CN115753072B - Valve testing device - Google Patents
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- CN115753072B CN115753072B CN202211546014.4A CN202211546014A CN115753072B CN 115753072 B CN115753072 B CN 115753072B CN 202211546014 A CN202211546014 A CN 202211546014A CN 115753072 B CN115753072 B CN 115753072B
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- 238000012360 testing method Methods 0.000 title claims abstract description 25
- 238000005259 measurement Methods 0.000 claims abstract description 26
- 239000000523 sample Substances 0.000 claims abstract description 25
- 239000002184 metal Substances 0.000 claims description 53
- 239000000463 material Substances 0.000 claims description 7
- 239000004033 plastic Substances 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 3
- 239000011888 foil Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Abstract
The application provides a valve testing device, which relates to the field of valve testing and comprises a first base body, a push rod and a stress measuring probe, wherein a socket for plugging one end of a valve body, which is provided with an oil inlet, is arranged on the first base body, the push rod is in threaded connection with the first base body, one end of the push rod is positioned in the socket, the other end of the push rod is positioned outside the socket, the push rod is parallel to the direction in which the socket faces, the stress measuring probe is fixed on the end face of one end of the push rod positioned in the socket, the push rod is suitable for being inserted into the oil inlet of the valve body positioned in the socket to drive the stress measuring probe to push the valve, and the stress measuring probe is suitable for measuring the thrust born by the valve. The pre-tightening spring is not required to be jacked outside the valve body to measure the thrust, the opening pressure of the overflow valve after assembly can be measured quickly, larger errors caused by different working conditions in the external measurement process of the pre-tightening spring are avoided, and the measurement accuracy of the opening pressure of the overflow valve is improved.
Description
Technical Field
The application relates to the technical field of valve testing, in particular to a valve testing device.
Background
In the overflow valve, when the acting force of oil pressure on the valve core is larger than the pretightening force of the spring, the valve core is opened, and high-pressure oil flows back to the oil tank through the valve port. The pressure at which the relief valve opens the valve port when relief begins is referred to as the opening pressure. When the overflow valve starts to overflow, the opening of the valve is smaller, and the overflow amount is smaller. As the amount of overflow of the valve port increases, the valve element rises, the spring is further compressed, and the oil pressure rises. When the overflow quantity reaches the rated flow, the valve core is raised to a certain height, and the pressure at the moment is the regulating pressure. The valve of the spill valve is typically preloaded with a spring that initially opens when compressed.
In the prior art, when measuring the opening pressure of an overflow valve (direct acting overflow valve), the elastic force of the spring is usually calculated when the spring is compressed at first, then the opening pressure of the overflow valve is calculated by using the formula P (pressure) =f (elastic force)/S (cross-sectional area of a valve port), for example, the natural length of the spring is L1, the length of the spring when the spring is pre-stressed in a valve body is L2 (L2 < L1), the spring is usually measured outside the valve body in the spring measuring process, the spring is sleeved on a guide post, then the spring is compressed to a state with the length of L2, the elastic force of the spring at this moment is recorded, then the spring is slowly pressed, so that the spring is further compressed to a state with the length of L3 (L3 < L2), in theory, the smaller of L2-L3 is higher, but the working condition of the spring outside the valve body is different from the working condition of the valve body, and because the spring is also different in the state of being installed inside each valve body, the measured opening pressure is greatly different from the actual opening pressure of the valve, and the error of the valves is always different.
In summary, at least the following technical problems exist in the prior art: the opening pressure of the overflow valve is calculated by measuring the elasticity of the spring outside the valve body, and a large error exists.
Disclosure of Invention
The application provides a valve testing device which is used for improving the accuracy of measuring the opening pressure of an overflow valve.
To achieve the above object, in an embodiment of the present application, a valve testing device is provided, including a first seat, a push rod, and a stress measurement probe, where the first seat is provided with a socket into which an end of a valve body, where an oil inlet is provided, the push rod is in threaded connection with the first seat, one end of the push rod is located inside the socket, the other end of the push rod is located outside the socket, the push rod is parallel to a direction in which the socket faces, the stress measurement probe is fixed on an end face of the push rod, located inside the socket, where the push rod is adapted to be inserted into the oil inlet of the valve body located inside the socket to drive the stress measurement probe to push the valve, and the stress measurement probe is adapted to measure a thrust force to which the valve is subjected.
