed sensor chute is set on the device body; Pressure transducer is contained in the sensor chute through the part active card that clamps of inverted T-shaped, and pressure transducer is set to the structure that can move along the sensor chute.
On the body side of described device body rectangular-shaped orienting lug is set; The coarse adjustment gathering sill is set on the orienting lug; On the orienting lug outside surface draw-in groove is set, the coarse adjustment slide block that setting can be moved along draw-in groove in the draw-in groove, described coarse adjustment slide block is connected with pressure transducer through the connecting link that passes the coarse adjustment gathering sill near a side of device body; The opposite side of coarse adjustment slide block is connected with coarse adjustment slide block push rod, and described pressure transducer is set to show the structure of sensor contact bearing pressure numerical value.
Described retaining valve is set to be installed on the structure on the device body, when described retaining valve is installed on the device body, the sensor contact of pressure transducer be set to can with the ball valve contacting structure in the retaining valve.
Baffle plate I and baffle plate II are set on the described device body, baffle plate I and baffle plate II be connected plate and form U font structure, connect plate and be sleeved on the coarse adjustment slide block push rod, and with coarse adjustment slide block push rod between be fixedly connected.
Described retaining valve opening pressure pick-up unit also comprises regulating rod; Regulating rod is set to pass the structure of baffle plate II; Regulating rod one end is resisted against on the pressure transducer; The other end is set to extend the structure of baffle plate II, the structure that is set to be threaded between regulating rod and the baffle plate II, and regulating rod is set to can be along the structure of baffle plate II spinning in and out.
Be provided for rotating the fine setting rocking handle of regulating rod on the described regulating rod that extends baffle plate II one end.
Adopt technical scheme of the present invention, can obtain following beneficial effect:
Retaining valve opening pressure pick-up unit of the present invention; Can be convenient for measuring out the minimum opening pressure of retaining valve, and with respect to hydraulic pressure, pneumatic shuttle, simple in structure; Producing process is easy; Cost reduces, and detection method is simple, detects effect and approaches actual conditions more than conventional method.
Description of drawings
The mark of facing down among expressed content of each accompanying drawing of this instructions and the figure is made briefly bright:
Fig. 1 is the one-piece construction synoptic diagram of retaining valve opening pressure pick-up unit of the present invention;
Fig. 2 is the device body of the described retaining valve opening pressure of Fig. 1 pick-up unit and the structural representation of orienting lug;
Fig. 3 is the local structure for amplifying synoptic diagram of the described retaining valve opening pressure of Fig. 1 pick-up unit;
The position synoptic diagram of pick-up unit and retaining valve when Fig. 4 carries out the detection of retaining valve opening pressure for retaining valve opening pressure pick-up unit of the present invention;
Fig. 5 is the syndeton cross-sectional schematic of the pressure transducer and the sensor chute of retaining valve opening pressure pick-up unit of the present invention;
Fig. 6 is the coarse adjustment slide block of retaining valve opening pressure pick-up unit of the present invention and the local structure for amplifying synoptic diagram of coarse adjustment gathering sill;
Be labeled as among the figure: 1, device body; 2, pressure transducer; 3, retaining valve; 4, sensor contact; 5, valve body; 6, one-way valve spring; 7, DC circuit; 8, pilot lamp; 9, sensor chute; 10, clamp part; 11, orienting lug; 12, body side; 13, coarse adjustment gathering sill; 14, coarse adjustment slide block push rod; 15, baffle plate I; 16, baffle plate II; 17, connect plate; 18, regulating rod; 19, fine setting rocking handle; 20, ball valve; 21, retaining valve opening pressure pick-up unit; 22, orienting lug outside surface; 23, draw-in groove; 24, coarse adjustment slide block; 25, connecting link.
Embodiment
Contrast accompanying drawing below; Through the description to embodiment, the effect of mutual alignment between the shape of specific embodiments of the invention such as related each member, structure, the each several part and annexation, each several part and principle of work etc. are done further to specify:
Shown in accompanying drawing 1-accompanying drawing 6; The present invention is a kind of retaining valve opening pressure pick-up unit; Described retaining valve opening pressure pick-up unit comprises device body 1, and the pressure transducer 2 that can move along device body 1 is installed on the device body 1, pressure transducer 2 with can be connected with the sensor contact 4 that retaining valve 3 contacts; Between the valve body 5 of retaining valve 3 and the one-way valve spring 6 DC circuit 7 is set, the pilot lamp 8 that is used to detect DC circuit 7 break-makes is installed on the DC circuit 7.
Described device body 1 is set to square platy structure; Recessed sensor chute 9 is set on the device body 1; Pressure transducer 2 is contained in the sensor chute 9 through part 10 active card that clamp of inverted T-shaped, and pressure transducer 2 is set to the structure that can move along sensor chute 9.
On the body side 12 of described device body 1 rectangular-shaped orienting lug 11 is set; Coarse adjustment gathering sill 13 is set on the orienting lug 11; Draw-in groove 23 is set on the orienting lug outside surface 22; The coarse adjustment slide block 24 that settings can be moved along draw-in groove in the draw-in groove 23; Described coarse adjustment slide block 24 is connected with pressure transducer 2 through the connecting link 25 that passes coarse adjustment gathering sill 13 near a side of device body 1, and the opposite side of coarse adjustment slide block 24 is connected with coarse adjustment slide block push rod 14, and described pressure transducer 2 is set to show the structure of sensor contact 4 bearing pressure numerical value.