In some embodiments of the present disclosure, the stress measurement probe includes a second base, a first elastic metal sheet, and a strain gauge, where one end of the second base is fixedly connected to an end surface of the push rod, an avoidance groove is disposed on an end surface of the other end of the second base, the first elastic metal sheet spans over a port of the avoidance groove, two ends of the first elastic metal sheet are fixedly connected to the second base, and the strain gauge is attached to a surface of the first elastic metal sheet, which is close to the avoidance groove, and the strain gauge is located inside the avoidance groove.
In some implementations of the embodiments of the present application, the stress measurement probe further includes a second elastic metal sheet, where the second elastic metal sheet penetrates through the second seat body, one end of the second elastic metal sheet is located inside the avoidance groove, the other end of the second elastic metal sheet is located outside the second seat body, the second elastic metal sheet is fixedly connected with the second seat body, the second elastic metal sheet is disposed between the second elastic metal sheet and the second seat body in an insulating manner, the first electrode of the strain gauge is electrically connected with the second seat body, the second electrode of the strain gauge is electrically connected with one end of the second elastic metal sheet located inside the avoidance groove, one end of the second elastic metal sheet located outside the second seat body is adapted to be electrically connected with the valve body, the push rod and the first seat body are made of metal materials, the second seat body is electrically connected with the push rod, and the push rod is electrically connected with the first seat body.
In some implementations of the embodiment of the present application, a top block is fixedly connected to a center position of a surface of the second elastic metal sheet, which is far away from the strain gauge, the top block is hemispherical, a central axis of the top block is perpendicular to the second elastic metal sheet, and the top block is made of a plastic material.
In some implementations of the embodiments of the application, a stepped surface is provided inside the socket, the stepped surface being adapted to abut an end surface of the valve body at the end provided with the oil inlet.
In some implementations of the embodiments of the present application, the valve testing device further includes a set screw, the set screw is in threaded connection with the first seat, the set screw is perpendicular to a central axis of the socket, the set screw penetrates through a side wall of the first seat, one end of the set screw is located inside the socket, the other end of the set screw is located outside the first seat, and one end of the set screw located inside the socket is adapted to be in press fit with an outer side surface of the valve body.
In some implementations of the embodiments of the present application, a turntable is fixedly connected to one end of the push rod located outside the socket, and the push rod is perpendicular to an end surface of the turntable.
In some implementations of the embodiments of the application, an insulating layer is fixedly connected to an inner wall of the socket.
In some implementations of the embodiments of the application, the socket is cylindrical in shape, and the diameter of the inner side of the socket is greater than the diameter of the outer side of the valve body.
In some implementations of the embodiments of the present application, the first seat body is cylindrical, the socket is disposed on an end surface of one end of the first seat body, a first screw hole is disposed at an end of the first seat body, which is far away from the socket, the first screw hole is disposed along an axial direction of the first seat body, the first screw hole penetrates through the first seat body and is communicated with the socket, the push rod is in threaded connection with the first screw hole, a second screw hole is disposed on an outer side surface of the first seat body, the second screw hole penetrates through the first seat body and is communicated with the socket, the second screw hole is disposed along a radial direction of the first seat body, and the set screw is in threaded connection with the second screw hole.
The application has the following beneficial effects:
according to the valve testing device provided by the application, the pre-tightening spring does not need to be subjected to jacking measurement thrust outside the valve body, the opening pressure of the overflow valve after assembly can be rapidly measured, larger errors caused by different working conditions in the external measurement process of the pre-tightening spring are avoided, the measurement accuracy of the opening pressure of the overflow valve is improved, a plurality of overflow valves can be measured one by one, the opening pressure value of each overflow valve is ensured to be within a preset range, oil liquid does not need to be introduced in the whole measurement process, and the valve testing device is convenient to operate, compact in structure, small in size and convenient to carry.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a prior art relief valve;
FIG. 2 is a schematic diagram of a valve testing apparatus according to an embodiment of the present application;
FIG. 3 is a top view of a valve testing apparatus according to an embodiment of the present application;
FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;
FIG. 5 is a schematic view of a first base according to an embodiment of the present application;
FIG. 6 is a schematic diagram of a valve testing device for measuring the relief valve opening pressure according to an embodiment of the present application;
FIG. 7 is a schematic diagram of a stress measurement probe in an embodiment of the application.
Reference numerals:
101. a valve body; 102. a valve; 103. an adjusting screw; 104. a pre-tightening spring; 105. an oil inlet; 106. an oil outlet; 107. a movable cavity; 108. a first base; 109. a push rod; 110. a stress measurement probe; 111. a second seat body; 112. a first elastic metal sheet; 113. a strain gage; 114. an avoidance groove; 115. a second elastic metal sheet; 116. a top block; 117. a step surface; 118. a set screw; 119. a turntable; 120. a first screw hole; 121. a second screw hole; 122. a data line; 123. a computer; 124. a socket.
Detailed Description
The following detailed description of embodiments of the application, taken in conjunction with the accompanying drawings and examples, uses terminology in the description of the embodiments of the application in order to explain the application by way of example only and is not intended to be limiting of the application.
As shown in fig. 1, in the prior art, an overflow valve (direct acting shape) generally includes a valve body 101, a valve 102, an adjusting screw 103, a pre-tightening spring 104, an oil inlet 105, an oil outlet 106, and a movable cavity 107, where the oil inlet 105 and the oil outlet 106 are respectively communicated with the movable cavity 107, the adjusting screw 103 is in threaded connection with the valve body 101 (in a cylindrical shape), the valve 102 and the pre-tightening spring 104 are disposed in the movable cavity 107, the valve 102 covers one end of the oil inlet 105 near the movable cavity 107, the pre-tightening spring 104 is disposed between the valve 102 and the adjusting screw 103, one end of the pre-tightening spring 104 abuts against the valve 102, the other end of the pre-tightening spring 104 abuts against the adjusting screw 103, the pre-tightening spring 104 is in a compressed state, when the pressure of the oil inlet 105 is greater than the pre-tightening force of the pre-tightening spring 104 on the valve 102, the oil pushes the valve 102, and the oil pressure at this time is the opening pressure of the overflow valve, and the oil enters into the movable cavity 107, and then is discharged from the oil outlet 106.
As shown in fig. 2 to 6, in an embodiment of the present application, there is provided a valve testing device, including a first seat 108, a push rod 109, and a stress measurement probe 110, where a socket 124 into which one end of a valve body 101 with an oil inlet 105 is inserted is provided on the first seat 108, the push rod 109 is screwed with the first seat 108, one end of the push rod 109 is located inside the socket 124, the other end of the push rod 109 is located outside the socket 124, the push rod 109 is parallel to a direction in which the socket 124 faces, the stress measurement probe 110 is fixed on an end face of the end of the push rod 109 located inside the socket 124, the push rod 109 is adapted to be inserted into the oil inlet 105 of the valve body 101 located inside the socket 124 to drive the stress measurement probe 110 to push the valve 102, and the stress measurement probe 110 is adapted to measure a thrust force applied to the valve 102.
Through the above embodiment of the present embodiment, during operation, the end of the valve body 101 provided with the oil inlet 105 is inserted into the socket 124, so that the valve body 101 and the first seat 108 are kept relatively fixed, then the push rod 109 is rotated, so that the push rod 109 moves in the direction of inserting into the socket 124 (the direction to the right in fig. 6), the push rod 109 pushes the valve 102, so that the valve 102 is gradually opened, when the valve 102 is opened, the rotation of the push rod 109 is stopped, the stress measuring probe 110 detects the interaction force between the push rod 109 and the valve 102, the interaction force is used as the thrust required for opening the valve 102, and the opening pressure of the overflow valve is calculated by the formula P (opening pressure) =f (thrust)/S (cross-sectional area of the oil inlet 105). By adopting the valve testing device in the embodiment, the top pressure measurement thrust is not required to be carried out on the pre-tightening spring 104 outside the valve body 101, the opening pressure of the overflow valve after assembly can be measured quickly, larger errors caused by different working conditions in the measurement process of the pre-tightening spring 104 outside the valve body 101 are avoided, the measurement accuracy of the opening pressure of the overflow valve is improved, the plurality of overflow valves can be measured one by one, the opening pressure value of each overflow valve is ensured to be within a preset range (if the opening pressure value exceeds the preset range, the overflow valve is unqualified), oil liquid is not required to be introduced in the whole measurement process, the operation is convenient, the structure is compact, the volume is small, and the device is convenient to carry (the quality inspection personnel can carry out the sampling inspection operation on the overflow valve conveniently).
Referring to fig. 7, in some implementations of this embodiment, the stress measurement probe 110 includes a second base 111, a first elastic metal sheet 112, and a strain gauge 113, where one end of the second base 111 is fixedly connected with an end surface of the push rod 109, an avoidance groove 114 is disposed on an end surface of the other end of the second base 111, the first elastic metal sheet 112 spans a port of the avoidance groove 114, two ends of the first elastic metal sheet 112 are respectively fixedly connected with the second base 111, the strain gauge 113 is attached to a surface of the first elastic metal sheet 112, which is close to the avoidance groove 114, and the strain gauge 113 is located inside the avoidance groove 114.