Described retaining valve 3 is set to be installed on the structure on the device body 1, and described retaining valve 3 is installed on 1 last time of device body, the sensor contact 4 of pressure transducer 2 be set to can with ball valve 20 contacting structure in the retaining valve 3.
Baffle plate I15 and baffle plate II16 are set on the described device body 1, baffle plate I15 and baffle plate II16 be connected plate 17 and form U font structures, connect plate 17 and be sleeved on the coarse adjustment slide block push rod 14, and with coarse adjustment slide block push rod 14 between be fixedly connected.
Described retaining valve opening pressure pick-up unit also comprises regulating rod 18; Regulating rod 18 is set to pass the structure of baffle plate II16; Regulating rod 18 1 ends are resisted against on the pressure transducer 2; The other end is set to extend the structure of baffle plate II16, the structure that is set to be threaded between regulating rod 18 and the baffle plate II17, and regulating rod 18 is set to can be along the structure of baffle plate II17 spinning in and out.
Be provided for rotating the fine setting rocking handle 19 of regulating rod 18 on the described regulating rod 18 that extends baffle plate II17 one end.
In retaining valve opening pressure pick-up unit of the present invention, when needs detect the minimum opening pressure of retaining valve 3, earlier retaining valve 3 is installed on the device body 1; At this moment, the sensor contact 4 of pressure transducer 2 is set to aim at the structure of the ball valve 20 in the retaining valve 3, at this moment; Pull coarse adjustment slide block push rod 14, coarse adjustment slide block push rod 14 promotes pressure transducer 2 and moves along sensor chute 9, thereby makes sensor contact 4 near one-way valve spring 6; And make sensor contact 4 promptly contact ball valve 20, at this moment, can show the numerical value of pressure size on the pressure transducer 2; At this moment, use regulating rod 3 again instead and further slowly regulate pressure transducer 2, when further slowly regulating pressure transducer 2; Turn fine setting rocking handle 19, regulating rod 18 advances to device body 1 one sidespins, further slowly supports the ball valve 20 to retaining valve 3 thereby promote pressure transducer 2; Thereby can be very slowly to ball valve 20 imposed loads of retaining valve 3, at this moment, can observe the bright and dark of pilot lamp 8 on the DC circuit 7; Pilot lamp 8 deepenings, i.e. prompting stops to continue the signal to retaining valve 3 imposed loads, at this moment; Regulating rod 18 keeps original invariant position, required minimum pressure numerical value in the time of can reading retaining valve 3 and open through pressure transducer 2.
Pick-up unit of the present invention; Utilize DC circuit 7 series connection pilot lamp 8 and retaining valve 3; Through the bright of pilot lamp 8 with extinguish the unlatching of judging retaining valve 3 with closed, when wherein pilot lamp 8 extinguished, the pressure value that pressure transducer 2 is measured was exactly the minimum opening pressure of retaining valve 3:
Opening pressure=unlatching pressure * useful area.
Like this, just can converse the needed minimum pressure of open check valve equivalently.
In pick-up unit of the present invention; Regulate coarse adjustment slide block push rod 14, make pressure transducer to move along sensor chute 9, and the setting of baffle plate I15 and baffle plate II16; Can play the effect that pressure transducer moves that promotes; Like Fig. 1-shown in Figure 3, baffle plate I15 promotes the pressure sensor reach, and baffle plate II16 then plays the effect that pushes back pressure transducer 2.
After having detected the minimum opening pressure of a retaining valve 3,, thereby can carry out the testing of next retaining valve 3 with regulating rod 18 and 14 repositions of coarse adjustment slide block push rod.
Pick-up unit of the present invention utilizes the minimum opening pressure of measuring retaining valve 3 to substitute and directly measures the open check valve 3 needed minimum pressure of opening.Pick-up unit of the present invention is unlike directly needing independent air pressure and hydraulic pressure generator with air pressure and hydraulic means that kind; Just replace air pressure and hydrostatic transmission through simple structure setting; Structure of the present invention; Unlike the very big elasticity of the such existence of gas transmission, also unlike the such delay of response of hydraulic means; Secondly, this mechanism does not require the sealing of measurement mechanism, can significantly reduce processing cost like this, and does not influence the accuracy of measurement effect.
Retaining valve opening pressure pick-up unit of the present invention; Can be convenient for measuring out the minimum opening pressure of retaining valve, and with respect to hydraulic pressure, pneumatic shuttle, simple in structure; Producing process is easy; Cost reduces, and detection method is simple, detects effect and approaches actual conditions more than conventional method.
Combine accompanying drawing that the present invention has been carried out exemplary description above; Obviously the concrete realization of the present invention does not receive the restriction of aforesaid way; As long as the various improvement of having adopted method design of the present invention and technical scheme to carry out; Or design of the present invention and technical scheme are directly applied to other occasions without improving, all in protection scope of the present invention.