Through the above embodiment of the present embodiment, when the push rod 109 rotates, it gradually extends into the oil inlet 105 to push the first elastic metal sheet 112 to press the valve 102, the first elastic metal sheet 112 bends towards the inner side of the avoidance groove 114, the strain gauge 113 deforms, the resistance value of the strain gauge 113 changes, and the thrust between the push rod 109 and the valve 102 is indirectly calculated by measuring the resistance value of the strain gauge 113.
In some implementations of this embodiment, the stress measurement probe 110 further includes a second elastic metal sheet 115, where the second elastic metal sheet 115 penetrates through the second seat 111, one end of the second elastic metal sheet 115 is located inside the avoidance groove 114, the other end of the second elastic metal sheet 115 is located outside the second seat 111, the second elastic metal sheet 115 is fixedly connected with the second seat 111, an insulation layer is disposed between the second elastic metal sheet 115 and the second seat 111 (an insulation paint is coated on an outer surface of a connection portion between the second elastic metal sheet 115 and the second seat 111), a first electrode of the strain gauge 113 is electrically connected with the second seat 111, a second electrode of the strain gauge 113 is electrically connected with one end of the second elastic metal sheet 115 located inside the avoidance groove 114, one end of the second elastic metal sheet 115 located outside the second seat 111 is adapted to be electrically connected with the push rod 101, the first body 108 is electrically connected with the first body 109, and the second body 109 are electrically connected with the first body 109, and the first body 109 are electrically connected with the first body 109.
With the above embodiment of the present embodiment, the two electrodes (the positive electrode and the negative electrode, respectively represented by the first electrode and the second electrode in the present embodiment) of the strain gauge 113 are electrically connected to the second seat 111 and the valve body 101, respectively, and the second seat 111, the push rod 109, and the first seat 108 are electrically connected to each other, so that the first seat 108 and the valve body 101 can be regarded as the positive electrode and the negative electrode of the strain gauge 113, and are connected to the first seat 108 and the valve body 101 through the data line 122, thereby realizing the acquisition of the resistance change signal of the strain gauge 113, and calculating the thrust detected by the strain gauge 113 according to the acquired change signal. Therefore, the strain gauge 113 can collect the data detected by the strain gauge 113 without excessive wiring, the measurement is convenient and quick, and the structure is more compact.
In some implementations of this embodiment, a top block 116 is fixedly connected to a center position of a surface of the second elastic metal sheet 115 away from the strain gauge 113, the top block 116 is hemispherical, a central axis of the top block 116 is perpendicular to the second elastic metal sheet 115, and the top block 116 is made of a plastic material.
Through the above embodiment of the present embodiment, the top block 116 can concentrate the thrust force at the center position of the first elastic metal sheet 112, so that the first elastic metal sheet 112 is convenient to bend and deform, the accuracy of the strain gauge 113 in detecting the thrust force is improved, and the push block is made of plastic material, so that the valve 102 and the first elastic metal sheet 112 can be prevented from being directly contacted, and thus the second seat body 111 is prevented from being contacted with the valve 102 through the first elastic metal sheet 112, so that the two electrode sections of the strain gauge 113 are caused (it should be understood that short circuit can only occur when the valve 102 is made of metal).
In some implementations of this embodiment, the socket 124 has a stepped surface 117 disposed therein, and the stepped surface 117 is adapted to abut an end surface of the valve body 101 at an end having the oil inlet 105.
In some implementations of this embodiment, the valve testing device further includes a set screw 118, where the set screw 118 is in threaded connection with the first seat 108, the set screw 118 is perpendicular to a central axis of the socket 124, the set screw 118 penetrates through a sidewall of the first seat 108, one end of the set screw 118 is located inside the socket 124, the other end of the set screw 118 is located outside the first seat 108, and one end of the set screw 118 located inside the socket 124 is adapted to be press-fitted with an outer side surface of the valve body 101.
Through the above embodiment of the present embodiment, after the set screw 118 is screwed, the set screw 118 compresses the outer side surface of the valve body 101, so that the valve body 101 is fixed inside the slot, and the valve body 101 and the first seat 108 are prevented from moving relatively when the push rod 109 pushes the valve 102.
In some implementations of this embodiment, a turntable 119 is fixedly connected to an end of the push rod 109 located outside the socket 124, and the push rod 109 is perpendicular to an end surface of the turntable 119.
By the above embodiment of the present embodiment, the diameter of the turntable 119 is greater than or equal to the diameter of the outer side surface of the first seat 108, and when the outer side surface of the turntable 119 is pinched by a hand and rotated by an arc length distance, the turntable 119 rotates by a small angle, and the push rod 109 is screwed by a small distance, so that the accuracy of the screwing control of the push rod 109 is improved.
In some implementations of the present embodiment, an insulating layer (e.g., an insulating paint or plastic film) is fixedly attached to the inner wall of the socket 124.
Through the above implementation manner of the present embodiment, the insulating layer disposed on the inner wall of the socket 124 can prevent the valve body 101 from being electrically connected with the first seat 108, so as to avoid the short circuit of the two electrodes of the strain gauge 113.
In some implementations of this embodiment, the socket 124 is cylindrical in shape, and the diameter of the inner side of the socket 124 is greater than the diameter of the outer side of the valve body 101.
With the above-described embodiment of the present embodiment, the valve body 101 is easily inserted into the socket 124, and in order to improve the relative tightness between the valve body 101 and the first seat 108, the set screw 118 may be screwed to press the valve body 101 into the socket 124.
In some implementations of this embodiment, the first seat 108 is cylindrical, the socket 124 is disposed on an end surface of one end of the first seat 108, a first screw hole 120 is disposed at an end of the first seat 108 away from the socket 124, the first screw hole 120 is disposed along an axial direction of the first seat 108, the first screw hole 120 penetrates through the first seat 108 and is in communication with the socket 124, the push rod 109 is in threaded connection with the first screw hole 120, a second screw hole 121 is disposed on an outer side surface of the first seat 108, the second screw hole 121 penetrates through the first seat 108 and is in communication with the socket 124, the second screw hole 121 is disposed along a radial direction of the first seat 108, and the set screw 118 is in threaded connection with the second screw hole 121.
As shown in fig. 6, in the valve testing device provided in this embodiment, in the working process, the first seat 108 and the valve body 101 are respectively connected with the computer 123 through the data line 122, the strain signal collected by the strain gauge 113 is transmitted to the computer 123, and the opening pressure of the overflow valve is calculated and displayed by the computer 123.
In describing embodiments of the present application, it should be noted that the descriptions with reference to the terms "the above-described embodiment," "some embodiments," "implementation," "some implementations," "possible embodiments," or "possible implementations," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
In describing embodiments of the present application, it should be noted that, unless explicitly stated and limited otherwise, the terms "coupled," "coupled," and "connected" should be construed broadly, and may be either a fixed connection, a removable connection, or an integral connection, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in embodiments of the present application will be understood in detail by those of ordinary skill in the art.
In describing embodiments of the present application, it should be noted that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Features defining "first", "second" may include one or more such features, either explicitly or implicitly. Unless otherwise indicated, the meaning of "a plurality" is two or more.
The above examples are intended to be illustrative of the application and not limiting, and those skilled in the art, after reading the present specification, may make modifications to the embodiments of the application as necessary without inventive contribution, but are protected by the patent laws within the scope of the appended claims.
Claims (7)
1. The valve testing device is characterized by comprising a first seat body (108), a push rod (109) and a stress measuring probe (110), wherein a socket (124) for inserting one end of a valve body (101) with an oil inlet (105) is arranged on the first seat body (108), the push rod (109) is in threaded connection with the first seat body (108), one end of the push rod (109) is positioned inside the socket (124), the other end of the push rod (109) is positioned outside the socket (124), the push rod (109) is parallel to the direction in which the socket (124) faces, the stress measuring probe (110) is fixed on the end face of one end of the push rod (109) positioned inside the socket (124), the push rod (109) is suitable for being inserted into the oil inlet (105) of the valve body (101) positioned inside the socket (124) to drive the stress measuring probe (110) to push the valve (102), and the stress measuring probe (110) is suitable for measuring the thrust force applied to the valve (102).
The stress measurement probe (110) comprises a second base body (111), a first elastic metal sheet (112) and a strain gauge (113), one end of the second base body (111) is fixedly connected with the end face of the push rod (109), an avoidance groove (114) is formed in the end face of the other end of the second base body (111), the first elastic metal sheet (112) spans a port of the avoidance groove (114), two ends of the first elastic metal sheet (112) are respectively fixedly connected with the second base body (111), the strain gauge (113) is attached to one face, close to the avoidance groove (114), of the first elastic metal sheet (112), and the strain gauge (113) is located inside the avoidance groove (114);
the stress measurement probe (110) further comprises a second elastic metal sheet (115), the second elastic metal sheet (115) penetrates through the second seat body (111), one end of the second elastic metal sheet (115) is located inside the avoidance groove (114), the other end of the second elastic metal sheet (115) is located outside the second seat body (111), the second elastic metal sheet (115) is fixedly connected with the second seat body (111), an insulation arrangement is arranged between the second elastic metal sheet (115) and the second seat body (111), a first electrode of the strain sheet (113) is electrically connected with the second seat body (111), a second electrode of the strain sheet (113) is electrically connected with one end of the second elastic metal sheet (115) located inside the avoidance groove (114), one end of the second elastic metal sheet (115) located outside the second seat body (111) is suitable for being electrically connected with the valve body (101), the first seat body (109) is electrically connected with the second seat body (109), and the second seat body (109) is electrically connected with the push rod (108), and the first seat body (109) is made of materials;
the center position of one face of second elastic metal sheet (115) far away from foil gage (113) is fixedly connected with kicking block (116), the shape of kicking block (116) is the hemisphere, the central axis of kicking block (116) with second elastic metal sheet (115) are perpendicular, kicking block (116) are made by the plastics material.
2. Valve testing device according to claim 1, characterized in that the socket (124) is internally provided with a step surface (117), which step surface (117) is adapted to abut against an end surface of the valve body (101) at the end provided with the oil inlet (105).
3. The valve testing device of claim 1, further comprising a set screw (118), the set screw (118) being in threaded connection with the first housing (108), the set screw (118) being perpendicular to a central axis of the socket (124), the set screw (118) extending through a sidewall of the first housing (108), one end of the set screw (118) being located inside the socket (124), the other end of the set screw (118) being located outside the first housing (108), one end of the set screw (118) being located inside the socket (124) being adapted for a press fit with an outside face of the valve body (101).
4. The valve testing device according to claim 1, wherein a turntable (119) is fixedly connected to one end of the push rod (109) located outside the socket (124), and the push rod (109) is perpendicular to an end surface of the turntable (119).
5. The valve testing apparatus of claim 1, wherein an insulating layer is fixedly attached to an inner wall of the socket (124).
6. A valve testing device according to claim 3, wherein the socket (124) is cylindrical in shape, the diameter of the inner side of the socket (124) being greater than the diameter of the outer side of the valve body (101).
7. The valve testing device according to claim 6, wherein the first seat body (108) is cylindrical in shape, the socket (124) is disposed on an end face of one end of the first seat body (108), a first screw hole (120) is disposed at one end of the first seat body (108) away from the socket (124), the first screw hole (120) is disposed along an axial direction of the first seat body (108), the first screw hole (120) penetrates through the first seat body (108) and is communicated with the socket (124), the push rod (109) is in threaded connection with the first screw hole (120), a second screw hole (121) is disposed on an outer side face of the first seat body (108), the second screw hole (121) penetrates through the first seat body (108) and is communicated with the socket (124), the second screw hole (121) is disposed along a radial direction of the first seat body (108), and the set screw (118) is in threaded connection with the second screw hole (121).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211546014.4A CN115753072B (en) | 2022-12-05 | 2022-12-05 | Valve testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211546014.4A CN115753072B (en) | 2022-12-05 | 2022-12-05 | Valve testing device |
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| Publication Number | Publication Date |
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| CN115753072A CN115753072A (en) | 2023-03-07 |
| CN115753072B true CN115753072B (en) | 2023-10-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211546014.4A Active CN115753072B (en) | 2022-12-05 | 2022-12-05 | Valve testing device |
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| CN214200624U (en) * | 2021-01-29 | 2021-09-14 | 福建天悦机械有限公司 | Valve pressure test production line |
| CN216846725U (en) * | 2022-03-15 | 2022-06-28 | 天津市北方阀门控制设备有限公司 | Tool for valve detection |
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| JP2013217433A (en) * | 2012-04-06 | 2013-10-24 | Denso Corp | Valve device, composite valve device using the same, and fuel-vapor leakage detection device using the composite valve device |
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| CN214200624U (en) * | 2021-01-29 | 2021-09-14 | 福建天悦机械有限公司 | Valve pressure test production line |
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